SGP/MFR25M/C1 - Loose connections

No solar data after 03/24/2002 and no head temp data after 03/25/2002. Connections were 
reseated on 04/02/2002, but the data still looked bad.  More maintenance occurred on 
04/11/2002, when a reseating and tightening of the connections was performed.

• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Data Logger Supply Voltage(logger_volt)
• Time offset of tweaks from base_time(time_offset)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• north latitude for all the input platforms.(lat)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• east longitude for all the input platforms.(lon)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• altitude above sea levelaltunits(alt)
• Detector Temperature(head_temp)
• Time offset from base_time(base_time)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• north latitude for all the input platforms.(lat)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Data Logger Supply Voltage(logger_volt)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Time offset from base_time(base_time)
• altitude above sea levelaltunits(alt)
• Detector Temperature(head_temp)
• east longitude for all the input platforms.(lon)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Time offset of tweaks from base_time(time_offset)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

SGP/MFRSR/E27 - Reprocess: Bad Calibration

The instrument was replaced on 20060104 but there was a problem with the calibration file. 
 The calibration issue has now been resolved and a request has been submitted to 
reprocess the data in the time range covered by this DQR.  When that has been accomplished, this 
DQR will be negated.

• 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)
• 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 Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
• Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
• Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
• 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 5, offset and cosine corrected(diffuse_hemisp_narrowband_filter5)
• Narrowband Diffuse Hemispheric Irradiance, Filter 6, offset and cosine corrected(diffuse_hemisp_narrowband_filter6)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
• Narrowband Hemispheric Irradiance, Filter 5, offset and cosine corrected(hemisp_narrowband_filter5)
• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
• Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
• Narrowband Hemispheric Irradiance, Filter 3, offset and cosine corrected(hemisp_narrowband_filter3)
• Narrowband Hemispheric Irradiance, Filter 6, offset and cosine corrected(hemisp_narrowband_filter6)

• Narrowband Hemispheric Irradiance, Filter 6, offset and cosine corrected(hemisp_narrowband_filter6)
• Narrowband Hemispheric Irradiance, Filter 5, offset and cosine corrected(hemisp_narrowband_filter5)
• Narrowband Diffuse Hemispheric Irradiance, Filter 3, offset and cosine corrected(diffuse_hemisp_narrowband_filter3)
• 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)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
• Narrowband Hemispheric Irradiance, Filter 4, offset and cosine corrected(hemisp_narrowband_filter4)
• 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 Hemispheric Irradiance, Filter 3, offset and cosine corrected(hemisp_narrowband_filter3)
• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
• Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
• Narrowband Hemispheric Irradiance, Filter 2, offset and cosine corrected(hemisp_narrowband_filter2)
• Narrowband Hemispheric Irradiance, Filter 1, offset and cosine corrected(hemisp_narrowband_filter1)
• Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_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 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)
• Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
• Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)

• rejected points for the final fit for the Direct Narrowband Filter4(barnard_rejected_filter4)
• rejected points for the final fit for the Direct Narrowband Filter5(barnard_rejected_filter5)
• rejected points for the final fit for the Direct Narrowband Filter6(barnard_rejected_filter6)
• log(irradiance) for the Direct Narrowband Filter3(barnard_lnI_filter3)
• rejected points for the final fit for the Direct Narrowband Filter1(michalsky_rejected_filter1)
• rejected points for the final fit for the Direct Narrowband Filter3(michalsky_rejected_filter3)
• log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
• rejected points for the final fit for the Direct Narrowband Filter5(michalsky_rejected_filter5)
• rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter6(michalsky_rejected_filter6)
• rejected points for the final fit for the Direct Narrowband Filter4(michalsky_rejected_filter4)
• log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
• log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)
• rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
• log(irradiance) for the Direct Narrowband Filter6(michalsky_lnI_filter6)
• log(irradiance) for the Direct Narrowband Filter2(michalsky_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter5(michalsky_lnI_filter5)
• log(irradiance) for the Direct Narrowband Filter4(michalsky_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter3(michalsky_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter6(barnard_lnI_filter6)
• rejected points for the final fit for the Direct Narrowband Filter3(barnard_rejected_filter3)
• rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter1(barnard_rejected_filter1)
• log(irradiance) for the Direct Narrowband Filter5(barnard_lnI_filter5)
• rejected points for the final fit for the Direct Broadband(barnard_rejected_broadband)
• log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter1(barnard_lnI_filter1)

• aerosol optical depth filter 1(aerosol_optical_depth_filter1)
• Ozone absorption coefficient used for filter 2(Ozone_absorption_coefficient_filter2)
• Ozone absorption coefficient used for filter 1(Ozone_absorption_coefficient_filter1)
• Rayleigh optical thickness computed for filter 1(Rayleigh_optical_thickness_filter1)
• aerosol optical depth filter 3(aerosol_optical_depth_filter3)
• aerosol optical depth filter 2(aerosol_optical_depth_filter2)
• Rayleigh optical thickness computed for filter 3(Rayleigh_optical_thickness_filter3)
• Rayleigh optical thickness computed for filter 4(Rayleigh_optical_thickness_filter4)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter1)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter2)
• Ozone absorption coefficient used for filter 3(Ozone_absorption_coefficient_filter3)
• Ozone absorption coefficient used for filter 4(Ozone_absorption_coefficient_filter4)
• Ozone absorption coefficient used for filter 5(Ozone_absorption_coefficient_filter5)
• 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_filter4)
• Rayleigh optical thickness computed for filter 2(Rayleigh_optical_thickness_filter2)
• total optical depth direct narrowband filter 3(total_optical_depth_filter3)
• Rayleigh optical thickness computed for filter 5(Rayleigh_optical_thickness_filter5)
• totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter3)
• total optical depth direct narrowband filter 4(total_optical_depth_filter4)
• 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_filter5)
• angstrom exponent(angstrom_exponent)
• Indicator of optical depth stability(optical_depth_stability_flag)
• total optical depth direct narrowband filter 1(total_optical_depth_filter1)
• total optical depth direct narrowband filter 5(total_optical_depth_filter5)

