Data Quality Reports for Session: 104270 User: cgueymard Completed: 02/14/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020313.1SGP/THWAPS/C1 - THWAPS C1 miscalibratedsgpthwapsC1.a1, sgpthwapsC1.b1
D020426.6SGP/TSI/C1 - sampling rate changesgptsiskycoverC1.a1, sgptsiskycoverC1.b1
D020821.2SGP/MFRSR/C1 - out-of-band filter leakagesgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
D030130.3SGP/TSI/C1 - Metadata Errors in NetCDF HeadersgptsiskycoverC1.a1, sgptsiskycoverC1.b1
D030312.10SGP/MWR/C1 - Intermittent Negative Sky Brightness TemperaturessgpmwrlosC1.a1, sgpmwrlosC1.b1, sgp1mwravgC1.c1, sgp5mwravgC1.c1
D030531.1SGP/MFRSR/C1 - Shadowband MisalignmentsgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
D030811.1SGP/MFRSR/C1 - Broadband and 500nm data suspectsgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
D030907.1SGP/MFRSR/C1 - Shadowband MisalignmentsgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
D030917.16SGP/SIRS/C1 - Missing data due to Ice storm and clock problemssgpsirsC1.00, sgpsirsC1.a2, sgpsirsC1.b1, sgpsirs20sC1.a0, sgpsirs60sC1.a1,
sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
D030917.21SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problemssgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1,
sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1,
sgpthwapsC1.b1
D030917.6SGP/BRS/C1 - Missing data due to Ice storm and clock problemssgpbrsC1.00, sgpbrsC1.a2, sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgp1swfanalbrs1longC1.c1,
sgp15swfanalbrs1longC1.c1
D031218.1SGP/TSI/C1 - Shadowband misalignedsgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.a1, sgptsiskycoverC1.b1,
sgptsiskyimageC1.a1
D040526.1SGP/TSI/C1 - Metadata errorssgptsiskycoverC1.a1, sgptsiskycoverC1.b1
D041116.2SGP/TSI/C1 - Shadowband MisalignmentsgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
D050321.2SGP/TSI/C1 - Instrument failuresgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
D050322.1SGP/BRS/C1 - low downwelling shortwave readingssgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0
D050502.2SGP/SIRS/C1 - SWFANAL Data description errorsgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
D050502.3SGP/BRS/C1 - SWFANAL Data description error sgp1swfanalbrs1longC1.c1, sgp15swfanalbrs1longC1.c1
D050722.1SGP/MWR/C1 - REPROCESS - Revised Retrieval CoefficientssgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgp1mwravgC1.c1, sgp5mwravgC1.c1,
sgpqmemwrcolC1.c1
D050812.12SGP/THWAPS/C1 - Minor bias in saturation vapor pressuresgpthwapsC1.b1
D050928.8SGP/TSI/C1 - Heater problemsgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
D060630.7SGP/BRS/C1 - Reprocessed: Longwave Calibration errorsgpbrsC1.b1
D060630.8SGP/SIRS/C1 - Reprocessed: Longwave Calibration errorsgpsirsC1.b1
D061102.1SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurementsgpbrsC1.b1, sgpbrs20sC1.a0


DQRID : D020313.1
Start DateStart TimeEnd DateEnd Time
03/09/2002034004/23/20021418
Subject:
SGP/THWAPS/C1 - THWAPS C1 miscalibrated
DataStreams:sgpthwapsC1.a1, sgpthwapsC1.b1
Description:
Power outages apparently led to the THWAPS HMP233 temperature and RH sensor
being replaced at C1.  The power went out at 0340 on 3/9 was restored at
0635 and went out again at 2025.

The new HMP233 appears to be incorrectly calibrated and all temperature
data since its installation are wrong.  If I am correct about the nature
of the calibration problem, the true average temperature can be recovered
from that recorded by a linear conversion, but I don't think its worth the
trouble.
Measurements:sgpthwapsC1.a1:
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Environmental Temperature (hybrid-b grid)(temp)
  • Relative humidity scaled, by total column amount from MWR(rh)
sgpthwapsC1.b1:
  • Environmental Temperature (hybrid-b grid)(temp)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D020426.6
Start DateStart TimeEnd DateEnd Time
07/02/2000003504/26/20020018
Subject:
SGP/TSI/C1 - sampling rate change
DataStreams:sgptsiskycoverC1.a1, sgptsiskycoverC1.b1
Description:
SGP TSI-880 sampling rate changed from 20-second to
30-second at 20020426.001900 UTC (20020425.1819 SGP
CF local time) per ECR-00226 and BCR-00491.

This change brings all ARM TSIs to the same operational
sampling rate.  Daily SGP TSI data volume will decrease
by about 1/3 due to this change.
Measurements:sgptsiskycoverC1.b1:
  • Time offset of tweaks from base_time(time_offset)
  • Pixel count: number total in sun circle(region.sun.count)
  • east longitude for all the input platforms.(lon)
  • Pixel count: number total indeterminant(count.unknown)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • altitude above sea levelaltunits(alt)
  • Time offset from base_time(base_time)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total in processed circle(count.sky)
  • Sunshine meter(sunny)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • north latitude for all the input platforms.(lat)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total thin(count.thin)
  • Solar azimuth angle(solar.azimuth)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
sgptsiskycoverC1.a1:
  • Pixel count: number total thin(count.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Solar azimuth angle(solar.azimuth)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number below horizon in image(count.sub.horz)
  • north latitude for all the input platforms.(lat)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in sun circle(region.sun.count)
  • Percentage thin cloud(percent.thin)
  • Sunshine meter(sunny)
  • Time offset from base_time(base_time)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Time offset of tweaks from base_time(time_offset)
  • Sun altitude above horizon(solar.altitude)
  • altitude above sea levelaltunits(alt)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • east longitude for all the input platforms.(lon)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: camera and sun strip mask(count.mask)

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DQRID : D020821.2
Start DateStart TimeEnd DateEnd Time
09/19/2001000010/28/20022359
Subject:
SGP/MFRSR/C1 - out-of-band filter leakage
DataStreams:sgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
Description:
Testing of the batch of centrovision filters being used in the MFRSR C1 instrument 
indicate that the first four filters leak 'out of band' light. The leakage for each filter is 
(1)415nm 3%, (2)500nm 1-2%, (3)615nm 1-2%, (4)673nm 3%. Acceptable leakage is less than 0.5%.

