Data Quality Reports for Session: 103475 User: delane Completed: 01/03/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020723.3SHEBA/GNDMFR: Drop in signalshbgndmfrC1.a0, shbgndmfrC1.a1, shbgndmfrC1.b1
D020724.12SHEBA/GNDRAD/GNDMFR - Surface viewed by sensors is occasionally shadedshbgndmfrC1.a0, shbgndmfrC1.a1, shbgndmfrC1.b1, shbgndrad60sC1.a1, shbgndrad60sC1.b1
D020724.14SHEBA/GNDRAD/GNDMFR - Stand and instruments relocatedshbgndmfrC1.a0, shbgndmfrC1.a1, shbgndmfrC1.b1, shbgndrad60sC1.a1, shbgndrad60sC1.b1


DQRID : D020723.3
Start DateStart TimeEnd DateEnd Time
04/03/1998183004/03/19981900
04/20/1998013004/20/19980200
04/29/1998082004/29/19980840
05/05/1998213005/05/19982359
05/12/1998000005/12/19980900
05/15/1998183005/15/19981930
05/28/1998043005/28/19980530
05/29/1998183005/29/19981930
06/03/1998200006/03/19982100
06/24/1998020006/24/19980300
07/02/1998180007/02/19982000
07/04/1998190007/04/19982000
07/05/1998220007/05/19982230
07/16/1998134507/16/19981445
07/23/1998080007/23/19980845
07/24/1998180007/24/19982359
07/27/1998153007/27/19981630
07/30/1998063007/30/19980730
07/31/1998010007/31/19980400
08/02/1998024008/02/19980500
08/04/1998233008/05/19980100
08/07/1998040008/07/19980630
08/10/1998223008/11/19980900
08/12/1998153008/12/19981830
08/17/1998160008/17/19981700
08/20/1998173008/20/19981830
09/11/1998014509/11/19980215
09/12/1998233009/13/19980030
09/19/1998061009/19/19980630
09/19/1998123009/19/19981700
09/22/1998030009/22/19980400
Subject:
SHEBA/GNDMFR: Drop in signal
DataStreams:shbgndmfrC1.a0, shbgndmfrC1.a1, shbgndmfrC1.b1
Description:
Drop in signal, accompanied by changes in detector temperature and voltage. Data is bad 
during these periods.
Measurements:shbgndmfrC1.a1:
  • Time offset of tweaks from base_time(time_offset)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • north latitude for all the input platforms.(lat)
  • Time offset from base_time(base_time)
  • altitude above sea levelaltunits(alt)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • Source of raw data values for time step(raw_file)
  • Data Logger Supply Voltage(logger_volt)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Detector Temperature(mfr_temp)
  • east longitude for all the input platforms.(lon)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
shbgndmfrC1.b1:
  • Data Logger Supply Voltage(logger_volt)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Detector Temperature(mfr_temp)
  • Time offset from base_time(base_time)
  • east longitude for all the input platforms.(lon)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Source of raw data values for time step(raw_file)
  • Time offset of tweaks from base_time(time_offset)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
shbgndmfrC1.a0:
  • Source of raw data values for time step(raw_file)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Data Logger Supply Voltage(logger_volt)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Time offset from base_time(base_time)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Detector Temperature(mfr_temp)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)

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DQRID : D020724.12
Start DateStart TimeEnd DateEnd Time
05/01/1998000006/24/19980000
Subject:
SHEBA/GNDRAD/GNDMFR - Surface viewed by sensors is occasionally shaded
DataStreams:shbgndmfrC1.a0, shbgndmfrC1.a1, shbgndmfrC1.b1, shbgndrad60sC1.a1, shbgndrad60sC1.b1
Description:
The shadow of the Des Grosseillers and other pieces of equipment cause the area underneath 
the GNDRAD stand to be shaded sometimes between the hours of 10 and 21 GMT. On 05/24/98 
an operator reported: "Between about 10:15 and 10:45 the shadow of the Des Groseilliers 
falls over the GNDRAD stand and instruments. The operator used to service the GNDRAD after 
servicing the SKYRAD near solar noon.  However, because access to the GNDRAD is from the 
south, this placed his shadow beneath the instruments which was readily apparent in the 
data. The operator altered his schedule to service the GNDRAD either early in the morning 
or late at night when he would not significantly shade the sensed surface." Another 
operators report on 05/23/98 noted that, for the NET, during the time from 10 GMT to 21 GMT, 
"The shadows of the legs of the groundstand consecutively pass through the snow directly 
in the middle of the stand at these times. " Other example of shading can be seen on 
06/14/98.A full report on shadowing would need to be derived from a variety of 
instrumentation under clear skies.
