DQR ID | Subject | Data Streams Affected |
---|---|---|
D021111.1 | NSA/SKYRAD/C1 - Unshaded PIR data unreasonable | nsaskyrad60sC1.a1 |
D021111.11 | NSA/SKYRAD/C1 - PIR data suspect | nsaskyrad60sC1.a1 |
D021111.14 | NSA/SKYRAD/C1 - Shaded PIR data unreasonable | nsaskyrad60sC1.a1 |
D021111.15 | NSA/SKYRAD/C1 - Corrupted Shaded PIR data | nsaskyrad60sC1.a1 |
D021111.16 | NSA/SKYRAD/C1 - Shaded PIR data unreasonable | nsaskyrad60sC1.a1 |
D021111.17 | NSA/SKYRAD/C1 - Unshaded and Shaded PIR data bad | nsaskyrad60sC1.a1 |
D021111.19 | NSA/SKYRAD/C1 - PIR data suspect | nsaskyrad60sC1.a1 |
D021111.2 | NSA/SKYRAD/C1 - Corrupted Unshaded PIR data | nsaskyrad60sC1.a1 |
D021111.21 | NSA/SKYRAD/C1 - Shaded PIR data suspect | nsaskyrad60sC1.a1 |
D021111.22 | NSA/SKYRAD/C1 - PIR data suspect | nsaskyrad60sC1.a1 |
D021111.23 | NSA/SKYRAD/C1 - Shaded PIR data incorrect | nsaskyrad60sC1.a1 |
D021111.3 | NSA/SKYRAD/C1 - Spikes in Unshaded PIR data | nsaskyrad60sC1.a1 |
D021111.4 | NSA/SKYRAD/C1 - Discontinuity in Unshaded PIR data | nsaskyrad60sC1.a1 |
D021111.5 | NSA/SKYRAD/C1 - Unshaded PIR data incorrect | nsaskyrad60sC1.a1 |
D021211.10 | NSA/GNDRAD/C1 - Unreasonable/missing PIR data due to maintenance | nsagndrad60sC1.a1 |
D021211.11 | NSA/GNDRAD/C1 - Noisy PIR Data | nsagndrad60sC1.a1 |
D021211.12 | NSA/GNDRAD/C1 - Noisy PIR Data | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021211.13 | NSA/GNDRAD/C1 - PIR1 Calibration problems resulted in small error | nsagndrad60sC1.a1 |
D021211.8 | NSA/GNDRAD/C1 - PIR offline | nsagndrad60sC1.a1 |
D021211.9 | NSA/GNDRAD/C1 - Instrument maintenance | nsagndrad60sC1.a1 |
D021212.10 | NSA/GNDRAD/C1 - Unreasonable PSP Data | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.5 | NSA/GNDRAD/C1 - Bad PSP calibrations applied | nsagndrad60sC1.a1 |
D021212.7 | NSA/GNDRAD/C1 - Data corrupted by brief spike | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.8 | NSA/GNDRAD/C1 - Rad instruments shaded by shelter | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
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 |
D981212.1 | NSA/SKYRAD - Barrow SKYRAD PIRD Misconfiguration 12/9 - 12/12/98 | nsaskyrad20sC1.a1, nsaskyrad60sC1.a1 |
D990108.2 | NSA/SKYRAD/C1 - IRT removed for repair | nsaskyradC1.00, nsaskyrad60sC1.a1 |
D990108.3 | NSA/SKYRAD/C1 - IRT insufficiently insulated | nsaskyradC1.00, nsaskyrad60sC1.a1 |
D990108.4 | NSA/SKYRAD/C1 - IRT insufficiently insulated | nsaskyradC1.00, nsaskyrad60sC1.a1 |
D990108.5 | NSA/SKYRAD/C1 - IRT removed from service | nsaskyradC1.00, nsaskyrad60sC1.a1 |
D990924.1 | NSA/GNDRAD/C1 - IRT insufficiently heated | nsagndrad60sC1.a1 |
D990924.2 | NSA/SKYRAD/C1 - IRT insufficiently heated | nsaskyrad60sC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/1999 | 2200 | 01/12/1999 | 2230 |
01/17/1999 | 0500 | 01/17/1999 | 0730 |
01/24/1999 | 1200 | 01/24/1999 | 1400 |
02/13/1999 | 0700 | 02/13/1999 | 2359 |
02/19/1999 | 0545 | 02/20/1999 | 1030 |
02/20/1999 | 2115 | 02/21/1999 | 0200 |
Subject: | NSA/SKYRAD/C1 - Unshaded PIR data unreasonable |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Periods of very large negative values. Negative readings of thermistors caused concurrent calculation in logger of temperature to fail. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/1998 | 0300 | 10/28/1998 | 0500 |
10/29/1998 | 0600 | 10/29/1998 | 0800 |
11/07/1998 | 0100 | 11/07/1998 | 0400 |
11/12/1998 | 0300 | 11/12/1998 | 1200 |
11/23/1998 | 0900 | 11/23/1998 | 2100 |
Subject: | NSA/SKYRAD/C1 - PIR data suspect |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | PIR shaded and PIR unshaded show unusual differences during this time period, frosting or icing is the most probable explanation but we don't know for sure. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/1999 | 2200 | 01/12/1999 | 2230 |
01/17/1999 | 0500 | 01/17/1999 | 0730 |
01/24/1999 | 1200 | 01/24/1999 | 1400 |
02/13/1999 | 0700 | 02/13/1999 | 2359 |
02/19/1999 | 0545 | 02/20/1999 | 1030 |
02/20/1999 | 2115 | 02/21/1999 | 0200 |