This leakage causes an error in the irradiance values (too high) at these four wavelengths 
and the optical depths calculated using this data will be too high.
Measurements:sgpmfrsrC1.a0:
  • Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
  • Narrowband Hemispheric Irradiance, Filter 1, offset and cosine corrected(hemisp_narrowband_filter1)
  • Narrowband Hemispheric Irradiance, Filter 4, offset and cosine corrected(hemisp_narrowband_filter4)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
  • Narrowband Hemispheric Irradiance, Filter 3, offset and cosine corrected(hemisp_narrowband_filter3)
  • Narrowband Hemispheric Irradiance, Filter 2, offset and cosine corrected(hemisp_narrowband_filter2)
sgpmfrsrod1barnmichC1.c1:
  • Rayleigh optical thickness computed for filter 3(Rayleigh_optical_thickness_filter3)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter2)
  • Rayleigh optical thickness computed for filter 1(Rayleigh_optical_thickness_filter1)
  • Rayleigh optical thickness computed for filter 4(Rayleigh_optical_thickness_filter4)
  • aerosol optical depth filter 2(aerosol_optical_depth_filter2)
  • Ozone absorption coefficient used for filter 4(Ozone_absorption_coefficient_filter4)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter1)
  • totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
  • Ozone absorption coefficient used for filter 2(Ozone_absorption_coefficient_filter2)
  • Ozone absorption coefficient used for filter 1(Ozone_absorption_coefficient_filter1)
  • total optical depth direct narrowband filter 1(total_optical_depth_filter1)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter4)
  • total optical depth direct narrowband filter 3(total_optical_depth_filter3)
  • aerosol optical depth filter 1(aerosol_optical_depth_filter1)
  • Ozone absorption coefficient used for filter 3(Ozone_absorption_coefficient_filter3)
  • total optical depth direct narrowband filter 4(total_optical_depth_filter4)
  • Rayleigh optical thickness computed for filter 2(Rayleigh_optical_thickness_filter2)
  • aerosol optical depth filter 3(aerosol_optical_depth_filter3)
  • aerosol optical depth filter 4(aerosol_optical_depth_filter4)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter3)
sgpmfrsrC1.b1:
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
  • Narrowband Hemispheric Irradiance, Filter 3, offset and cosine corrected(hemisp_narrowband_filter3)
  • Narrowband Hemispheric Irradiance, Filter 2, offset and cosine corrected(hemisp_narrowband_filter2)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
  • Narrowband Hemispheric Irradiance, Filter 1, offset and cosine corrected(hemisp_narrowband_filter1)
  • Narrowband Hemispheric Irradiance, Filter 4, offset and cosine corrected(hemisp_narrowband_filter4)
sgpmfrsrlangplotC1.c1:
  • rejected points for the final fit for the Direct Narrowband Filter4(michalsky_rejected_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter3(michalsky_rejected_filter3)
  • log(irradiance) for the Direct Narrowband Filter4(michalsky_lnI_filter4)
  • log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter1(michalsky_rejected_filter1)
  • log(irradiance) for the Direct Narrowband Filter1(barnard_lnI_filter1)
  • log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
  • rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
  • log(irradiance) for the Direct Narrowband Filter3(barnard_lnI_filter3)
  • rejected points for the final fit for the Direct Narrowband Filter3(barnard_rejected_filter3)
  • rejected points for the final fit for the Direct Narrowband Filter4(barnard_rejected_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter1(barnard_rejected_filter1)
  • log(irradiance) for the Direct Narrowband Filter2(michalsky_lnI_filter2)
  • log(irradiance) for the Direct Narrowband Filter3(michalsky_lnI_filter3)
  • log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
  • rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
sgpmfrsrlangleyC1.c1:
  • optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter3(barnard_error_slope_filter3)
  • optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter4(barnard_error_slope_filter4)
  • solar constant corrected for solar distance for the Direct Narrowband Filter2(barnard_solar_constant_sdist_filter2)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter1(michalsky_good_fraction_filter1)
  • solar constant corrected for solar distance for the Direct Narrowband Filter3(barnard_solar_constant_sdist_filter3)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter1(barnard_error_slope_filter1)
  • rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter2(barnard_error_slope_filter2)
  • solar constant corrected for solar distance for the Direct Narrowband Filter4(michalsky_solar_constant_sdist_filter4)
  • solar constant corrected for solar distance for the Direct Narrowband Filter4(barnard_solar_constant_sdist_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(barnard_good_fraction_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
  • error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
  • error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
  • error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter1(barnard_good_fraction_filter1)
  • number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
  • solar constant corrected for solar distance for the Direct Narrowband Filter1(michalsky_solar_constant_sdist_filter1)
  • number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
  • solar constant for the Direct Narrowband Filter2(michalsky_solar_constant_filter2)
  • standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
  • optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
  • solar constant for the Direct Narrowband Filter4(michalsky_solar_constant_filter4)
  • optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
  • solar constant corrected for solar distance for the Direct Narrowband Filter1(barnard_solar_constant_sdist_filter1)
  • optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
  • standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
  • rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter3(barnard_good_fraction_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter4(barnard_good_fraction_filter4)
  • optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter3(michalsky_good_fraction_filter3)
  • solar constant for the Direct Narrowband Filter3(michalsky_solar_constant_filter3)
  • number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
  • rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
  • rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
  • rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
  • error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
  • number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
  • rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
  • rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(michalsky_good_fraction_filter2)
  • standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
  • solar constant corrected for solar distance for the Direct Narrowband Filter3(michalsky_solar_constant_sdist_filter3)
  • optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
  • standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
  • optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
  • rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter4(michalsky_good_fraction_filter4)
  • solar constant for the Direct Narrowband Filter1(michalsky_solar_constant_filter1)
  • number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
  • solar constant corrected for solar distance for the Direct Narrowband Filter2(michalsky_solar_constant_sdist_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)

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DQRID : D030130.3
Start DateStart TimeEnd DateEnd Time
07/02/2000003501/21/20032359
Subject:
SGP/TSI/C1 - Metadata Errors in NetCDF Header
DataStreams:sgptsiskycoverC1.a1, sgptsiskycoverC1.b1
Description:
The value of "sample_int" reported in the netCDF header is
incorrect.  The correct sampling interval is 30 seconds.

The maximum values for the variable "sunny" is incorrect.  
It should be 1, not 100 as documented in the netCDF header. 
Users should disregard the "qc_sunny" flag during this
period of time and apply their own qc check if desired.

The minimum value for the variable "solar.altitude" is
incorrect. It should be -90, not 10 as documented in the
netCDF header.  Users should disregard the "qc_solar.altitude"
flag during this period of time and apply their own qc check
if desired.
Measurements:sgptsiskycoverC1.b1:
  • Time offset of tweaks from base_time(time_offset)
  • Sunshine meter(sunny)
  • Sun altitude above horizon(solar.altitude)
sgptsiskycoverC1.a1:
  • Time offset of tweaks from base_time(time_offset)

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DQRID : D030312.10
Start DateStart TimeEnd DateEnd Time
11/17/1999180007/31/20022034
Subject:
SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgp1mwravgC1.c1, sgp5mwravgC1.c1
Description:
Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999.  These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).

Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system.  Despite several attempts to isolate
and correct it, the problem persisted.