• number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter6(michalsky_number_points_filter6)
• rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
• rejection flag for Direct Broadband(barnard_badflag_broadband)
• solar constant corrected for solar distance for the Direct Broadband(michalsky_solar_constant_sdist_broadband)
• standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
• percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
• rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(michalsky_good_fraction_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(michalsky_good_fraction_filter2)
• optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
• solar constant for the Direct Narrowband Filter1(michalsky_solar_constant_filter1)
• solar constant corrected for solar distance for the Direct Narrowband Filter5(barnard_solar_constant_sdist_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(michalsky_good_fraction_filter1)
• rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
• solar constant corrected for solar distance for the Direct Narrowband Filter6(barnard_solar_constant_sdist_filter6)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(barnard_good_fraction_filter5)
• optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
• rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
• optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
• number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
• solar constant for the Direct BroadBand(michalsky_solar_constant_broadband)
• number of points used in final linear fit for the Direct Broadband(barnard_number_points_broadband)
• optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
• solar constant corrected for solar distance for the Direct Narrowband Filter4(michalsky_solar_constant_sdist_filter4)
• optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)
• rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
• standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
• solar constant corrected for solar distance for the Direct Narrowband Filter5(michalsky_solar_constant_sdist_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(barnard_good_fraction_filter2)
• error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
• rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
• standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
• error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
• solar constant for the Direct Narrowband Filter6(michalsky_solar_constant_filter6)
• percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
• error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
• standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(michalsky_good_fraction_filter6)
• 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
  Filter3(barnard_good_fraction_filter3)
• solar constant for the Direct Narrowband Filter5(michalsky_solar_constant_filter5)
• rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
• error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
• solar constant corrected for solar distance for the Direct Narrowband Filter3(michalsky_solar_constant_sdist_filter3)
• rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
• solar constant corrected for solar distance for the Direct Narrowband Filter2(michalsky_solar_constant_sdist_filter2)
• optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
• solar constant corrected for solar distance for the Direct Narrowband Filter3(barnard_solar_constant_sdist_filter3)
• standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
• 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)
• solar constant for the Direct Narrowband Filter3(michalsky_solar_constant_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(barnard_good_fraction_filter1)
• error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
• solar constant corrected for solar distance for the Direct Narrowband Filter1(michalsky_solar_constant_sdist_filter1)
• solar constant corrected for solar distance for the Direct Narrowband Filter4(barnard_solar_constant_sdist_filter4)
• optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
• number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)
• solar constant for the Direct Narrowband Filter4(michalsky_solar_constant_filter4)
• solar constant corrected for solar distance for the Direct BroadBand(barnard_solar_constant_sdist_broadband)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(barnard_good_fraction_filter4)
• solar constant for the Direct Narrowband Filter2(michalsky_solar_constant_filter2)
• error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
• solar constant corrected for solar distance for the Direct Narrowband Filter2(barnard_solar_constant_sdist_filter2)
• rejection flag for Direct Broadband(michalsky_badflag_broadband)
• error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
• rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter6(barnard_error_slope_filter6)
• number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter3(barnard_error_slope_filter3)
• 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 Narrowband
  Filter6(barnard_good_fraction_filter6)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter5(barnard_error_slope_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
• optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(michalsky_good_fraction_filter4)
• standard deviation around regression line for the Direct Narrowband Filter2(michalsky_standard_deviation_filter2)
• optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
• optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
• optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter1(barnard_error_slope_filter1)
• rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
• solar constant corrected for solar distance for the Direct Narrowband Filter6(michalsky_solar_constant_sdist_filter6)
• optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
• Angstrom exponent(michalsky_angstrom_exponent)
• rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
• rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter4(barnard_error_slope_filter4)
• Angstrom exponent(barnard_angstrom_exponent)
• number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
• optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
• solar constant corrected for solar distance for the Direct Narrowband Filter1(barnard_solar_constant_sdist_filter1)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter2(barnard_error_slope_filter2)
• number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
• 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 Narrowband Filter4(michalsky_number_points_filter4)

SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes

Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS 
windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 
2006.  The radiosonde type used for the each sounding may be determined by looking the 
metadata variable "launch_status" in the netCDF data files.

• east longitude for all the input platforms.(lon)
• model zonal wind velocity(u_wind)
• surface wind speed(wspd)
• model meridional wind velocity(v_wind)
• north latitude for all the input platforms.(lat)
• Wind Direction(deg)
• Wind Status(wstat)

NIM/TSI/M1 - Reprocess: Data processing problem

Due to the high aerosol conditions at Niamey, the TSI appeared to be beyond the limits of 
processing the color JPEG image into cloud fraction values. Several attempts to adjust 
the sky filter values used to process the images did not yielded the desired results. The 
processed images indicate an opaque sky cover, even in the absence of clouds.

The problem was corrected by removing the neutral density filter from the lens and 
re-adjusting the sky filter values.

The data can be reprocessed.

• PNG data stream - documentation not supported(png)

• Pixel count: number total thin(count.thin)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Pixel count: number total opaque(count.opaque)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Sunshine meter(sunny)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: number thin in sun circle(region.sun.count.thin)
• Percent opaque cloud(percent.opaque)
• Percentage thin cloud(percent.thin)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)

SGP/SMOS/E21 - Wind Monitor Impacting Bird Spikes

The wind direction is flatlining and wind speed occasionally does not compare well with 
co-located ECOR.  Problems with the height of the mount caused the vane to impact the bird 
deterrent spikes and "catch".  Symptoms appear as winds coming out of a 255 to 270 
direction for long period of times.  The wind speed values are also affected as the wind 
monitor is no longer normal to the wind direction.

• surface wind speed(wspd)
• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)

• Wind Speed (vector averaged)(wspd_va)
• surface wind speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)
• Unit Vector Wind Direction(wdir)

• Minimum of Wind speed(min_wspd)
• Time of Minimum Wind Speed(time_min_wspd)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Wind Speed(time_max_wspd)

NIM/ECOR/M1 - Data Suspect for NW and East Wind Directions

problem will remain for the entire extend of the NIM deployment.

• rotated covariance uw(cvar_rot_uw)
• vw covariance(cvar_vw)
• rotated covariance wc(cvar_rot_wc)
• mean value of out of range values and spikes of t -9999 if no spikes(mean_spk_t)
• CO2 flux(fc)
• mean sonic temperature (t), i.e. virtual temperature(mean_t)
• corrected sensible heat flux(h)
• latent heat flux(lv_e)
• rotated covariance vw(cvar_rot_vw)
• rotated mean w(mean_rot_w)
• mean water vapor concentration (q)(mean_q)
• covariance wq(cvar_wq)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• momentum flux (dynamic)(k)
• mean co2 concentration (c)(mean_c)
• uw covariance(cvar_uw)
• covariance wc(cvar_wc)
• mean value of \spike\ w samples(mean_spk_w)
• wT covariance(cvar_wt)
• mean w (vertical) wind component(mean_w)
• friction velocity(ustar)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)

SGP/ECOR/E10 - LI-7500 Pressure and Temperature missing

The LI-7500 pressure and temperature were not recorded;
the serial datastream was not being captured by the ECOR.

• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• average temperature (IGRA internal sensor)(temp_irga)

SGP/ECOR/E16 - LI-7500 Pressure and Temperature missing

The pressure and temperature measurements were not recorded; the LI-7500 serial datastream 
was not being captured by the ECOR system because of a serial port failure.

Some degradation of the latent and sensible heat fluxes may have occurred during high 
summer temperatures.  The error in the fluxes would be no more than 5 to 10% of the 
measurement, still well within the measurement error of the system.

