DQRs for Session: 142530 User:kcwangCompleted: 05-22-2012

Data Quality Reports for Session: 142530 User: kcwang Completed: 05/22/2012

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D120416.9	SGP/QCRAD/E2 - Missing surface met data	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2
D120417.10	SGP/QCRAD/E2 - Tracker inoperative	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
D120417.11	SGP/QCRAD/E2 - Possible calibration error	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
D120510.12	SGP/QCRAD/E2 - Tc/Td values low	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
D120510.13	SGP/QCRAD/E2 - Tc/Td values are zero	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
D120510.14	SGP/QCRAD/E2 - intermittent Tc/Td strange values	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2

DQRID : D120416.9

Start Date	Start Time	End Date	End Time
01/01/1996	0000	11/07/1997	0100

Subject:	SGP/QCRAD/E2 - Missing surface met data
DataStreams:	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2
Description:	Surface meteorological data were missing during these time periods. Met data is used in a variety of quality control checks described below. Air temperature data is needed for tests on LW up and LW down pyrgeometer case and dome temperatures, and tests on the irradiances from upwelling LW/SW and downwelling LW. The Rayleigh limit diffuse radiation test is based on surface pressure. There were no instrument DQRs on this problem at the time this report was submitted.
Measurements:	sgpqcrad1longE2.c1: LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Pressure, atmospheric, surface, 60-min avg(press) wind_direction Wind speed, at 10 meters height(wind_speed) Temp_Air LWdnTc Precipitation, total(precip) Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) Humidity, relative(rh) LWupTd LWupTc Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sgpqcrad1longE2.c2: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Wind speed, at 10 meters height(wind_speed) Precipitation, total(precip) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp) LWupTd Humidity, relative(rh) Pressure, atmospheric, surface, 60-min avg(press) LWupTc LWdnTc LWdnTd Temp_Air wind_direction Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

Back To Table of Contents

DQRID : D120417.10

Start Date	Start Time	End Date	End Time
02/20/1997	0000	03/06/1997	1500

Subject:	SGP/QCRAD/E2 - Tracker inoperative
DataStreams:	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
Description:	Solar tracker inoperative. Described in instrument DQR D970310.1. From about 97/02/20 to 97/03/06 (1500 GMT) the solar tracker was inoperative at site E2. We cannot pin down the exact starting time of this failure because of cloudy conditions around 97/02/20. The failure becomes obvious during clear skis at which time the NIP reads zero (i.e., it isn't pointed at the sun) and the downward diffuse radiation is too large (because the diffuse pyranometer is not being shaded). 97/03/03 was a particularly clear day and the diffuse pyranometer reads almost the same as the total downward pyranometer. The fact that they don't read exactly the same - the discrepency is about 75 W/m^2 at solar noon - is indicative of a large sensor calibration problem. This large calibration error is NOT typical of ARM data, rather it is peculiar to this site.
Measurements:	sgpqcrad1longE2.s1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) sgpqcrad1longE2.s2: Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sgpqcrad1longE2.c1: Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sgpqcrad1longE2.c2: Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

Back To Table of Contents

DQRID : D120417.11

Start Date	Start Time	End Date	End Time
08/01/1996	0000	03/10/1997	0000

Subject:	SGP/QCRAD/E2 - Possible calibration error
DataStreams:	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
Description:	Either the downwelling shortwave or the shortwave diffuse radiometer appears to have a large calibration error. This also impacts the best estimate data. It is not clear when this problem started or was fixed, so the dates in this DQR may not fully describe the problem. Described in instrument DQR D970310.1. 97/03/03 was a particularly clear day and the diffuse pyranometer reads almost the same as the total downward pyranometer. The fact that they don't read exactly the same - the discrepency is about 75 W/m^2 at solar noon - is indicative of a large sensor calibration problem. This large calibration error is NOT typical of ARM data, rather it is peculiar to this site.
Measurements:	sgpqcrad1longE2.s1: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sgpqcrad1longE2.s2: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) sgpqcrad1longE2.c1: Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) sgpqcrad1longE2.c2: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp) Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)

Back To Table of Contents

DQRID : D120510.12

Start Date	Start Time	End Date	End Time
08/22/1996	1300	09/06/1996	1500

Subject:	SGP/QCRAD/E2 - Tc/Td values low
DataStreams:	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
Description:	Case and dome temperatures for Longwave fluxes appear to be low during this period, and long wave fluxes also appear to be incorrect. No instrument DQRs exist documenting this problem.
Measurements:	sgpqcrad1longE2.s1: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) LWupTc LWupTd LWdnTc LWdnTd sgpqcrad1longE2.s2: LWupTc LWupTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) LWdnTc LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) sgpqcrad1longE2.c1: LWdnTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) LWdnTc LWupTd LWupTc sgpqcrad1longE2.c2: LWupTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) LWupTc LWdnTc LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

Back To Table of Contents

DQRID : D120510.13

Start Date	Start Time	End Date	End Time
07/04/1997	1900	08/07/1997	1800

Subject:	SGP/QCRAD/E2 - Tc/Td values are zero
DataStreams:	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
Description:	Case and dome temperatures for Longwave fluxes are zero during this period meaning not all checks can be performed on the longwave fluxes. No instrument DQRs exist documenting this problem.
Measurements:	sgpqcrad1longE2.s1: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) LWupTc LWupTd LWdnTc LWdnTd sgpqcrad1longE2.s2: LWupTc LWupTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) LWdnTc LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) sgpqcrad1longE2.c1: LWdnTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) LWdnTc LWupTd LWupTc sgpqcrad1longE2.c2: LWupTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) LWupTc LWdnTc LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

Back To Table of Contents

DQRID : D120510.14

Start Date	Start Time	End Date	End Time
08/19/2001	0000	09/27/2001	1500

Subject:	SGP/QCRAD/E2 - intermittent Tc/Td strange values
DataStreams:	sgpqcrad1longE2.c1, sgpqcrad1longE2.c2, sgpqcrad1longE2.s1, sgpqcrad1longE2.s2
Description:	Case and dome temperatures for Longwave fluxes appear strangely high during this period corresponding to possibly incorrect values in the longwave fluxes. No instrument DQRs exist documenting this problem.
Measurements:	sgpqcrad1longE2.s1: Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) LWupTc LWupTd LWdnTc LWdnTd sgpqcrad1longE2.s2: LWupTc LWupTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) LWdnTc LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) sgpqcrad1longE2.c1: LWdnTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp) LWdnTc LWupTd LWupTc sgpqcrad1longE2.c2: LWupTd Irradiance, longwave, downwelling, hemispheric(down_long_hemisp) LWupTc LWdnTc LWdnTd Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)

Back To Table of Contents

END OF DATA