It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program.
Measurements:sgp5mwravgC1.c1:
  • Mean total liquid water amount along LOS path(liq)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Mean total water vapor amount along LOS path(vap)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
sgpmwrlosC1.b1:
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Mean total liquid water amount along LOS path(liq)
  • Mean total water vapor amount along LOS path(vap)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
sgp1mwravgC1.c1:
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Mean total liquid water amount along LOS path(liq)
  • Mean total water vapor amount along LOS path(vap)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
sgpmwrlosC1.a1:
  • Mean total water vapor amount along LOS path(vap)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Mean total liquid water amount along LOS path(liq)

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DQRID : D030531.1
Start DateStart TimeEnd DateEnd Time
05/29/2003153006/02/20031628
Subject:
SGP/MFRSR/C1 - Shadowband Misalignment
DataStreams:sgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
Description:
During the time period specified, the shadowband was misaligned.  Portions of the data 
have acceptable shading and can be used by experienced data users applying appropriate 
screening.
Measurements:sgpmfrsrC1.a0:
  • Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
  • Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
    broadband scale applied(diffuse_hemisp_broadband)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 6, offset and cosine corrected(diffuse_hemisp_narrowband_filter6)
sgpmfrsrod1barnmichC1.c1:
  • Indicator of optical depth stability(optical_depth_stability_flag)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter2)
  • aerosol optical depth filter 2(aerosol_optical_depth_filter2)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter1)
  • totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
  • angstrom exponent(angstrom_exponent)
  • total optical depth direct narrowband filter 1(total_optical_depth_filter1)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter4)
  • total optical depth direct narrowband filter 3(total_optical_depth_filter3)
  • aerosol optical depth filter 1(aerosol_optical_depth_filter1)
  • total optical depth direct narrowband filter 4(total_optical_depth_filter4)
  • aerosol optical depth filter 3(aerosol_optical_depth_filter3)
  • aerosol optical depth filter 4(aerosol_optical_depth_filter4)
  • total optical depth direct narrowband filter 5(total_optical_depth_filter5)
  • aerosol optical depth filter 5(aerosol_optical_depth_filter5)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter3)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter5)
sgpmfrsrC1.b1:
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 6, offset and cosine corrected(diffuse_hemisp_narrowband_filter6)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
  • Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
    broadband scale applied(diffuse_hemisp_broadband)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
sgpmfrsrlangplotC1.c1:
  • log(irradiance) for the Direct Narrowband Filter6(michalsky_lnI_filter6)
  • rejected points for the final fit for the Direct Narrowband Filter4(michalsky_rejected_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter3(michalsky_rejected_filter3)
  • rejected points for the final fit for the Direct Broadband(barnard_rejected_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter5(michalsky_rejected_filter5)
  • log(irradiance) for the Direct Narrowband Filter4(michalsky_lnI_filter4)
  • log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter1(michalsky_rejected_filter1)
  • log(irradiance) for the Direct Narrowband Filter1(barnard_lnI_filter1)
  • rejected points for the final fit for the Direct Narrowband Filter6(michalsky_rejected_filter6)
  • log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
  • rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
  • log(irradiance) for the Direct Narrowband Filter3(barnard_lnI_filter3)
  • rejected points for the final fit for the Direct Narrowband Filter3(barnard_rejected_filter3)
  • rejected points for the final fit for the Direct Narrowband Filter4(barnard_rejected_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter1(barnard_rejected_filter1)
  • log(irradiance) for the Direct Narrowband Filter6(barnard_lnI_filter6)
  • log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
  • log(irradiance) for the Direct Narrowband Filter2(michalsky_lnI_filter2)
  • log(irradiance) for the Direct Narrowband Filter5(barnard_lnI_filter5)
  • rejected points for the final fit for the Direct Narrowband Filter5(barnard_rejected_filter5)
  • log(irradiance) for the Direct Narrowband Filter3(michalsky_lnI_filter3)
  • log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter6(barnard_rejected_filter6)
  • log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
  • rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
  • log(irradiance) for the Direct Narrowband Filter5(michalsky_lnI_filter5)
sgpmfrsrlangleyC1.c1:
  • optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
  • number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter3(barnard_error_slope_filter3)
  • number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
  • optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
  • Angstrom exponent(barnard_angstrom_exponent)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter4(barnard_error_slope_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter1(michalsky_good_fraction_filter1)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter1(barnard_error_slope_filter1)
  • optical depth for the Direct Narrowband Filter6(barnard_optical_depth_filter6)
  • standard deviation around regression line for the Direct Narrowband Filter6(michalsky_standard_deviation_filter6)
  • rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter6(michalsky_number_points_filter6)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter2(barnard_error_slope_filter2)
  • optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
  • standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(barnard_good_fraction_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
  • optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
  • error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
  • error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
  • error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter1(barnard_good_fraction_filter1)
  • number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
  • error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
  • number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter6(michalsky_good_fraction_filter6)
  • standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
  • optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
  • error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
  • optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
  • rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
  • optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
  • optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
  • rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
  • number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)
  • standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
  • rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
  • rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
  • rejection flag for Direct Broadband(barnard_badflag_broadband)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter3(barnard_good_fraction_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter4(barnard_good_fraction_filter4)
  • optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter3(michalsky_good_fraction_filter3)
  • number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
  • rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
  • rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
  • rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
  • error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
  • number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
  • rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
  • rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
  • optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(michalsky_good_fraction_filter2)
  • rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
  • number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
  • standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
  • standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
  • error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter6(barnard_good_fraction_filter6)
  • optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
  • optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
  • standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
  • number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
  • error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter5(barnard_good_fraction_filter5)
  • optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter6(barnard_error_slope_filter6)
  • rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter4(michalsky_good_fraction_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter5(michalsky_good_fraction_filter5)
  • percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
  • Angstrom exponent(michalsky_angstrom_exponent)
  • number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter5(barnard_error_slope_filter5)
  • percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
  • number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)
  • rejection flag for Direct Broadband(michalsky_badflag_broadband)