• latent heat of vaporization(lv)
• latent heat flux(lv_e)
• corrected sensible heat flux(h)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• Retrieved water vapor density profile(rho)
• average temperature (IGRA internal sensor)(temp_irga)
• specific heat of moist air(cp)

SGP/NIMFR/E13 - Reprocess: Miscalibrated detectors #5 and #6

Filter detectors 5 and 6 are miscalibrated following repair and reinstallation in May 
2006.

• Direct Normal Narrowband Irradiance, Filter 5(direct_norm_narrowband_filter5)
• Direct Normal Narrowband Irradiance, Filter 6(direct_norm_narrowband_filter6)
• Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)

• Direct Normal Narrowband Irradiance, Filter 6(direct_norm_narrowband_filter6)
• Direct Normal Narrowband Irradiance, Filter 5(direct_norm_narrowband_filter5)

SGP/MWR/C1 - Spikes in ambient temperature readings

There are intermittent spikes in the Tkair temperature (T ~ 400 K). On 7/28 the sensor 
was cleaned and the instrument power cycled following a power outage. Readings came back to 
normal.

• Ambient temperature(tkair)

• Ambient temperature(tkair)

NSA/MWR/C1 - TKAIR sensor failure

Between 7/14 and 7/28 the tkair variable is missing most of the time and sometimes has 
large negative spikes.  On 7/28, the sensor was cleaned of corrosion and the readings came 
back to normal.

• Ambient temperature(tkair)

SGP/MWR/B5 - Mixer temp unstable

The radiometer mixer temperature was unstable during this time interval. The instability 
will slightly affect calibration.  On 8/21, the instrument was sent to the vendor for 
repair.

June and July data are suspect, the calibration may be slightly incorrect. August data 
should not be used.

• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• 31.4 GHz sky signal(tipsky31)
• Noise diode mount temperature(tknd)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• 31.4 GHz goodness-of-fit coefficient(r31)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Temperature correction coefficient at 31.4 GHz(tc31)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Mixer kinetic (physical) temperature(tkxc)
• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
• 23.8 GHz sky signal(tipsky23)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• 23.8 GHz goodness-of-fit coefficient(r23)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)

• Mixer kinetic (physical) temperature(tkxc)
• Temperature correction coefficient at 31.4 GHz(tc31)
• 23.8 GHz sky signal(sky23)
• Mean total water vapor amount along LOS path(vap)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Noise diode mount temperature(tknd)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Mean total liquid water amount along LOS path(liq)
• 31.4 GHz sky signal(sky31)
• Mean 23.8 GHz sky brightness temperature(tbsky23)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)

NSA/SKYRAD/C2 - Summer solstice shading of radiometers

On and around the summer solstice, the NIP (Direct Normal shortwave measurement) and PSP 
(global hemispheic shortwave measurement) radiometers are shaded by other instruments or 
support structures. Shading azimuths have been determined for this site.  The radiometer 
mentor suggests not using the data from the NIP and PSP radiometers when the sun is within 
the following azimuth bounds (typically from May 8th to August 5th of each year):
Instr   Obstruction   AzStart   AzEnd
NIP     rad table     356       17
PSP     mfrsr         341       353

Note: There are a number of objects near the NW,N and NE horizon that may affect sunrise 
data near the summer soltice.

• PSP1 unshaded standard deviation(psp1_sd)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
• PSP shaded standard deviation(psps_sd)
• PSP shaded mean(psps_mean)
• NIP maximum(nip_max)
• NIP mean(nip_mean)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
• PSP1 unshaded maximum(psp1_max)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
  Deviation(down_short_hemisp_std)
• NIP minimum(nip_min)
• NIP standard deviation(nip_sd)
• PSP1 unshaded minimum(psp1_min)
• PSP shaded minimum(psps_min)
• PSP1 unshaded mean(psp1_mean)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
• Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
• PSP shaded maximum(psps_max)

NSA/SKYRAD/C1 - Summer solstice shading of radiometers

On and around the summer solstice, the NIP (Direct Normal shortwave measurement) and PSP 
(global hemispheic shortwave measurement) radiometers are shaded by other instruments or 
support structures.  Shading azimuths have been determined for this site.  The radiometer 
mentor suggests not using the data from the NIP and PSP radiometers when the sun is 
within the following azimuth bounds (typically from May 8th to August 5th of each year):
Instrmt Obstruction     AzStart     AzEnd     
NIP     rad table       346         358
NIP     met tower       13          15
PSP     mfrsr           6           16

• Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
• NIP maximum(nip_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
  Deviation(down_short_hemisp_std)
• NIP standard deviation(nip_sd)
• NIP minimum(nip_min)
• PSP1 unshaded minimum(psp1_min)
• PSP shaded maximum(psps_max)
• Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
• NIP mean(nip_mean)
• PSP shaded minimum(psps_min)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
• PSP shaded mean(psps_mean)
• PSP1 unshaded maximum(psp1_max)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• PSP1 unshaded standard deviation(psp1_sd)
• PSP shaded standard deviation(psps_sd)
• PSP1 unshaded mean(psp1_mean)

SGP/MWR/B1 - Reprocess: wrong calibration

The radiometer was thermally unstable. Calibration coefficients for the time interval were 
re-derived after screening for bad values of TKxc.

• 23.8 GHz sky signal(tipsky23)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• Temperature correction coefficient at 31.4 GHz(tc31)
• Mixer kinetic (physical) temperature(tkxc)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
• Noise diode mount temperature(tknd)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• 23.8 GHz goodness-of-fit coefficient(r23)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• 31.4 GHz sky signal(tipsky31)
• 31.4 GHz goodness-of-fit coefficient(r31)

• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Noise diode mount temperature(tknd)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Mixer kinetic (physical) temperature(tkxc)
• Mean 23.8 GHz sky brightness temperature(tbsky23)
• Temperature correction coefficient at 31.4 GHz(tc31)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Mean total water vapor amount along LOS path(vap)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

SGP/EBBR/E27 - Most Measurements Suspect

The wrong EBBR program was used at this site.  Therefore, most of the measurements are 
suspect.

Note: Mentor reports reprocessing will not correct this problem.