Subject: | NSA/SKYRAD/C1 - Shaded PIR data unreasonable |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Periods of very large negative values. Negative readings of thermistors causes concurrent calculation in logger of temperature to fail. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/18/1998 | 2105 | 11/18/1998 | 2110 |
11/20/1998 | 0340 | 11/20/1998 | 0350 |
11/20/1998 | 2010 | 11/20/1998 | 2020 |
11/24/1998 | 0330 | 11/24/1998 | 0340 |
11/25/1998 | 0145 | 11/25/1998 | 0150 |
11/25/1998 | 2030 | 11/25/1998 | 2035 |
11/26/1998 | 0300 | 11/26/1998 | 0310 |
11/26/1998 | 1530 | 11/26/1998 | 1540 |
11/27/1998 | 0110 | 11/27/1998 | 0120 |
11/27/1998 | 0840 | 11/27/1998 | 0850 |
11/27/1998 | 0925 | 11/27/1998 | 0935 |
11/27/1998 | 1940 | 11/27/1998 | 1950 |
11/28/1998 | 0655 | 11/28/1998 | 0705 |
11/29/1998 | 0450 | 11/29/1998 | 0505 |
11/29/1998 | 2335 | 11/29/1998 | 2350 |
Subject: | NSA/SKYRAD/C1 - Corrupted Shaded PIR data |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Erroneous data due to file truncation problem during logger download and corresponding ingest problems when the truncated lines were read. Problem was identified in a PIF submitted by Rune Storvold |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/1998 | 2225 | 12/11/1998 | 2235 |
12/15/1998 | 1800 | 12/15/1998 | 1810 |
12/16/1998 | 1810 | 12/16/1998 | 1815 |
02/16/1999 | 1945 | 02/16/1999 | 2010 |
02/17/1999 | 2145 | 02/17/1999 | 2200 |
03/02/1999 | 1825 | 03/02/1999 | 1835 |
03/09/1999 | 1830 | 03/09/1999 | 1840 |
03/10/1999 | 0340 | 03/10/1999 | 0350 |
Subject: | NSA/SKYRAD/C1 - Shaded PIR data unreasonable |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | There was a 10-25 W/m2 spike in data probably due to operator working around instrument or cleaning it. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/17/1999 | 1700 | 01/17/1999 | 1815 |
Subject: | NSA/SKYRAD/C1 - Unshaded and Shaded PIR data bad |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Large unreasonable spikes and some missing data points. Cause of problem unknown. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/1998 | 0300 | 10/28/1998 | 0500 |
10/29/1998 | 0600 | 10/29/1998 | 0800 |
11/07/1998 | 0100 | 11/07/1998 | 0400 |
11/12/1998 | 0300 | 11/12/1998 | 1200 |
11/23/1998 | 0900 | 11/23/1998 | 2100 |
Subject: | NSA/SKYRAD/C1 - PIR data suspect |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | PIR shaded and PIR unshaded show unusual differences during this time period, frosting or icing is one possible explanation but we don't know. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/1998 | 2000 | 11/14/1998 | 2005 |
11/18/1998 | 2105 | 11/18/1998 | 2110 |
11/20/1998 | 0340 | 11/20/1998 | 0350 |
11/20/1998 | 2010 | 11/20/1998 | 2020 |
11/24/1998 | 0330 | 11/24/1998 | 0340 |
11/25/1998 | 0145 | 11/25/1998 | 0150 |
11/25/1998 | 2030 | 11/25/1998 | 2035 |
11/26/1998 | 0300 | 11/26/1998 | 0310 |
11/26/1998 | 1530 | 11/26/1998 | 1540 |
11/27/1998 | 0110 | 11/27/1998 | 0120 |
11/27/1998 | 0840 | 11/27/1998 | 0850 |
11/27/1998 | 0925 | 11/27/1998 | 0935 |
11/27/1998 | 1940 | 11/27/1998 | 1950 |
11/28/1998 | 0655 | 11/28/1998 | 0705 |
11/29/1998 | 0450 | 11/29/1998 | 0505 |
11/29/1998 | 2335 | 11/29/1998 | 2350 |
Subject: | NSA/SKYRAD/C1 - Corrupted Unshaded PIR data |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Erroneous data due to file truncation problem during logger download and corresponding ingest problems when the truncated lines were read. Problem was identified in a PIF submitted by Rune Storvold |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/08/1998 | 0000 | 12/15/1998 | 1200 |
Subject: | NSA/SKYRAD/C1 - Shaded PIR data suspect |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | The instrument had incorrect calibration settings on two accounts: 1. From 12/09 to 12/12, the calibration was set incorrectly. 2. The dome correction coefficients were not properly set until the early morning of 12/14. The erroneous settings caused an error probably less than 4%. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/1998 | 0000 | 02/04/1999 | 2359 |