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DQRID : D030811.1
Start DateStart TimeEnd DateEnd Time
03/06/2003000005/01/20032359
Subject:
SGP/MFRSR/C1 - Broadband and 500nm data suspect
DataStreams:sgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
Description:
During this time period the broadband and 500nm channels intermittently reported 
erroneously high values due to a problem with the instruments loggerboard. The other channels were 
unaffected. This problem is sometimes evident as a sudden "step" shift in the values.
Measurements:sgpmfrsrC1.a0:
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
    broadband scale applied(diffuse_hemisp_broadband)
  • Hemispheric Broadband Irradiance, offset and cosine corrected, broadband scale
    factor applied(hemisp_broadband)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Hemispheric Irradiance, Filter 2, offset and cosine corrected(hemisp_narrowband_filter2)
sgpmfrsrod1barnmichC1.c1:
  • Ozone absorption coefficient used for filter 2(Ozone_absorption_coefficient_filter2)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter2)
  • aerosol optical depth filter 2(aerosol_optical_depth_filter2)
  • totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
  • Rayleigh optical thickness computed for filter 2(Rayleigh_optical_thickness_filter2)
sgpmfrsrC1.b1:
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Hemispheric Broadband Irradiance, offset and cosine corrected, broadband scale
    factor applied(hemisp_broadband)
  • Narrowband Hemispheric Irradiance, Filter 2, offset and cosine corrected(hemisp_narrowband_filter2)
  • Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
    broadband scale applied(diffuse_hemisp_broadband)
sgpmfrsrlangplotC1.c1:
  • log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
  • log(irradiance) for the Direct Narrowband Filter2(michalsky_lnI_filter2)
  • rejected points for the final fit for the Direct Broadband(barnard_rejected_broadband)
  • log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)
  • rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
  • log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
  • rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
sgpmfrsrlangleyC1.c1:
  • number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
  • optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
  • rejection flag for Direct Broadband(barnard_badflag_broadband)
  • solar constant corrected for solar distance for the Direct Narrowband Filter2(barnard_solar_constant_sdist_filter2)
  • solar constant for the Direct BroadBand(michalsky_solar_constant_broadband)
  • rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter2(barnard_error_slope_filter2)
  • rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
  • optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(barnard_good_fraction_filter2)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(michalsky_good_fraction_filter2)
  • standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
  • error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
  • solar constant corrected for solar distance for the Direct BroadBand(barnard_solar_constant_sdist_broadband)
  • optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
  • optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
  • standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
  • error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
  • number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
  • number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
  • number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
  • solar constant for the Direct Narrowband Filter2(michalsky_solar_constant_filter2)
  • error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
  • percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
  • solar constant corrected for solar distance for the Direct Broadband(michalsky_solar_constant_sdist_broadband)
  • solar constant corrected for solar distance for the Direct Narrowband Filter2(michalsky_solar_constant_sdist_filter2)
  • percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
  • rejection flag for Direct Broadband(michalsky_badflag_broadband)

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DQRID : D030907.1
Start DateStart TimeEnd DateEnd Time
09/05/2003190009/09/20031959
Subject:
SGP/MFRSR/C1 - Shadowband Misalignment
DataStreams:sgpmfrsrC1.a0, sgpmfrsrC1.b1, sgpmfrsrlangleyC1.c1, sgpmfrsrlangplotC1.c1,
sgpmfrsrod1barnmichC1.c1
Description:
During the time period specified, the shadowband was misaligned.  Portions of the data 
have acceptable shading and can be used by experienced data users applying appropriate 
screening.
Measurements:sgpmfrsrC1.a0:
  • Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
  • Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
    broadband scale applied(diffuse_hemisp_broadband)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 6, offset and cosine corrected(diffuse_hemisp_narrowband_filter6)
sgpmfrsrod1barnmichC1.c1:
  • Indicator of optical depth stability(optical_depth_stability_flag)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter2)
  • aerosol optical depth filter 2(aerosol_optical_depth_filter2)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter1)
  • totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
  • angstrom exponent(angstrom_exponent)
  • total optical depth direct narrowband filter 1(total_optical_depth_filter1)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter4)
  • total optical depth direct narrowband filter 3(total_optical_depth_filter3)
  • aerosol optical depth filter 1(aerosol_optical_depth_filter1)
  • total optical depth direct narrowband filter 4(total_optical_depth_filter4)
  • aerosol optical depth filter 3(aerosol_optical_depth_filter3)
  • aerosol optical depth filter 4(aerosol_optical_depth_filter4)
  • total optical depth direct narrowband filter 5(total_optical_depth_filter5)
  • aerosol optical depth filter 5(aerosol_optical_depth_filter5)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter3)
  • extraterrestrial spectral irradiance used for optical depth calculations,
    corrected for eccentricity of earth\'s orbit(io_filter5)
sgpmfrsrC1.b1:
  • Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
  • Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
  • Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
  • Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 6, offset and cosine corrected(diffuse_hemisp_narrowband_filter6)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
  • Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
    broadband scale applied(diffuse_hemisp_broadband)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
  • Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
  • Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
  • Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
sgpmfrsrlangplotC1.c1:
  • log(irradiance) for the Direct Narrowband Filter6(michalsky_lnI_filter6)
  • rejected points for the final fit for the Direct Narrowband Filter4(michalsky_rejected_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter3(michalsky_rejected_filter3)
  • rejected points for the final fit for the Direct Broadband(barnard_rejected_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter5(michalsky_rejected_filter5)
  • log(irradiance) for the Direct Narrowband Filter4(michalsky_lnI_filter4)
  • log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter1(michalsky_rejected_filter1)
  • log(irradiance) for the Direct Narrowband Filter1(barnard_lnI_filter1)
  • rejected points for the final fit for the Direct Narrowband Filter6(michalsky_rejected_filter6)
  • log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
  • rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
  • log(irradiance) for the Direct Narrowband Filter3(barnard_lnI_filter3)
  • rejected points for the final fit for the Direct Narrowband Filter3(barnard_rejected_filter3)
  • rejected points for the final fit for the Direct Narrowband Filter4(barnard_rejected_filter4)
  • rejected points for the final fit for the Direct Narrowband Filter1(barnard_rejected_filter1)
  • log(irradiance) for the Direct Narrowband Filter6(barnard_lnI_filter6)
  • log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
  • log(irradiance) for the Direct Narrowband Filter2(michalsky_lnI_filter2)
  • log(irradiance) for the Direct Narrowband Filter5(barnard_lnI_filter5)
  • rejected points for the final fit for the Direct Narrowband Filter5(barnard_rejected_filter5)
  • log(irradiance) for the Direct Narrowband Filter3(michalsky_lnI_filter3)
  • log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter6(barnard_rejected_filter6)
  • log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
  • rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
  • rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
  • log(irradiance) for the Direct Narrowband Filter5(michalsky_lnI_filter5)
sgpmfrsrlangleyC1.c1:
  • optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
  • number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter3(barnard_error_slope_filter3)
  • number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
  • optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
  • Angstrom exponent(barnard_angstrom_exponent)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter4(barnard_error_slope_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter1(michalsky_good_fraction_filter1)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter1(barnard_error_slope_filter1)
  • optical depth for the Direct Narrowband Filter6(barnard_optical_depth_filter6)
  • standard deviation around regression line for the Direct Narrowband Filter6(michalsky_standard_deviation_filter6)
  • rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter6(michalsky_number_points_filter6)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter2(barnard_error_slope_filter2)
  • optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
  • standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(barnard_good_fraction_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
  • optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
  • error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
  • error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
  • error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter1(barnard_good_fraction_filter1)
  • number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
  • error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
  • number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter6(michalsky_good_fraction_filter6)
  • standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
  • optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
  • error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
  • optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
  • rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
  • optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
  • optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
  • rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
  • number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)
  • standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
  • rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
  • rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
  • rejection flag for Direct Broadband(barnard_badflag_broadband)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter3(barnard_good_fraction_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter4(barnard_good_fraction_filter4)
  • optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter3(michalsky_good_fraction_filter3)
  • number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
  • rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
  • rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
  • rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
  • error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
  • number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
  • rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
  • rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
  • optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter2(michalsky_good_fraction_filter2)
  • rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
  • number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
  • standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
  • standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
  • error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter6(barnard_good_fraction_filter6)
  • optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
  • optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
  • standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
  • number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
  • number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
  • error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter5(barnard_good_fraction_filter5)
  • optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter6(barnard_error_slope_filter6)
  • rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter4(michalsky_good_fraction_filter4)
  • percentage of initial points used in final linear fit for the Direct Narrowband
    Filter5(michalsky_good_fraction_filter5)
  • percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
  • Angstrom exponent(michalsky_angstrom_exponent)
  • number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
  • error in optical depth (slope) of final linear fit for the Direct Narrowband
    Filter5(barnard_error_slope_filter5)
  • percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
  • number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)
  • rejection flag for Direct Broadband(michalsky_badflag_broadband)