• Resultant wind speed(res_ws)
• specific humidity(q)
• altitude above sea levelaltunits(alt)
• bottom relative humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• pressure at constant pressure surface(pres)
• top relative humidity(hum_top)
• north latitude for all the input platforms.(lat)
• Time offset of tweaks from base_time(time_offset)
• scalar wind speed(wind_s)
• temperature of the top humidity sensor chamber(thum_top)
• temperature of the bottom humidity sensor chamber(thum_bot)
• wind direction (relative to true north)(wind_d)
• Home signal(home)
• top vapor pressure(vp_top)
• bottom air temperature(tair_bot)
• Time offset from midnight of date of file. For CO data, this is identical to
  time_offset and is included for compatibility.(time)
• Time offset from base_time(base_time)
• top air temperature(tair_top)
• east longitude for all the input platforms.(lon)
• bottom vapor pressure(vp_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)

• 0-5 cm change in soil heat storage with time, site 2(ces1)
• Reference Thermistor Temperature(tref)
• temperature of the top humidity sensor chamber(thum_top)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• Soil moisture 5 (mass water/mass dry soil)(sm5)
• specific humidity(q)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• Resultant wind speed(res_ws)
• 5 cm soil heat flow, site 5(shf5)
• Soil moisture 4 (mass water/mass dry soil)(sm4)
• Soil moisture 1 (mass water/mass dry soil)(sm1)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• soil heat flow at the surface 5(g5)
• soil heat flow at the surface 3(g3)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Soil moisture 3 (mass water/mass dry soil)(sm3)
• top relative humidity(hum_top)
• soil heat flow at the surface 2(g2)
• soil heat flow at the surface 1(g1)
• top vapor pressure(vp_top)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• bottom relative humidity(hum_bot)
• bottom air temperature(tair_bot)
• 0-5 cm integrated soil temperature, site 4(ts4)
• 0-5 cm integrated soil temperature, site 2(ts1)
• north latitude for all the input platforms.(lat)
• soil heat flow at the surface 4(g4)
• wind direction (relative to true north)(wind_d)
• altitude above sea levelaltunits(alt)
• Soil heat capacity 5(cs5)
• Soil heat capacity 1(cs1)
• Soil heat capacity 4(cs4)
• 0-5 cm integrated soil temperature, site 5(ts5)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• latent heat flux(e)
• Time offset from base_time(base_time)
• pressure at constant pressure surface(pres)
• 0-5 cm integrated soil temperature, site 3(ts3)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• Soil heat capacity 3(cs3)
• bottom vapor pressure(vp_bot)
• east longitude for all the input platforms.(lon)
• Time offset of tweaks from base_time(time_offset)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• top air temperature(tair_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• 5 cm soil heat flow, site 2(shf2)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 5 cm soil heat flow, site 3(shf3)
• Soil moisture 2 (mass water/mass dry soil)(sm2)
• scalar wind speed(wind_s)
• 5 cm soil heat flow, site 4(shf4)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• 5 cm soil heat flow, site 1(shf1)
• average surface soil heat flow at the surface(ave_shf)
• corrected sensible heat flux(h)
• temperature of the bottom humidity sensor chamber(thum_bot)

• Soil moisture 5(r_sm5)
• Reference temperature(rr_tref)
• Battery(bat)
• Left air temperature(tair_l)
• north latitude for all the input platforms.(lat)
• Soil temperature 3(rr_ts3)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Soil temperature 4(rr_ts4)
• Soil moisture 2(r_sm2)
• east longitude for all the input platforms.(lon)
• scalar wind speed(wind_s)
• Soil temperature 5(rr_ts5)
• Right air temperature(tair_r)
• Soil moisture 3(r_sm3)
• Left relative humidity(mv_hum_l)
• Time offset from base_time(base_time)
• Soil moisture 4(r_sm4)
• Time offset of tweaks from base_time(time_offset)
• Soil heat flow 1(mv_hft1)
• Net radiation(mv_q)
• Soil heat flow 3(mv_hft3)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 5(mv_hft5)
• Right relative humidity(mv_hum_r)
• Soil temperature 1(rr_ts1)
• Atmospheric pressure(mv_pres)
• Signature(signature)
• altitude above sea levelaltunits(alt)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil moisture 1(r_sm1)
• Soil temperature 2(rr_ts2)
• Wind direction (relative to true north)(mv_wind_d)
• Soil heat flow 2(mv_hft2)
• Home signal(mv_home)

NSA/MWR/C2 - Spikes in air temperature readings

The TKair variables has occasional spikes due to sensor corrosion. On 8/1, the temperature 
sensor was replaced.

• Ambient temperature(tkair)

• Ambient temperature(tkair)

SGP/MWR/B1 - Missing data

Data are missing in this time period.

• Ambient temperature(tkair)
• Mean IR brightness temperature(ir_temp)
• Mean total liquid water amount along LOS path(liq)
• east longitude for all the input platforms.(lon)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• north latitude for all the input platforms.(lat)
• 31.4 GHz sky signal(sky31)
• Noise diode mount temperature(tknd)
• Time offset of tweaks from base_time(time_offset)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Mean 23.8 GHz sky brightness temperature(tbsky23)
• Temperature correction coefficient at 31.4 GHz(tc31)
• Time offset from base_time(base_time)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Sky/Cloud Infra-Red Temperature(sky_ir_temp)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• altitude above sea levelaltunits(alt)
• 31.4 GHz blackbody+noise injection signal(bbn31)
• 23.8 GHz sky signal(sky23)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• 31.4 GHz Blackbody signal(bb31)
• Mixer kinetic (physical) temperature(tkxc)
• Blackbody kinetic temperature(tkbb)
• Mean total water vapor amount along LOS path(vap)
• 23.8 GHz Blackbody signal(bb23)

• Blackbody kinetic temperature(tkbb)
• Actual elevation angle(actel)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• 23.8 GHz Blackbody signal(bb23)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• 31.4 GHz Blackbody signal(bb31)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• Mixer kinetic (physical) temperature(tkxc)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Actual Azimuth(actaz)
• 23.8 GHz sky signal(tipsky23)
• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• north latitude for all the input platforms.(lat)
• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• Temperature correction coefficient at 31.4 GHz(tc31)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
• Time offset of tweaks from base_time(time_offset)
• Noise diode mount temperature(tknd)
• Ambient temperature(tkair)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• 23.8 GHz goodness-of-fit coefficient(r23)
• east longitude for all the input platforms.(lon)
• altitude above sea levelaltunits(alt)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• 31.4 GHz sky signal(tipsky31)
• Time offset from base_time(base_time)
• 31.4 GHz goodness-of-fit coefficient(r31)
• 31.4 GHz blackbody+noise injection signal(bbn31)

SGP/MWR/B6 - Data missing

Data are missing because of computer problem and power outage at the site.

• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• east longitude for all the input platforms.(lon)
• Time offset from base_time(base_time)
• 31.4 GHz goodness-of-fit coefficient(r31)
• 23.8 GHz goodness-of-fit coefficient(r23)
• 31.4 GHz sky signal(tipsky31)
• 31.4 GHz blackbody+noise injection signal(bbn31)
• Noise diode mount temperature(tknd)
• 23.8 GHz sky signal(tipsky23)
• Actual elevation angle(actel)
• 23.8 GHz Blackbody signal(bb23)
• Blackbody kinetic temperature(tkbb)
• 31.4 GHz Blackbody signal(bb31)
• Mixer kinetic (physical) temperature(tkxc)
• Temperature correction coefficient at 31.4 GHz(tc31)
• altitude above sea levelaltunits(alt)
• Ambient temperature(tkair)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
• north latitude for all the input platforms.(lat)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Actual Azimuth(actaz)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• Time offset of tweaks from base_time(time_offset)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)

• Temperature correction coefficient at 31.4 GHz(tc31)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• east longitude for all the input platforms.(lon)
• altitude above sea levelaltunits(alt)
• 23.8 GHz Blackbody signal(bb23)
• Mean total water vapor amount along LOS path(vap)
• Mixer kinetic (physical) temperature(tkxc)
• Sky/Cloud Infra-Red Temperature(sky_ir_temp)
• 31.4 GHz Blackbody signal(bb31)
• north latitude for all the input platforms.(lat)
• Ambient temperature(tkair)
• Blackbody kinetic temperature(tkbb)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• Noise diode mount temperature(tknd)
• Temperature correction coefficient at 23.8 GHz(tc23)
• 31.4 GHz sky signal(sky31)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Mean IR brightness temperature(ir_temp)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Time offset from base_time(base_time)
• 23.8 GHz sky signal(sky23)
• 31.4 GHz blackbody+noise injection signal(bbn31)
• Mean total liquid water amount along LOS path(liq)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Time offset of tweaks from base_time(time_offset)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Mean 23.8 GHz sky brightness temperature(tbsky23)

SGP/WPDN/X1 - Reprocess: WPDN GPS has errors in station info

Starting 10/18/05, there are problems with the station information in the
sgp30wpdngpsX1.c1 data.   There are extra stations listed with shortened station 
abbreviations and shortened long names. The problem originated with the 10/18/05 input data which 
had corrupted input data.  The input file was
later corrected, but a config file which is used to keep track of new
stations continued to hold the incorrect station information. The data
itself is okay. There are just extra stations listed.
   
The data affected includes files from 10/18/05 - 08/27/06.  
Problem is reported in PIF P060829.1.

• Temperature used to determine the backscatter profile(temperature)
• Formal Error(formalError)
• Alphanumeric station name(staNam)
• Station Location(staLongNam)
• Water Vapor(waterVapor)
• Time offset of tweaks from base_time(time_offset)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Dry component GPS signal delay(dryDelay)
• Wet component GPS signal delay(wetDelay)
• east longitude for all the input platforms.(lon)
• Formal Error(sigma)
• Total GPS signal delay(totalDelay)
• time of observation(timeObs)
• altitude above sea levelaltunits(alt)
• Time offset from base_time(base_time)
• north latitude for all the input platforms.(lat)

NSA/SONDE/C1 - RH values offset due to error in ground check

Background: After installation of the latest software update , we began performing formal 
ground checks on RS92 radiosondes.  By comparing the radiosonde readings with reference 
values in a controlled environment, the ground check is intended to ensure that the 
radiosonde sensors are in calibration before launch.  The radisonde values during the ground 
check process are recorded automatically; the reference values are entered by the operator. 
 If the radiosonde readings vary from the reference values, the system 'corrects' the 
radiosonde values.  In the case of RH, the correction is applied as an offset (true RH = 
indicated RH + correction).

Problem: Some operators misunderstood the ground-check procedure and entered the 
radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done 
during this period have RH values that are different from what they would be if the 
ground check procedure had been done correctly.

Consequence:  Because the RH corrections generally are small (averaging about 0.5% RH) and 
the precision of the reported RH data during this time period is 1% RH, some values will 
not be affected at all; others will be off by about 1% RH (still within the stated 
accuracy of the sensor).  Furthermore, because entering the radiosonde value as the reference 
value results in a near zero 'correction,' one may view these soundings as being done 
without the ground check correction.  Also note that the dew point value will be suspect as well.

I am attaching below a listing of the soundings that were affected during the indicated 
time period.  Users can see the magnitude of the problem and choose whether or not to apply 
an offset in RH.  Note that application of the offset to the processed RH data (in the 
netCDF file) will not have the same effect of applying the correction to the absolutely 
raw data (before processing), but the differences should be insignificant.  Also note that 
the corrections for each sounding are included in the netCDF header information.  These 
attributes are named 'humidity_correction' and 'humidity_correction_2'.  The values of RH 
indicated by the radiosonde while it is in the ground check set are in attributes 
'humidity_gc_sonde' and 'humidity_gc_sonde_2.'  There is an RH reading for each of the two RH 
sensors used in the RS92 radiosonde.

Here is the list - RH1 and RH2 are the radiosonde readings in the ground check set.  Ref 
is the reference value entered by the operator.  The correcte reference value should be 
0%.  To obtain an approximation to the RH value that would have been recorded if the ground 
check had been done properly, subtract the Ref value from the indicated RH.