Measurements:shbgndrad60sC1.b1:
  • PIR1 unshaded mean(pir1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • IRT1 mean(irt1_mean)
  • IRT1 minimum(irt1_min)
  • east longitude for all the input platforms.(lon)
  • altitude above sea levelaltunits(alt)
  • north latitude for all the input platforms.(lat)
  • Net Radiation, Minima(net_min)
  • NET mean(net_mean)
  • PSP1 unshaded standard deviation(psp1_sd)
  • IRT1 standard deviation(irt1_sd)
  • Time offset from base_time(base_time)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Net Radiation, Maxima(net_max)
  • PIR1 unshaded minimum(pir1_min)
  • Time offset of tweaks from base_time(time_offset)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded maximum(psp1_max)
  • Bit data. See details.(bit_data)
  • External voltage(external_voltage)
  • Internal voltage(internal_voltage)
  • NET standard deviation(net_sd)
  • PSP1 unshaded mean(psp1_mean)
  • GPS raw data filename(filename)
  • IRT1 maximum(irt1_max)
  • Internal Logger Temperature(logger_temp)
shbgndmfrC1.a1:
  • Time offset of tweaks from base_time(time_offset)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • altitude above sea levelaltunits(alt)
  • Source of raw data values for time step(raw_file)
  • Data Logger Supply Voltage(logger_volt)
  • north latitude for all the input platforms.(lat)
  • Time offset from base_time(base_time)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Detector Temperature(mfr_temp)
  • east longitude for all the input platforms.(lon)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
shbgndmfrC1.b1:
  • Data Logger Supply Voltage(logger_volt)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Detector Temperature(mfr_temp)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Source of raw data values for time step(raw_file)
  • Time offset of tweaks from base_time(time_offset)
  • altitude above sea levelaltunits(alt)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • Time offset from base_time(base_time)
  • east longitude for all the input platforms.(lon)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • north latitude for all the input platforms.(lat)
shbgndrad60sC1.a1:
  • PSP1 unshaded minimum(psp1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded maximum(psp1_max)
  • Bit data. See details.(bit_data)
  • Time offset of tweaks from base_time(time_offset)
  • PSP1 unshaded mean(psp1_mean)
  • IRT1 maximum(irt1_max)
  • PIR1 unshaded minimum(pir1_min)
  • north latitude for all the input platforms.(lat)
  • PSP1 unshaded standard deviation(psp1_sd)
  • External voltage(external_voltage)
  • east longitude for all the input platforms.(lon)
  • IRT1 minimum(irt1_min)
  • NET mean(net_mean)
  • PIR1 unshaded mean(pir1_mean)
  • GPS raw data filename(filename)
  • IRT1 mean(irt1_mean)
  • Time offset from base_time(base_time)
  • IRT1 standard deviation(irt1_sd)
  • PIR1 unshaded standard deviation(pir1_sd)
  • altitude above sea levelaltunits(alt)
  • Internal voltage(internal_voltage)
  • Internal Logger Temperature(logger_temp)
  • Net Radiation, Minima(net_min)
  • NET standard deviation(net_sd)
  • Net Radiation, Maxima(net_max)
shbgndmfrC1.a0:
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Data Logger Supply Voltage(logger_volt)
  • Time offset from base_time(base_time)
  • east longitude for all the input platforms.(lon)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • Source of raw data values for time step(raw_file)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Detector Temperature(mfr_temp)

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DQRID : D020724.14
Start DateStart TimeEnd DateEnd Time
06/24/1998160006/25/19980030
Subject:
SHEBA/GNDRAD/GNDMFR - Stand and instruments relocated
DataStreams:shbgndmfrC1.a0, shbgndmfrC1.a1, shbgndmfrC1.b1, shbgndrad60sC1.a1, shbgndrad60sC1.b1
Description:
The ARM operators report: "The GNDRAD stand and instruments were relocated to a hummock in 
the center of a large piece of multi-year ice to the east of the SKYRAD stand.  This was 
necessary because the former location was on first-year ice that would have 
disintegrated from the turbulence if the ship's propellers were engaged.  It also should eliminate 
the shadowing from the ship.  The data loggers and power supplies and crossbars that 
supported them were removed from the legs of the stand and placed on 2x4s on ablation shields 
on the ice to minimize the shadows beneath the instrumentation. The snow in the vicinity 
of the GNDRAD is considerably disturbed from the move, however it is very thin (2 cm) and 
should melt soon."
