DQRs for Session: 119417 User:marc1lindeCompleted: 05-05-2009

Data Quality Reports for Session: 119417 User: marc1linde Completed: 05/05/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D080703.3	SGP/MFRSR/C1 - Incorrect alltime units	sgpmfrsrC1.b1
D960914.17	SGP/MFR10m/C1 - Small intermittent time stamp error	sgpmfr10mC1.a0, sgpmfr10mC1.b1
D960914.18	SGP/MFR25M/C1 - Intermittent small time stamp error	sgpmfr25mC1.a0, sgpmfr25mC1.b1

DQRID : D080703.3

Start Date	Start Time	End Date	End Time
01/08/1997	0000	07/08/2008	2359

Subject:	SGP/MFRSR/C1 - Incorrect alltime units
DataStreams:	sgpmfrsrC1.b1
Description:	Units of alltime_hemisp_broadband and alltime_hemisp_narrowband_filter(N) are incorrect. They should be counts. A low priority reprocessing task has been submitted to correct this metadata error.
Measurements:	sgpmfrsrC1.b1: Alltime Narrowband Hemispheric Irradiance, Filter 6(alltime_hemisp_narrowband_filter6) Alltime Narrowband Hemispheric Irradiance, Filter 2(alltime_hemisp_narrowband_filter2) Alltime Narrowband Hemispheric Irradiance, Filter 4(alltime_hemisp_narrowband_filter4) Alltime Hemispheric Broadband Irradiance(alltime_hemisp_broadband) Alltime Narrowband Hemispheric Irradiance, Filter 5(alltime_hemisp_narrowband_filter5) Alltime Narrowband Hemispheric Irradiance, Filter 1(alltime_hemisp_narrowband_filter1) Alltime Narrowband Hemispheric Irradiance, Filter 3(alltime_hemisp_narrowband_filter3)

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DQRID : D960914.17

Start Date	Start Time	End Date	End Time
03/26/1994	0000	03/27/1996	2359

Subject:	SGP/MFR10m/C1 - Small intermittent time stamp error
DataStreams:	sgpmfr10mC1.a0, sgpmfr10mC1.b1
Description:	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.
Measurements:	sgpmfr10mC1.b1: 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2) Time offset of tweaks from base_time(time_offset) 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1) base time(base_time) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6) Detector Temperature(head_temp) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4) Cosine of Solar Zenith Angle(cosine_solar_zenith_angle) Fields flagged by callang: 0 = No Flag\n,(callang_flags) Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector, GNDMFR(up_hemisp_broadband) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3) Data Logger Supply Voltage(logger_volt) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5) sgpmfr10mC1.a0: 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 3(up_hemisp_narrowband_filter3) Broadband Upwelling Hemispheric Irradiance, Uncalibrated Silicon Detector, GNDMFR(up_hemisp_broadband) Time offset of tweaks from base_time(time_offset) Data Logger Supply Voltage(logger_volt) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2) base time(base_time) Detector Temperature(head_temp) Fields flagged by callang: 0 = No Flag\n,(callang_flags) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 5(up_hemisp_narrowband_filter5) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 6(up_hemisp_narrowband_filter6) 25 meter Upwelling Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 4(up_hemisp_narrowband_filter4)

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DQRID : D960914.18

Start Date	Start Time	End Date	End Time
03/23/1994	0000	03/27/1996	2359

Subject:	SGP/MFR25M/C1 - Intermittent small time stamp error
DataStreams:	sgpmfr25mC1.a0, sgpmfr25mC1.b1
Description:	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.
Measurements:	sgpmfr25mC1.b1: 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 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 Solar Zenith Angle(cosine_solar_zenith_angle) 25 meter Upwelling Narrowband Hemispheric Irradiance, Filter 2(up_hemisp_narrowband_filter2) Detector Temperature(head_temp) base time(base_time) sgpmfr25mC1.a0: 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) 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 Hemispheric Irradiance, Filter 1(up_hemisp_narrowband_filter1)

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