 YYYYMMDD  HHMM  SerialNo     RH1     RH2     Ref
 20060713  0532  B1924431    0.30    0.20    0.30
 20060713  1751  B1854963    0.20    0.30    0.30
 20060714  0521  B1924425    0.40    0.40    0.40
 20060714  1739  B1854206    0.30    0.30    0.30
 20060715  0522  B1715127    1.20    1.20    1.20
 20060715  1737  B1854966    0.60    0.60    0.60
 20060716  0508  B1715126    0.40    0.40    0.40
 20060716  1732  B1844098    0.50    0.50    0.50
 20060717  0517  B1914170    0.40    0.40    0.40
 20060718  0516  B1914173    0.70    0.70    0.70
 20060720  0523  B1854149    0.40    0.40    0.40
 20060721  0517  B1914153    0.40    0.40    0.40
 20060722  0521  B1844097    1.00    1.10    1.10
 20060722  1730  B1914174    0.60    0.70    0.70
 20060723  0537  B1714439    0.40    0.40    0.40
 20060723  1734  B1734155    0.50    0.50    0.50
 20060724  0529  B1134336    0.50    0.50    0.50
 20060725  0525  B1754099    0.60    0.70    0.70
 20060726  0541  B1844108    1.80    1.80    1.80
 20060727  0520  B1714382    0.70    0.80    0.70
 20060728  0531  B1854116    0.80    0.80    0.80
 20060729  0527  B1724027    1.00    1.00    1.00
 20060729  1726  B1714392    0.70    0.80    0.80
 20060730  0522  B1854100    0.70    0.80    0.80
 20060730  1724  B1854764    0.90    1.00    1.00
 20060731  0515  B1664086    0.90    0.80    0.90
 20060801  0520  B1724758    1.50    1.50    1.50
 20060801  1729  B1754116    1.10    1.10    1.10
 20060802  0518  B1724516    0.80    0.80    0.80
 20060803  0523  B1674148    0.80    0.80    0.80
 20060804  0532  B1754092    0.90    0.90    0.90
 20060804  1727  B1844117    3.50    3.50    3.50
 20060805  0531  B1714741    0.30    0.30    0.30
 20060805  1728  B1754098    0.30    0.30    0.30
 20060806  0528  B1844115    0.40    0.40    0.40
 20060806  1728  B1914161    0.20    0.20    0.20
 20060807  0530  B1714549    0.30    0.30    0.30
 20060808  0517  B1844107    0.50    0.50    0.50
 20060808  1744  B1914166    0.20    0.20    0.20
 20060809  0527  B1914164    0.30    0.40    0.40
 20060809  1736  B1914163    0.30    0.30    0.30
 20060810  0521  B1914160    0.40    0.50    0.50
 20060810  1745  B1744671    0.40    0.40    0.40
 20060811  0525  B1854965    0.50    0.50    0.50
 20060811  1753  B1724131    0.10    0.10    0.10
 20060812  0527  B1754104    0.50    0.50    0.50
 20060812  1740  B1854256    0.30    0.40    0.40
 20060813  0522  B1854240    0.30    0.40    0.40
 20060814  0525  B1714106    0.20    0.20    0.20
 20060814  1742  B1854106    0.40    0.40    0.40
 20060815  0534  B1914169    0.50    0.60    0.60
 20060815  1734  B1854233    0.60    0.70    0.70
 20060816  0539  B1724791    0.20    0.20    0.20
 20060816  1732  B1914171    0.10    0.20    0.20
 20060817  0535  B1354283    0.10    0.10    0.10
 20060817  1740  B1354574    0.40    0.40    0.40
 20060818  0516  B1354633    0.50    0.40    0.50
 20060818  1744  B1364673    0.20    0.20    0.20
 20060819  0538  B1364126    0.20    0.30    0.30
 20060819  1745  B1354598    0.50    0.60    0.60
 20060820  0532  B1354290    1.10    1.10    1.10
 20060820  1729  B1354317    0.40    0.40    0.40
 20060821  0530  B1354545    0.60    0.70    0.70
 20060821  1728  B1354516    0.70    0.70    0.70
 20060822  0524  B1354619    0.50    0.60    0.60
 20060822  1728  B1364377    0.40    0.40    0.40
 20060823  0533  B1354309    0.30    0.30    0.30
 20060823  1730  B1354527    0.70    0.70    0.70
 20060824  0533  B1354230    0.60    0.60    0.60
 20060824  1812  B1354587    0.70    0.70    0.70
 20060825  0517  B1354614    0.70    0.70    0.70
 20060825  1730  B1354630    0.60    0.60    0.60
 20060826  0537  B1334114    0.90    0.90    0.90
 20060826  1734  B1354246    0.70    0.70    0.70
 20060827  0508  B1354534    0.70    0.70    0.70
 20060827  1729  B1354618    0.60    0.60    0.60
 20060828  0517  B1354115    0.40    0.40    0.40
 20060828  1738  B1354206    0.50    0.60    0.60
 20060829  0516  B1354617    0.50    0.60    0.60
 20060829  1717  B1354622    0.50    0.60    0.60
 20060830  0511  B1354314    0.40    0.50    0.50
 20060830  1732  B1354537    0.60    0.70    0.70
 20060831  1802  B1354239    0.60    0.80    0.80
 20060905  1724  B1354626    0.60    0.60    0.60
 20060906  0522  B1354525    0.60    0.80    0.80
 20060906  1734  B1354107    0.50    0.50    0.50
 20060907  0537  B1354543    0.70    0.70    0.70
 20060907  1803  B1354586    0.80    0.80    0.80
 20060908  0531  B1354519    0.60    0.60    0.60
 20060908  1728  B1354224    0.60    0.60    0.60
 20060909  0534  B1354532    0.70    0.80    0.80
 20060909  1732  B1354513    0.80    0.90    0.90
 20060910  0516  B1354125    0.60    0.70    0.60
 20060910  1727  B1354110    0.40    0.50    0.50
 20060911  0528  B1354235    0.90    0.90    0.90
 20060911  1849  B1354514    0.70    0.70    0.70
 20060912  0525  B1354124    0.60    0.70    0.70
 20060913  0534  B1344478    0.50    0.50    0.50
 20060914  0520  B1354226    0.70    0.70    0.70
 20060915  0529  B1344459    0.40    0.50    0.50
 20060916  0532  B1344469    0.50    0.40    0.50
 20060916  1732  B1354106    0.50    0.60    0.60
 20060917  0527  B1354210    0.70    0.70    0.70
 20060918  0533  B1354087    0.60    0.60    0.60
 20060919  0526  B1354097    0.70    0.50    0.60
 20060920  0516  B1344462    0.50    0.40    0.50
 20060920  1810  B1354536    0.70    0.70    0.70
 20060921  0534  B1354112    0.50    0.60    0.60
 20060921  1800  B1344502    0.40    0.40    0.40
 20060922  0525  B1354531    0.70    0.80    0.80
 20060922  1736  B1354541    0.70    0.70    0.70
 20060923  0519  B1354101    0.50    0.60    0.60
 20060923  1738  B1354576    0.70    0.50    0.70
 20060924  0536  B1354095    0.60    0.60    0.60
 20060925  0536  B1354098    0.60    0.60    0.60
 20060925  1755  B1354100    0.50    0.50    0.50
 20060926  0531  B1334691    0.70    0.70    0.70
 20060926  1742  B1354108    0.40    0.50    0.50

• Relative humidity scaled, by total column amount from MWR(rh)
• Surface dew point temperature(dp)

SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry

The output precision of the following variables was increased 20060928

alt  changed from 1m to 0.1m
dp   changed from 0.1degC to 0.01degC
pres changed from 0.1 hPa to 0.01 hPa
RH   changed from 1%RH to 0.01%RH
tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase in accuracy.  
Users are cautioned to continue to use their best scientific judgement when using these or 
any other data.

• Surface dew point temperature(dp)
• Dry-Bulb Temperature(tdry)
• Relative humidity scaled, by total column amount from MWR(rh)
• pressure at constant pressure surface(pres)
• altitude above sea levelaltunits(alt)

NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry

The output precision of the following variables was increased 20060929:

   alt	changed from 1m to 0.1m
   dp	changed from 0.1degC to 0.01degC
   pres changed from 0.1 hPa to 0.01 hPa
   RH	changed from 1%RH to 0.01%RH
   tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase
in accuracy.  Users are cautioned to continue to use their best scientific
judgement when using these or any other data.

• Relative humidity scaled, by total column amount from MWR(rh)
• Dry-Bulb Temperature(tdry)
• altitude above sea levelaltunits(alt)
• pressure at constant pressure surface(pres)
• Surface dew point temperature(dp)

SGP/MFR25M/C1 - Intermittent small time stamp error

The internal code that runs the MFR data logger had a bug that occasionally caused the 
time stamp associated with the data to be slightly in error.  This error is thought to be 
very small (say less than 30 seconds) and very infrequent.  (Unfortunately, we cannot give 
firm estimates of the magnitude and frequency of the error).