Subject: | NSA/SKYRAD/C1 - PIR data suspect |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | The PIR unshaded and the PIR shaded have a persistent offset between them, ranging from 0 to 10 W/m2. It is particularly apparent during clear sky. The line of sight of the PIRd is obstructed making it difficult to assess the problem. The instrument was moved to its proper location in early February. The problem seems to have resolved itself with the move. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/11/1999 | 0000 | 02/11/1999 | 2359 |
Subject: | NSA/SKYRAD/C1 - Shaded PIR data incorrect |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | There were two sudden increases (about 50-100 W/m2) at 23:00 and 24:00. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1998 | 2200 | 12/01/1998 | 2359 |
01/28/1999 | 0145 | 01/28/1999 | 0200 |
03/02/1999 | 1820 | 03/02/1999 | 1835 |
03/10/1999 | 1740 | 03/10/1999 | 1750 |
03/13/1999 | 1745 | 03/13/1999 | 1755 |
Subject: | NSA/SKYRAD/C1 - Spikes in Unshaded PIR data |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | There was a 10-25 W/m2 spike in data probably due to operator working around instrument or cleaning it. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/03/1999 | 2300 | 02/03/1999 | 2310 |
Subject: | NSA/SKYRAD/C1 - Discontinuity in Unshaded PIR data |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | There was a sudden increase in irradiance (from 140 to 190 W/m2) at 02/03/99 23:00. |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/08/1998 | 0000 | 12/10/1998 | 2359 |
Subject: | NSA/SKYRAD/C1 - Unshaded PIR data incorrect |
DataStreams: | nsaskyrad60sC1.a1 |
Description: | Data from this time period is incorrect because instrument was swapped out for calibration and correct calibrations were not entered for replacement. Some missing data during this time interval as well |
Measurements: | nsaskyrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/19/1999 | 1830 | 01/20/1999 | 2359 |
Subject: | NSA/GNDRAD/C1 - Unreasonable/missing PIR data due to maintenance |
DataStreams: | nsagndrad60sC1.a1 |
Description: | During this period, there are data gaps and the data that were collected are unreasonable. Instrument maintenance was being performed |
Measurements: | nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/1998 | 0000 | 02/28/1999 | 2359 |
Subject: | NSA/GNDRAD/C1 - Noisy PIR Data |
DataStreams: | nsagndrad60sC1.a1 |
Description: | During the period referenced, the ground PIR was noisy in comparison to the sky PIR data. At the end of November, the noise increased to roughly 10 W/m2 from peak to peak. After 12/23/98, the noise decreased in amplitude but still had noisy patterns. On 01/17-18/99, there was an increase again in the noise level (4 GMT 01/17 - 5 GMT 01/18). During this period the gndrad IRT data also exhibited noise patterns (the IRT was not operational). In February, the instrument exhibited large noise variations again. On 02/16, a wiring problem was corrected and the noise dropped back to 1-5 W/m2. However, the noise levels began to increase again. |
Measurements: | nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/1999 | 0000 | 12/31/2000 | 2359 |
Subject: | NSA/GNDRAD/C1 - Noisy PIR Data |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | During the period referenced, the ground PIR was noisy in comparison to the the sky PIR data. (Note U021211.1 documents same problem for 9/1/98-2/28/99) The noise problem continued after the GNDRAD data logger was replaced in late September. Particularly strong examples of the noise can be seen in data from 11/10 - 11/19/99. The peak to peak noise reaches 12 W/m2. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/08/1998 | 2051 | 12/15/1998 | 1200 |
Subject: | NSA/GNDRAD/C1 - PIR1 Calibration problems resulted in small error |
DataStreams: | nsagndrad60sC1.a1 |
Description: | The dome correction coefficients were not properly reset in calibration file until the early morning of 12/15. These errors probably account for less than 4% in error. |
Measurements: | nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/16/1999 | 0030 | 02/16/1999 | 2000 |