Measurements:shbgndrad60sC1.b1:
  • PIR1 unshaded mean(pir1_mean)
  • PSP1 unshaded minimum(psp1_min)
  • IRT1 mean(irt1_mean)
  • IRT1 minimum(irt1_min)
  • east longitude for all the input platforms.(lon)
  • altitude above sea levelaltunits(alt)
  • north latitude for all the input platforms.(lat)
  • Net Radiation, Minima(net_min)
  • NET mean(net_mean)
  • PSP1 unshaded standard deviation(psp1_sd)
  • IRT1 standard deviation(irt1_sd)
  • Time offset from base_time(base_time)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Net Radiation, Maxima(net_max)
  • PIR1 unshaded minimum(pir1_min)
  • Time offset of tweaks from base_time(time_offset)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded maximum(psp1_max)
  • Bit data. See details.(bit_data)
  • External voltage(external_voltage)
  • Internal voltage(internal_voltage)
  • NET standard deviation(net_sd)
  • PSP1 unshaded mean(psp1_mean)
  • GPS raw data filename(filename)
  • IRT1 maximum(irt1_max)
  • Internal Logger Temperature(logger_temp)
shbgndmfrC1.a1:
  • Time offset of tweaks from base_time(time_offset)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • altitude above sea levelaltunits(alt)
  • Source of raw data values for time step(raw_file)
  • Data Logger Supply Voltage(logger_volt)
  • north latitude for all the input platforms.(lat)
  • Time offset from base_time(base_time)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Detector Temperature(mfr_temp)
  • east longitude for all the input platforms.(lon)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
shbgndmfrC1.b1:
  • Data Logger Supply Voltage(logger_volt)
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Detector Temperature(mfr_temp)
  • Fields flagged by callang: 0 = no flag\n,(callang_flags)
  • Source of raw data values for time step(raw_file)
  • Time offset of tweaks from base_time(time_offset)
  • altitude above sea levelaltunits(alt)
  • Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
  • Time offset from base_time(base_time)
  • east longitude for all the input platforms.(lon)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • north latitude for all the input platforms.(lat)
shbgndrad60sC1.a1:
  • PSP1 unshaded minimum(psp1_min)
  • PIR1 unshaded maximum(pir1_max)
  • PSP1 unshaded maximum(psp1_max)
  • Bit data. See details.(bit_data)
  • Time offset of tweaks from base_time(time_offset)
  • PSP1 unshaded mean(psp1_mean)
  • IRT1 maximum(irt1_max)
  • PIR1 unshaded minimum(pir1_min)
  • north latitude for all the input platforms.(lat)
  • PSP1 unshaded standard deviation(psp1_sd)
  • External voltage(external_voltage)
  • east longitude for all the input platforms.(lon)
  • IRT1 minimum(irt1_min)
  • NET mean(net_mean)
  • PIR1 unshaded mean(pir1_mean)
  • GPS raw data filename(filename)
  • IRT1 mean(irt1_mean)
  • Time offset from base_time(base_time)
  • IRT1 standard deviation(irt1_sd)
  • PIR1 unshaded standard deviation(pir1_sd)
  • altitude above sea levelaltunits(alt)
  • Internal voltage(internal_voltage)
  • Internal Logger Temperature(logger_temp)
  • Net Radiation, Minima(net_min)
  • NET standard deviation(net_sd)
  • Net Radiation, Maxima(net_max)
shbgndmfrC1.a0:
  • Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector,
    GNDMFR(up_hemisp_broadband)
  • Data Logger Supply Voltage(logger_volt)
  • Time offset from base_time(base_time)
  • east longitude for all the input platforms.(lon)
  • Upwelling Hemispheric Irradiance, GNDMFR(up_hemisp_narrowband)
  • Source of raw data values for time step(raw_file)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Detector Temperature(mfr_temp)

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END OF DATA