Also, the upwelling MFR measurements were contaminated by electrical noise originating 
from the heater contained in the sensor head.  During the time the sensor head was polled by 
the data logger, the heater would strobe "on and off", and the noise caused by this 
strobing could greatly contaminate the data.  Some of the data is so contaminated that it is 
virtually useless.   

After 96/03/27 these problems were corrected.  Those who use the data before this time 
should realize that the time stamp for each record of data might be slightly in error, and 
the data could be very noisy due to the heater switching on and off.

• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Time offset of tweaks from base_time(time_offset)
• Data Logger Supply Voltage(logger_volt)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• Detector Temperature(head_temp)
• Time offset from base_time(base_time)

• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Data Logger Supply Voltage(logger_volt)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• Time offset from base_time(base_time)
• Detector Temperature(head_temp)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Time offset of tweaks from base_time(time_offset)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

SGP/MFR25M/C1 - poor data quality

In the middle of August, the logger board that collects data from the 25m MFR was 
upgraded.  This upgrade did not work out as planned, and the data quality from the MFR are not 
good.  The poor data is easily identifiable - you'll know it when you see it.  After 
19961008, a new logger board was installed that solved the problem. 

Note: the exact date when these problems started is not known with precision; it could be 
several days prior to or after 960822.

• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3)
• Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
  GNDMFR(up_hemisp_broadband)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5)
• 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

SGP/MFRSR/E13 - shading problems

The E13 MFRSR developed a shading problem on or about 98/05/04.  (The exact date when this 
problem started is difficult to pin down exactly.) The shading problem is easy to 
identify on a clear day because plots of direct beam and diffuse irradiance versus time become 
"fuzzy".  The total irradiance is not affected.
  

In response to the shading problem, a whole sequence of events then ensued: these actions 
were designed to solve the shading problem but did not succeed until the very end.

Here's a rundown of what took place:

98/05/11 - shadowband adjustment was made at 1544 GMT
         - this adjustment corrected the shading problem that 
           occurred in the morning, but inadvertently caused
           a PM shading problem 
98/05/20 - shadowband adjustment at 1804 GMT
98/05/21 - shadowband adjustment at 1630 GMT
98/06/01 - shadowband adjustment at 1910 GMT
98/06/02 - shadowband adjustmnet at 1550 GMT

Alas, these adjustments did not solve the shading problem and
it seemed to get worse (for example, on 98/06/11 the shading 
is VERY BAD from sunup until about 1500 LST).

98/06/16 - shadowband adjustment at 1715 GMT

This final adjustment seems to a solved the problem!

• extraterrestrial spectral irradiance used for optical depth calculations,
  corrected for eccentricity of earth\'s orbit(io_filter2)
• total optical depth direct narrowband filter 3(total_optical_depth_filter3)
• totaloptical depth direct narrowband filter 2(total_optical_depth_filter2)
• angstrom exponent(angstrom_exponent)
• aerosol optical depth filter 1(aerosol_optical_depth_filter1)
• aerosol optical depth filter 2(aerosol_optical_depth_filter2)
• aerosol optical depth filter 3(aerosol_optical_depth_filter3)
• total optical depth direct narrowband filter 5(total_optical_depth_filter5)
• aerosol optical depth filter 5(aerosol_optical_depth_filter5)
• total optical depth direct narrowband filter 4(total_optical_depth_filter4)
• 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_filter4)
• 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_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_filter1)

• Narrowband Diffuse Hemispheric Irradiance, Filter 6, offset and cosine corrected(diffuse_hemisp_narrowband_filter6)
• Direct Normal Broadband Irradiance, cosine corrected, broadband scale applied(direct_normal_broadband)
• 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 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 Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
• Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
• 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 4, cosine corrected(direct_normal_narrowband_filter4)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Narrowband Diffuse Hemispheric Irradiance, Filter 2, offset and cosine corrected(diffuse_hemisp_narrowband_filter2)
• Narrowband Diffuse Hemispheric Irradiance, Filter 1, offset and cosine corrected(diffuse_hemisp_narrowband_filter1)

• Narrowband Direct Normal Irradiance, Filter 4, cosine corrected(direct_normal_narrowband_filter4)
• Narrowband Direct Normal Irradiance, Filter 5, cosine corrected(direct_normal_narrowband_filter5)
• Narrowband Diffuse Hemispheric Irradiance, Filter 4, offset and cosine corrected(diffuse_hemisp_narrowband_filter4)
• Narrowband Direct Normal Irradiance, Filter 6, cosine corrected(direct_normal_narrowband_filter6)
• 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)
• Narrowband Direct Normal Irradiance, Filter 3, cosine corrected(direct_normal_narrowband_filter3)
• Narrowband Direct Normal Irradiance, Filter 2, cosine corrected(direct_normal_narrowband_filter2)
• Narrowband Direct Normal Irradiance, Filter 1, cosine corrected(direct_normal_narrowband_filter1)
• 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 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)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)

• rejected points for the final fit for the Direct Narrowband Filter1(michalsky_rejected_filter1)
• rejected points for the final fit for the Direct Broadband(barnard_rejected_broadband)
• log(irradiance) for the Direct Narrowband Filter6(barnard_lnI_filter6)
• log(irradiance) for the Direct Broadband(barnard_lnI_broadband)
• rejected points for the final fit for the Direct Narrowband Filter6(barnard_rejected_filter6)
• log(irradiance) for the Direct Narrowband Filter2(barnard_lnI_filter2)
• log(irradiance) for the Direct Narrowband Filter3(barnard_lnI_filter3)
• log(irradiance) for the Direct Narrowband Filter1(michalsky_lnI_filter1)
• log(irradiance) for the Direct Narrowband Filter5(barnard_lnI_filter5)
• log(irradiance) for the Direct Narrowband Filter3(michalsky_lnI_filter3)
• rejected points for the final fit for the Direct Narrowband Filter2(barnard_rejected_filter2)
• log(irradiance) for the Direct Broadband(michalsky_lnI_broadband)
• log(irradiance) for the Direct Narrowband Filter4(barnard_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter4(michalsky_lnI_filter4)
• log(irradiance) for the Direct Narrowband Filter6(michalsky_lnI_filter6)
• 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)
• rejected points for the final fit for the Direct Narrowband Filter5(michalsky_rejected_filter5)
• log(irradiance) for the Direct Narrowband Filter1(barnard_lnI_filter1)
• rejected points for the final fit for the Direct Narrowband Filter6(michalsky_rejected_filter6)
• rejected points for the final fit for the Direct Narrowband Filter5(barnard_rejected_filter5)
• log(irradiance) for the Direct Narrowband Filter5(michalsky_lnI_filter5)
• rejected points for the final fit for the Direct Narrowband Filter2(michalsky_rejected_filter2)
• rejected points for the final fit for the Direct Narrowband Filter4(michalsky_rejected_filter4)
• rejected points for the final fit for the Direct Broadband(michalsky_rejected_broadband)
• rejected points for the final fit for the Direct Narrowband Filter3(michalsky_rejected_filter3)