Back To Table of Contents

DQRID : D030917.16
Start DateStart TimeEnd DateEnd Time
03/09/2002210103/10/20022125
03/13/2002180103/14/20021602
Subject:
SGP/SIRS/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgpsirsC1.00, sgpsirsC1.a2, sgpsirsC1.b1, sgpsirs20sC1.a0, sgpsirs60sC1.a1,
sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgp1swfanalsirs1longC1.c1:
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Clear-sky Fit Coefficient a to Albedo (Alba)(coef_clearsky_albedo_a)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Site Identification(site)
  • Clear-sky Fit Coefficient b to Global UVB Irradiance (UVBb)(coef_clearsky_guvb_b)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Clear-sky Fit Coefficient b to Albedo (Albb)(coef_clearsky_albedo_b)
  • Clear-sky Detection Flag (clrf)(flag_clearsky_detection)
  • Clear-sky Fit Coefficient b to Global Shortwave Irradiance (CSWb)(coef_clearsky_gsw_b)
  • Daily Averaged Distance from the Earth to the Sun (auavg)(sun_earth_distance_dailyaverage)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Clear-sky Fit Coefficient b to Summed Shortwave Irradiance (CSWb)(coef_clearsky_ssw_b)
  • Time Offset from base_time_LST(time_offset_LST)
  • Clear-sky Fit Coefficient a to Summed Shortwave Irradiance (CSWa)(coef_clearsky_ssw_a)
  • east longitude for all the input platforms.(lon)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Clear-sky Fit Coefficient a to Global Shortwave Irradiance (CSWa)(coef_clearsky_gsw_a)
  • Clear-sky Fit Coefficient b to Diffuse Irradiance to Total Irradiance Ratio
    (DFRb)(coef_clearsky_difratio_b)
  • Time offset of tweaks from base_time(time_offset)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • altitude above sea levelaltunits(alt)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Date (YYMMDD LST) for which the Coefficients are Applicable(coef_date)
  • Clear-sky Fit Coefficient a to Global UVB Irradiance (UVBa)(coef_clearsky_guvb_a)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Clear-sky Fit Coefficient b to Global minus Summed Shortwave Irradiance
    Difference (SCORb)(coef_clearsky_dsw_b)
  • Clear-sky Offset Coefficient c for Global minus Summed Shortwave Irradiance
    Difference (SCORc)(coef_clearsky_dsw_c)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Beginning Time of File (LST)(base_time_LST)
  • north latitude for all the input platforms.(lat)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Time offset from base_time(base_time)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • Clear-sky Fit Coefficient a to Diffuse Irradiance to Total Irradiance Ratio
    (DFRa)(coef_clearsky_difratio_a)
  • Clear-sky Fit Coefficient a to Global minus Summed Shortwave Irradiance
    Difference (SCORa)(coef_clearsky_dsw_a)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
sgpsirsC1.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • altitude above sea levelaltunits(alt)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Time offset from base_time(base_time)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • east longitude for all the input platforms.(lon)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • north latitude for all the input platforms.(lat)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Battery voltage(vBatt)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Time offset of tweaks from base_time(time_offset)
sgpsirsC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpsirs60sC1.a1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Time offset from base_time(base_time)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • east longitude for all the input platforms.(lon)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • north latitude for all the input platforms.(lat)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • altitude above sea levelaltunits(alt)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Time offset of tweaks from base_time(time_offset)
  • Battery voltage(vBatt)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
sgp15swfanalsirs1longC1.c1:
  • Beginning Time of File (LST)(base_time_LST)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Average over the interval of the standard deviation of difratiodn_measured
    computed using a 3-5 sample window centered at each 1-min sample(difratiodn_measured_stdev)
  • east longitude for all the input platforms.(lon)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • Time offset of tweaks from base_time(time_offset)
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Number of 1-minute Measured Downwelling Summed Shortwave Irradiances in the
    15-minute Interval (Nssw)(nsamples_sswfluxdn_measured)
  • Estimated Average Fractional Sky Cover over the Hemispheric Dome (cf)(cloudfraction)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • north latitude for all the input platforms.(lat)
  • Ratio of Measured minus Clear-sky Fit Estimated Downwelling Diffuse Shortwave
    Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance
    (di(difcloudeffect_normalized)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • Time offset from base_time(base_time)
  • Time Offset from base_time_LST(time_offset_LST)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Number of 1-minute Clear-sky Fit Downwelling Global Shortwave Irradiance
    Estimates in the 15-minute Interval (Ncsw)(nsamples_gswfluxdn_clearskyfit)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Site Identification(site)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • Number of 1-minute Clear-sky Detections in the 15-minute Interval (Nclr)(nsamples_clearsky_detection)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Number of 1-minute Cloud Fraction Estimates in the 15-minute Interval (Ncf)(nsamples_cloudfraction)
  • altitude above sea levelaltunits(alt)
sgpsirs20sC1.a0:
  • north latitude for all the input platforms.(lat)
  • Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile
    Voltage(inst_up_short_hemisp)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Time offset from base_time(base_time)
  • altitude above sea levelaltunits(alt)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpsirsC1.a2:
  • Time offset from base_time(base_time)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • altitude above sea levelaltunits(alt)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Battery voltage(vBatt)
  • north latitude for all the input platforms.(lat)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)