02/17/1999 | 0000 | 02/17/1999 | 0100 |
Subject: | NSA/GNDRAD/C1 - PIR offline |
DataStreams: | nsagndrad60sC1.a1 |
Description: | The PIR was taken off line during this period; data recorded during this period are garbage. |
Measurements: | nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/08/1998 | 2030 | 12/08/1998 | 2050 |
Subject: | NSA/GNDRAD/C1 - Instrument maintenance |
DataStreams: | nsagndrad60sC1.a1 |
Description: | Instrument replaced. Data affected by the work done during this time. |
Measurements: | nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/1999 | 1200 | 03/03/1999 | 1515 |
Subject: | NSA/GNDRAD/C1 - Unreasonable PSP Data |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | During the darkness in the middle of this night, the PSP had a signal of 15 W/m2 over a three hour long period. Cause unknown. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/21/1999 | 0000 | 02/09/1999 | 2359 |
Subject: | NSA/GNDRAD/C1 - Bad PSP calibrations applied |
DataStreams: | nsagndrad60sC1.a1 |
Description: | The ground radiation data are bad during this period due to erroneous calibration factors in the logger configuration file. |
Measurements: | nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/13/1999 | 1945 | 03/13/1999 | 1955 |
Subject: | NSA/GNDRAD/C1 - Data corrupted by brief spike |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | There is a unreasonable spike at this time. Simultaneous spikes on the NET, the PSP, and the PIR. Cause unknown, but most likely related to data logger. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/1999 | 0000 | 09/30/1999 | 2359 |
Subject: | NSA/GNDRAD/C1 - Rad instruments shaded by shelter |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Each day around 02:00 - 03:30 GMT there is a unexpected decrease for the PSP irradiance measurement due to a shading problem associated with the swing set location relative to the instrument shelter. The GNDRAD NET and MFR instrument data also reflects this problem. Problem was resolved when the GNDRAD instruments were moved to the 10 meter tip tower. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.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 |
---|---|---|---|
12/09/1998 | 0000 | 12/12/1998 | 2359 |
Subject: | NSA/SKYRAD - Barrow SKYRAD PIRD Misconfiguration 12/9 - 12/12/98 |
DataStreams: | nsaskyrad20sC1.a1, nsaskyrad60sC1.a1 |
Description: | The PIRD was incorrectly set from 12/9/98 to 12/12/98 that resulted in an error of approximately 3.7% (was set to 243902 instead of 235294). |
Measurements: | nsaskyrad20sC1.a1:
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: | nsaskyradC1.00, nsaskyrad60sC1.a1 |
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 |
---|---|---|---|
10/28/1998 | 1300 | 11/21/1998 | 1840 |
Subject: | NSA/SKYRAD/C1 - IRT insufficiently insulated |
DataStreams: | nsaskyradC1.00, nsaskyrad60sC1.a1 |
Description: | IRT was reinstalled with insufficient insulation to maintain an internal reference temperature above 0 degrees C. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyradC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/1998 | 0000 | 12/10/1998 | 1400 |
Subject: | NSA/SKYRAD/C1 - IRT insufficiently insulated |
DataStreams: | nsaskyradC1.00, nsaskyrad60sC1.a1 |
Description: | IRT was reinstalled with insufficient insulation to maintain an internal reference temperature above 0 degrees C. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyradC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/21/1998 | 1800 | 12/03/1998 | 0000 |
Subject: | NSA/SKYRAD/C1 - IRT removed from service |
DataStreams: | nsaskyradC1.00, nsaskyrad60sC1.a1 |
Description: | Instrument was removed to check performance. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyradC1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/06/1998 | 2156 | 12/22/2000 | 2020 |
Subject: | NSA/GNDRAD/C1 - IRT insufficiently heated |
DataStreams: | nsagndrad60sC1.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: | nsagndrad60sC1.a1:
|
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:
|