• number of points used in final linear fit for the Direct Broadband(michalsky_number_points_broadband)
• rejection flag for Direct Narrowband Filter4(michalsky_badflag_filter4)
• standard deviation around regression line for the Direct Narrowband Filter4(michalsky_standard_deviation_filter4)
• rejection flag for Direct Narrowband Filter1(michalsky_badflag_filter1)
• error in final linear fit for the Direct Narrowband Filter4(barnard_error_fit_filter4)
• standard deviation around regression line for the Direct Narrowband Filter5(michalsky_standard_deviation_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter1(michalsky_number_points_filter1)
• rejection flag for Direct Narrowband Filter6(barnard_badflag_filter6)
• standard deviation around regression line for the Direct Narrowband Filter3(michalsky_standard_deviation_filter3)
• optical depth for the Direct Narrowband Filter4(barnard_optical_depth_filter4)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(barnard_good_fraction_filter1)
• percentage of initial points used in final linear fit for the Direct Broadband(barnard_good_fraction_broadband)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter1(michalsky_good_fraction_filter1)
• rejection flag for Direct Narrowband Filter5(barnard_badflag_filter5)
• rejection flag for Direct Narrowband Filter5(michalsky_badflag_filter5)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter3(barnard_good_fraction_filter3)
• 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 Filter6(michalsky_number_points_filter6)
• number of points used in final linear fit for the Direct Narrowband Filter3(barnard_number_points_filter3)
• rejection flag for Direct Broadband(barnard_badflag_broadband)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter5(barnard_good_fraction_filter5)
• optical depth for the Direct Narrowband Filter6(barnard_optical_depth_filter6)
• error in final linear fit for the Direct Narrowband Filter5(barnard_error_fit_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter3(michalsky_number_points_filter3)
• 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 Broadband(barnard_number_points_broadband)
• optical depth for the Direct Narrowband Filter3(michalsky_optical_depth_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter2(michalsky_number_points_filter2)
• rejection flag for Direct Narrowband Filter1(barnard_badflag_filter1)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter2(michalsky_good_fraction_filter2)
• error in final linear fit for the Direct Narrowband Filter6(barnard_error_fit_filter6)
• 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
  Filter2(barnard_good_fraction_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(michalsky_good_fraction_filter6)
• percentage of initial points used in final linear fit for the Direct Broadband(michalsky_good_fraction_broadband)
• optical depth for the Direct BroadBand(michalsky_optical_depth_broadband)
• optical depth for the Direct Narrowband Filter2(michalsky_optical_depth_filter2)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter4(michalsky_good_fraction_filter4)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter6(barnard_error_slope_filter6)
• optical depth for the Direct Narrowband Filter4(michalsky_optical_depth_filter4)
• rejection flag for Direct Narrowband Filter6(michalsky_badflag_filter6)
• optical depth for the Direct Narrowband Filter5(barnard_optical_depth_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter5(barnard_number_points_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter6(barnard_number_points_filter6)
• percentage of initial points used in final linear fit for the Direct Narrowband
  Filter6(barnard_good_fraction_filter6)
• optical depth for the Direct Narrowband Filter1(michalsky_optical_depth_filter1)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter2(barnard_error_slope_filter2)
• optical depth for the Direct Narrowband Filter6(michalsky_optical_depth_filter6)
• error in final linear fit for the Direct BroadBand(barnard_error_fit_broadband)
• 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 Narrowband
  Filter4(barnard_good_fraction_filter4)
• standard deviation around regression line for the Direct Narrowband Filter6(michalsky_standard_deviation_filter6)
• number of points used in final linear fit for the Direct Narrowband Filter4(michalsky_number_points_filter4)
• rejection flag for Direct Narrowband Filter3(michalsky_badflag_filter3)
• Angstrom exponent(michalsky_angstrom_exponent)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter5(barnard_error_slope_filter5)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter3(barnard_error_slope_filter3)
• rejection flag for Direct Narrowband Filter2(barnard_badflag_filter2)
• rejection flag for Direct Broadband(michalsky_badflag_broadband)
• optical depth for the Direct Narrowband Filter1(barnard_optical_depth_filter1)
• error in final linear fit for the Direct Narrowband Filter2(barnard_error_fit_filter2)
• number of points used in final linear fit for the Direct Narrowband Filter4(barnard_number_points_filter4)
• Angstrom exponent(barnard_angstrom_exponent)
• standard deviation around regression line for the Direct BroadBand(michalsky_standard_deviation_broadband)
• number of points used in final linear fit for the Direct Narrowband Filter1(barnard_number_points_filter1)
• optical depth for the Direct Narrowband Filter2(barnard_optical_depth_filter2)
• rejection flag for Direct Narrowband Filter2(michalsky_badflag_filter2)
• error in final linear fit for the Direct Narrowband Filter3(barnard_error_fit_filter3)
• number of points used in final linear fit for the Direct Narrowband Filter5(michalsky_number_points_filter5)
• rejection flag for Direct Narrowband Filter3(barnard_badflag_filter3)
• error in optical depth (slope) of final linear fit for the Direct Broadband(barnard_error_slope_broadband)
• optical depth for the Direct BroadBand(barnard_optical_depth_broadband)
• rejection flag for Direct Narrowband Filter4(barnard_badflag_filter4)
• standard deviation around regression line for the Direct Narrowband Filter1(michalsky_standard_deviation_filter1)
• error in final linear fit for the Direct Narrowband Filter1(barnard_error_fit_filter1)
• optical depth for the Direct Narrowband Filter5(michalsky_optical_depth_filter5)
• number of points used in final linear fit for the Direct Narrowband Filter2(barnard_number_points_filter2)
• error in optical depth (slope) of final linear fit for the Direct Narrowband
  Filter1(barnard_error_slope_filter1)
• optical depth for the Direct Narrowband Filter3(barnard_optical_depth_filter3)

SGP/MFR10M/C1 - Head heater not working

On 19990415, the tower upon which the 10-m MFR was mounted was dismantled and replaced 
with a so-called "tippy tower".  After the 10-m MFR was reinstalled on the new tower, the 
mfr head heater did not work, or worked intermittently (at best).  A new mfr head was 
installed on 99.09.02 and that solved the problem.  

Data was collected from the old head in the morning up to the time it was replaced.  Once 
the new head was installed, data collection resumed.  There's a gap of about an hour 
between the time the old head was removed and the new head was installed.  If we try to gauge 
how well the old head was calibrated by comparing the two segments of data (old head, 
new head) it appears as if the old head remained in a good state of calibration even though 
the head heater was not working.

• Detector Temperature(head_temp)

• Detector Temperature(head_temp)