Back To Table of Contents

DQRID : D030917.21
Start DateStart TimeEnd DateEnd Time
03/09/2002205503/11/20022005
03/13/2002175503/14/20021505
Subject:
SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1,
sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1,
sgpthwapsC1.b1
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgpthwapsC1.a1:
  • Standard deviation of Relative Humidity(sd_rh)
  • Unit Vector Wind Direction(wdir)
  • north latitude for all the input platforms.(lat)
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Time offset of tweaks from base_time(time_offset)
  • surface wind speed(wspd)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Environmental Temperature (hybrid-b grid)(temp)
  • Standard Deviation of Air Temperature(sd_temp)
  • Time offset from base_time(base_time)
  • Standard Deviation of Wind Direction(sd_wdir)
  • east longitude for all the input platforms.(lon)
  • Standard Deviation of Pressure(sd_pres)
  • pressure at constant pressure surface(pres)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • altitude above sea levelaltunits(alt)
sgpthwapsB1.b1:
  • pressure at constant pressure surface(pres)
  • north latitude for all the input platforms.(lat)
  • Standard deviation of Relative Humidity(sd_rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • Unit Vector Wind Direction(wdir)
  • Environmental Temperature (hybrid-b grid)(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Pressure(sd_pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • surface wind speed(wspd)
  • Standard Deviation of Wind Direction(sd_wdir)
  • east longitude for all the input platforms.(lon)
  • Time offset from base_time(base_time)
  • altitude above sea levelaltunits(alt)
  • Standard deviation of Vapor Pressure(sd_vap_pres)
sgpthwapsB5.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpthwapsB6.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpthwapsB6.a1:
  • east longitude for all the input platforms.(lon)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • Standard deviation of Relative Humidity(sd_rh)
  • Standard Deviation of Wind Direction(sd_wdir)
  • surface wind speed(wspd)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Time offset of tweaks from base_time(time_offset)
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • north latitude for all the input platforms.(lat)
  • pressure at constant pressure surface(pres)
  • Unit Vector Wind Direction(wdir)
  • Time offset from base_time(base_time)
  • altitude above sea levelaltunits(alt)
  • Environmental Temperature (hybrid-b grid)(temp)
  • Standard Deviation of Pressure(sd_pres)
  • Standard Deviation of Air Temperature(sd_temp)
sgpthwapsB5.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • east longitude for all the input platforms.(lon)
  • surface wind speed(wspd)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • pressure at constant pressure surface(pres)
  • north latitude for all the input platforms.(lat)
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Standard Deviation of Pressure(sd_pres)
  • Unit Vector Wind Direction(wdir)
  • Standard deviation of Relative Humidity(sd_rh)
  • Environmental Temperature (hybrid-b grid)(temp)
  • altitude above sea levelaltunits(alt)
sgpthwapsC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpthwapsB1.a1:
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • Environmental Temperature (hybrid-b grid)(temp)
  • surface wind speed(wspd)
  • Standard Deviation of Pressure(sd_pres)
  • Standard deviation of Relative Humidity(sd_rh)
  • Time offset from base_time(base_time)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Standard Deviation of Air Temperature(sd_temp)
  • pressure at constant pressure surface(pres)
  • altitude above sea levelaltunits(alt)
  • Unit Vector Wind Direction(wdir)
sgpthwapsC1.b1:
  • east longitude for all the input platforms.(lon)
  • pressure at constant pressure surface(pres)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • Environmental Temperature (hybrid-b grid)(temp)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Unit Vector Wind Direction(wdir)
  • Time offset from base_time(base_time)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Standard deviation of Relative Humidity(sd_rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Standard Deviation of Pressure(sd_pres)
  • surface wind speed(wspd)
sgpthwapsB1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpthwapsB6.b1:
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • north latitude for all the input platforms.(lat)
  • Standard Deviation of Pressure(sd_pres)
  • Standard Deviation of Air Temperature(sd_temp)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Environmental Temperature (hybrid-b grid)(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Unit Vector Wind Direction(wdir)
  • pressure at constant pressure surface(pres)
  • altitude above sea levelaltunits(alt)
  • Time offset from base_time(base_time)
  • surface wind speed(wspd)
  • Standard deviation of Relative Humidity(sd_rh)
  • east longitude for all the input platforms.(lon)
sgpthwapsB5.a1:
  • Unit Vector Wind Direction(wdir)
  • Standard deviation of Vapor Pressure(sd_vap_pres)
  • Time offset from base_time(base_time)
  • Standard deviation of Relative Humidity(sd_rh)
  • Battery Voltage (of 60m battery) for QA/QC purposes(vbat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Pressure(sd_pres)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Standard Deviation of Wind Direction(sd_wdir)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • surface wind speed(wspd)
  • pressure at constant pressure surface(pres)
  • Environmental Temperature (hybrid-b grid)(temp)

Back To Table of Contents

DQRID : D030917.6
Start DateStart TimeEnd DateEnd Time
03/09/2002200003/10/20022348
03/13/2002180003/14/20021500
Subject:
SGP/BRS/C1 - Missing data due to Ice storm and clock problems
DataStreams:sgpbrsC1.00, sgpbrsC1.a2, sgpbrs20sC1.a0, sgpbrs60sC1.a1, sgp1swfanalbrs1longC1.c1,
sgp15swfanalbrs1longC1.c1
Description:
Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.
Measurements:sgpbrs20sC1.a0:
  • Instantaneous Upwelling Shortwave Irradiance, Inverted Pyranometer Thermopile
    Voltage(inst_up_short_hemisp)
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Time offset of tweaks from base_time(time_offset)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Upwelling Pyrgeometer Thermopile Voltage, Pyrgeometer(inst_up_long_hemisp_tp)
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • north latitude for all the input platforms.(lat)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
  • Time offset from base_time(base_time)
  • altitude above sea levelaltunits(alt)
sgp15swfanalbrs1longC1.c1:
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Site Identification(site)
  • Time offset of tweaks from base_time(time_offset)
  • altitude above sea levelaltunits(alt)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Number of 1-minute Cloud Fraction Estimates in the 15-minute Interval (Ncf)(nsamples_cloudfraction)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Number of 1-minute Clear-sky Fit Downwelling Global Shortwave Irradiance
    Estimates in the 15-minute Interval (Ncsw)(nsamples_gswfluxdn_clearskyfit)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • Number of 1-minute Clear-sky Detections in the 15-minute Interval (Nclr)(nsamples_clearsky_detection)
  • Beginning Time of File (LST)(base_time_LST)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • east longitude for all the input platforms.(lon)
  • Number of 1-minute Measured Downwelling Summed Shortwave Irradiances in the
    15-minute Interval (Nssw)(nsamples_sswfluxdn_measured)
  • Time Offset from base_time_LST(time_offset_LST)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • Ratio of Measured minus Clear-sky Fit Estimated Downwelling Diffuse Shortwave
    Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance
    (di(difcloudeffect_normalized)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • north latitude for all the input platforms.(lat)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Average over the interval of the standard deviation of difratiodn_measured
    computed using a 3-5 sample window centered at each 1-min sample(difratiodn_measured_stdev)
  • Estimated Average Fractional Sky Cover over the Hemispheric Dome (cf)(cloudfraction)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Time offset from base_time(base_time)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
sgp1swfanalbrs1longC1.c1:
  • Clear-sky Fit Coefficient b to Global Shortwave Irradiance (CSWb)(coef_clearsky_gsw_b)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • Clear-sky Fit Coefficient a to Global UVB Irradiance (UVBa)(coef_clearsky_guvb_a)
  • Clear-sky Fit Coefficient b to Summed Shortwave Irradiance (CSWb)(coef_clearsky_ssw_b)
  • Clear-sky Fit Coefficient a to Global Shortwave Irradiance (CSWa)(coef_clearsky_gsw_a)
  • Clear-sky Fit Coefficient b to Global UVB Irradiance (UVBb)(coef_clearsky_guvb_b)
  • Clear-sky Fit Coefficient a to Albedo (Alba)(coef_clearsky_albedo_a)
  • Site Identification(site)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • east longitude for all the input platforms.(lon)
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Clear-sky Fit Coefficient b to Diffuse Irradiance to Total Irradiance Ratio
    (DFRb)(coef_clearsky_difratio_b)
  • Time Offset from base_time_LST(time_offset_LST)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • Clear-sky Fit Coefficient a to Global minus Summed Shortwave Irradiance
    Difference (SCORa)(coef_clearsky_dsw_a)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • north latitude for all the input platforms.(lat)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • Clear-sky Fit Coefficient b to Albedo (Albb)(coef_clearsky_albedo_b)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Clear-sky Fit Coefficient b to Global minus Summed Shortwave Irradiance
    Difference (SCORb)(coef_clearsky_dsw_b)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Time offset of tweaks from base_time(time_offset)
  • altitude above sea levelaltunits(alt)
  • Date (YYMMDD LST) for which the Coefficients are Applicable(coef_date)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Clear-sky Fit Coefficient a to Summed Shortwave Irradiance (CSWa)(coef_clearsky_ssw_a)
  • Clear-sky Fit Coefficient a to Diffuse Irradiance to Total Irradiance Ratio
    (DFRa)(coef_clearsky_difratio_a)
  • Daily Averaged Distance from the Earth to the Sun (auavg)(sun_earth_distance_dailyaverage)
  • Beginning Time of File (LST)(base_time_LST)
  • Clear-sky Offset Coefficient c for Global minus Summed Shortwave Irradiance
    Difference (SCORc)(coef_clearsky_dsw_c)
  • Clear-sky Detection Flag (clrf)(flag_clearsky_detection)
  • Time offset from base_time(base_time)
sgpbrsC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpbrs60sC1.a1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Battery voltage(vBatt)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Time offset from base_time(base_time)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • north latitude for all the input platforms.(lat)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • east longitude for all the input platforms.(lon)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Time offset of tweaks from base_time(time_offset)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • altitude above sea levelaltunits(alt)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
sgpbrsC1.a2:
  • Battery voltage(vBatt)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Time offset from base_time(base_time)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Instantaneous Upwelling Pyrgeometer Dome Thermistor Temperature, Pyrgeometer(inst_up_long_dome_temp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_case_temp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_temp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Instantaneous Upwelling Pyrgeometer Case Thermistor Temperature, Pyrgeometer(inst_up_long_case_temp)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Time offset of tweaks from base_time(time_offset)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)

