DQR ID | Subject | Data Streams Affected |
---|---|---|
D021213.1 | NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight | nsaskyrad60sC1.a1 |
D021213.3 | NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight | nsaskyrad60sC1.a1 |
D030510.2 | NSA/SKYRAD/C1 - IRT measurements during precipitation events | nsaskyrad60sC1.a1 |
D990108.2 | NSA/SKYRAD/C1 - IRT removed for repair | nsaskyrad60sC1.a1, nsaskyradC1.00 |
D990924.2 | NSA/SKYRAD/C1 - IRT insufficiently heated | nsaskyrad60sC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/1998 | 0000 | 08/10/1998 | 0000 |
Subject: | NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Around local midnight 9:30-10:30 GMT during summer clear sky the normal incidence pyranometer is shaded by the instrument stand.This causes the reading to be 0 W/m2. If cosine correction is applied for irradiance calulations this effect is negligible due to the low solar angle. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/1998 | 0000 | 08/10/1998 | 0000 |
Subject: | NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Just past local midnight (11:00-11:40 GMT during summer clear sky) the global hemispherical pyranometer is shaded by the MFRSR instrument for about 40 minutes. This causes the reading to be 0 W/m2. This effect would be negligible in a daily average due to the low solar angle. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/14/1998 | 2330 | 03/03/2003 | 2359 |
Subject: | NSA/SKYRAD/C1 - IRT measurements during precipitation events |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | The IRT measurement of sky/cloud temperature was in question during precipitation events because rain or snow could accumulate in the upward-pointed lens barrel. This was corrected by reorienting the IRT to measure the sky temperature as reflected by a gold mirror. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/16/1998 | 1900 | 10/28/1998 | 1300 |
Subject: | NSA/SKYRAD/C1 - IRT removed for repair |
DataStreams: | nsaskyrad60sC1.a1, nsaskyradC1.00 |
Description: | The instrument was damaged by internal water condensation caused by the exterior foam insulation used to keep the IRT above freezing. It was returned in July 1998 to the manufacturer for repair. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyradC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/14/1998 | 0130 | 12/21/2000 | 1925 |
Subject: | NSA/SKYRAD/C1 - IRT insufficiently heated |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | IRT had insufficient heating to maintain an internal reference temperature above 0 degrees C. Measurements of sky temperature were over-estimated when instrument was below freezing. |
Measurements: | nsaskyrad60sC1.a1:
|