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DQRID : D031218.1
Start DateStart TimeEnd DateEnd Time
06/25/2003184007/05/20031523
Subject:
SGP/TSI/C1 - Shadowband misaligned
DataStreams:sgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.a1, sgptsiskycoverC1.b1,
sgptsiskyimageC1.a1
Description:
The shadowband and mask were initially misaligned after the re-installation of the TSI.
Measurements:sgptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
sgptsiskycoverC1.b1:
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number total thin(count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
sgptsiC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgptsiskycoverC1.a1:
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Percentage thin cloud(percent.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
sgptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

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DQRID : D040526.1
Start DateStart TimeEnd DateEnd Time
07/02/2000003505/05/20032359
Subject:
SGP/TSI/C1 - Metadata errors
DataStreams:sgptsiskycoverC1.a1, sgptsiskycoverC1.b1
Description:
The latitude, longitude and altitude of the Total Sky Imager 
(TSI) were incorrectly entered into the ARM database.  The 
correct location of the SGP.C1 TSI is:
   Lat: 36.606N
   Lon: 97.485W
   Alt:    316m
Measurements:sgptsiskycoverC1.b1:
  • altitude above sea levelaltunits(alt)
  • north latitude for all the input platforms.(lat)
  • east longitude for all the input platforms.(lon)
sgptsiskycoverC1.a1:
  • altitude above sea levelaltunits(alt)
  • east longitude for all the input platforms.(lon)
  • north latitude for all the input platforms.(lat)

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DQRID : D041116.2
Start DateStart TimeEnd DateEnd Time
10/25/2004164011/16/20042232
Subject:
SGP/TSI/C1 - Shadowband Misalignment
DataStreams:sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
Description:
The shadowband was slightly misaligned and was corrected by adjusting it +2 degrees.
Measurements:sgptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
sgptsiskycoverC1.b1:
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: number total in processed circle(count.sky)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number total thin(count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
sgptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

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DQRID : D050321.2
Start DateStart TimeEnd DateEnd Time
03/17/2005192504/05/20051630
Subject:
SGP/TSI/C1 - Instrument failure
DataStreams:sgptsiC1.00, sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
Description:
The TSI-880 experienced a power and/or computer failure. It was replaced with a spare 
TSI-440 and data collection resumed 4/5/05.  Note: this is a temporary replacement.
Measurements:sgptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
sgptsiskycoverC1.b1:
  • Time offset of tweaks from base_time(time_offset)
  • Pixel count: number total in sun circle(region.sun.count)
  • east longitude for all the input platforms.(lon)
  • Pixel count: number total indeterminant(count.unknown)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • altitude above sea levelaltunits(alt)
  • Pixel count: number total in processed circle(count.sky)
  • Time offset from base_time(base_time)
  • Sunshine meter(sunny)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total in horizon area(region.horizon.count)
  • north latitude for all the input platforms.(lat)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number total thin(count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Solar azimuth angle(solar.azimuth)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
sgptsiC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

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DQRID : D050322.1
Start DateStart TimeEnd DateEnd Time
04/18/2003000012/17/20042030
Subject:
SGP/BRS/C1 - low downwelling shortwave readings
DataStreams:sgpbrsC1.00, sgpbrsC1.b1, sgpbrs20sC1.a0
Description:
Downwelling shortwave (DS) values frequently drop below -10 W/m^2 at night, and are 
consistently 20-40 W/m^2 less than the calculated downwelling shortwave during the day in 
clear-sky conditions. Corrective maintenance on 12/17/2004 corrected this offset.  It is not 
clear which CM action corrected the problem since the DS instrument cable was grounded to 
a new location and the DS ventilator fan was found in poor condition and was replaced.  
Either of these issues could have led to the problem observed in this instrument.
Measurements:sgpbrs20sC1.a0:
  • Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
    Voltage(inst_global)
sgpbrsC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
sgpbrsC1.b1:
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)

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DQRID : D050502.2
Start DateStart TimeEnd DateEnd Time
03/25/1997000012/10/20032359
Subject:
SGP/SIRS/C1 - SWFANAL Data description error
DataStreams:sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1
Description:
The long name attribute for the cloud effect fields incorrectly
defines the cloud effect to be the difference between the 
clearskyfit and measured values:

"Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ;

The cloud effects are correctly calculated by subtracting the 
irradiance calculated in the clear sky fit from the measured 
irradiance.

"Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ;

NOTE: this is just a documentation error.  The data are correctly
calculated.
Measurements:sgp1swfanalsirs1longC1.c1:
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
sgp15swfanalsirs1longC1.c1:
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)

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DQRID : D050502.3
Start DateStart TimeEnd DateEnd Time
04/01/2001000012/10/20032359
Subject:
SGP/BRS/C1 - SWFANAL Data description error
DataStreams:sgp1swfanalbrs1longC1.c1, sgp15swfanalbrs1longC1.c1
Description:
The long name attribute for the cloud effect fields incorrectly
defines the cloud effect to be the difference between the 
clearskyfit and measured values:
   
"Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ;
   
The cloud effects are correctly calculated by subtracting the
irradiance calculated in the clear sky fit from the measured 
irradiance.
   
"Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ;
   
NOTE: this is just a documentation error.  The data are correctly
calculated.
Measurements:sgp15swfanalbrs1longC1.c1:
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
sgp1swfanalbrs1longC1.c1:
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)

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DQRID : D050722.1
Start DateStart TimeEnd DateEnd Time
04/16/2002200006/28/20052300
Subject:
SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgp1mwravgC1.c1, sgp5mwravgC1.c1,
sgpqmemwrcolC1.c1
Description:
IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable 
water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were 
based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant 
(1957) liquid water absorption model.  

Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz 
(1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption 
model were developed.  The Rosenkranz water vapor absorption model resulted a 2 percent 
increase in PWV relative to the earlier Liebe and Layton model.  The Liebe liquid water 
absorption model decreased the LWP by 10% relative to the Grant model.  However, the 
increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was 
particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA).

Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, 
pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN 
compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in 
Rosenkranz (1998), provided a better fit to the microwave brightness temperature 
measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals.  
Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which 
utilizes the HITRAN compilation for its spectroscopic parameters.  These new retrievals 
provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on 
Rosenkranz (1998).

Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for 
most purposes it will be sufficient to correct the data using the following factors:

PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ
LWP_MONORTM = 1.026  * LWP_ROSENKRANZ

The Rosenkranz-based retrieval coefficients became active as follows (BCR 456):
SGP/C1 (Lamont)     4/16/2002, 2000
SGP/B1 (Hillsboro)  4/12/2002, 1600
SGP/B4 (Vici)       4/15/2002, 2300
SGP/B5 (Morris)     4/15/2002, 2300
SGP/B6 (Purcell)    4/16/2002, 2200
SGP/E14(Lamont)     4/16/2002, 0000
NSA/C1 (Barrow)     4/25/2002, 1900 
NSA/C2 (Atqasuk)    4/18/2002, 1700
TWP/C1 (Manus)      5/04/2002, 0200
TWP/C2 (Nauru)      4/27/2002, 0600
TWP/C3 (Darwin)     inception

The MONORTM-based retrieval coefficients became active as follows (BCR 984):

SGP/C1 (Lamont)     6/28/2005, 2300
SGP/B1 (Hillsboro)  6/24/2005, 2100
SGP/B4 (Vici)       6/24/2005, 2100
SGP/B5 (Morris)     6/24/2005, 2100
SGP/B6 (Purcell)    6/24/2005, 1942
SGP/E14(Lamont)     6/28/2005, 2300
NSA/C1 (Barrow)     6/29/2005, 0000 
NSA/C2 (Atqasuk)    6/29/2005, 0000
TWP/C1 (Manus)      6/30/2005, 2100
TWP/C2 (Nauru)      6/30/2005, 2100
TWP/C3 (Darwin)     6/30/2005, 2100
PYE/M1 (Pt. Reyes)  4/08/2005, 1900**

** At Pt. Reyes, the original retrieval coefficients implemented in March 2005 were based 
on a version of the Rosenkranz model that had been modified to use the HITRAN half-width 
at 22 GHz and to be consistent with the water vapor continuum in MONORTM.  These 
retrievals yield nearly identical results to the MONORTM retrievals.  Therefore the Pt. Reyes 
data prior to 4/08/2005 may not require reprocessing.
Measurements:sgpmwrtipC1.a1:
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
sgp5mwravgC1.c1:
  • Mean total water vapor amount along LOS path(vap)
  • Mean total liquid water amount along LOS path(liq)
sgpmwrlosC1.b1:
  • Mean total water vapor amount along LOS path(vap)
  • Mean total liquid water amount along LOS path(liq)
sgp1mwravgC1.c1:
  • Mean total liquid water amount along LOS path(liq)
  • Mean total water vapor amount along LOS path(vap)
sgpqmemwrcolC1.c1:
  • Ensemble average for MWR vapor in window centered about balloon release(mean_vap_mwr)
  • Ensemble average for MWR liquid in window centered about balloon release(mean_liq_mwr)
sgpmwrlosC1.a1:
  • Mean total liquid water amount along LOS path(liq)
  • Mean total water vapor amount along LOS path(vap)

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DQRID : D050812.12
Start DateStart TimeEnd DateEnd Time
09/21/1999000008/10/20051445
Subject:
SGP/THWAPS/C1 - Minor bias in saturation vapor pressure
DataStreams:sgpthwapsC1.b1
Description:
The saturation vapor correction when temps are below 0C contained an error
in the multiplier.  The incorrect multiplier only equates to an error of
0.01 kPa which is less than the stated uncertainty of the measurement (+/-
0.035 kPa).
Measurements:sgpthwapsC1.b1:
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D050928.8
Start DateStart TimeEnd DateEnd Time
08/01/2005213510/06/20051650
Subject:
SGP/TSI/C1 - Heater problem
DataStreams:sgptsicldmaskC1.a1, sgptsiskycoverC1.b1, sgptsiskyimageC1.a1
Description:
The TSI was converted from a model 880 to 660 which requires separate power for the mirror 
heater. The heater was not powered during this period so morning dew and other 
condensation was not quickly evaporated.
Measurements:sgptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
sgptsiskycoverC1.b1:
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number total thin(count.thin)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
sgptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

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DQRID : D060630.7
Start DateStart TimeEnd DateEnd Time
12/11/2003193502/16/20061903
Subject:
SGP/BRS/C1 - Reprocessed: Longwave Calibration error
DataStreams:sgpbrsC1.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in June 2004. These 
modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in November 2006.
Measurements:sgpbrsC1.b1:
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D060630.8
Start DateStart TimeEnd DateEnd Time
12/11/2003195002/16/20061901
Subject:
SGP/SIRS/C1 - Reprocessed: Longwave Calibration error
DataStreams:sgpsirsC1.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003. 
These modified procedures introduced a calibration bias in the longwave data. The previous 
procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations. 

The data collected while the incorrect procedures were in place have been reprocessed to 
remove the calibration bias.  The reprocessed 60 second averaged data are based on 3 
instantaneous 20 second data records rather than on 60 1 second instantaneous data records. 
Still, these data are considered far superior to the originally processed data. The 
reprocessed data were archived in October 2006.
Measurements:sgpsirsC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Upwelling Longwave Hemispheric Net Infrared(up_long_netir)

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DQRID : D061102.1
Start DateStart TimeEnd DateEnd Time
12/11/2003192006/14/20042359
Subject:
SGP/BRS/C1 - Reprocess: Calibration error in Downwelling Longwave measurement
DataStreams:sgpbrsC1.b1, sgpbrs20sC1.a0
Description:
On 20031211 the Downwelling LW pyrgeometer was replaced but the calibrations were not 
updated.  Calibrations have been corrected in data beginning 20040615.
Measurements:sgpbrs20sC1.a0:
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
sgpbrsC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)

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