DQR ID | Subject | Data Streams Affected |
---|---|---|
D020823.32 | NSA/MWR/C1 - MWR moved | nsamwrlosC1.a1, nsamwrlosC1.b1 |
D021111.1 | NSA/SKYRAD/C1 - Unshaded PIR data unreasonable | nsaskyrad60sC1.a1 |
D021111.14 | NSA/SKYRAD/C1 - Shaded PIR data unreasonable | nsaskyrad60sC1.a1 |
D021111.16 | NSA/SKYRAD/C1 - Shaded PIR data unreasonable | 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 |
D021211.11 | NSA/GNDRAD/C1 - Noisy PIR Data | nsagndrad60sC1.a1 |
D021211.8 | NSA/GNDRAD/C1 - PIR offline | nsagndrad60sC1.a1 |
D021212.5 | NSA/GNDRAD/C1 - Bad PSP calibrations applied | nsagndrad60sC1.a1 |
D030205.1 | NSA/C1/MWR - liquid water paths affected by frost and ice formation | nsamwrlosC1.a1 |
D030510.2 | NSA/SKYRAD/C1 - IRT measurements during precipitation events | nsaskyrad60sC1.a1 |
D060420.8 | NSA/MWR/C1 - software upgrade (version 3.28) | nsamwrlosC1.a1, nsamwrlosC1.b1 |
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 |
---|---|---|---|
02/27/1999 | 2230 | 02/27/1999 | 2300 |
Subject: | NSA/MWR/C1 - MWR moved |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | The MWR data are unreasonable during this period, because it was shutdown and moved by operations at this time. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
01/02/1998 | 0000 | 12/06/2002 | 0005 |
Subject: | NSA/C1/MWR - liquid water paths affected by frost and ice formation |
DataStreams: | nsamwrlosC1.a1 |
Description: | The heater/blower did not completely remove ice and frost formed on the teflon window under severe winter weather conditions. Also, the sensitivity of the moisture sensor was temperature dependent and, if the temperature changd significantly after the sensor had been tuned, the heater failed to turn on when the window became wet or frosted. This resulted in unflagged periods of elevated and unrealistic values of liquid water path. The heater/blower assembly was replaced with an improved version that incorporates better circuitry, a larger capacity fan, and better airflow distribution. |
Measurements: | nsamwrlosC1.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 |
---|---|---|---|
01/02/1998 | 0000 | 02/03/1999 | 1200 |
Subject: | NSA/MWR/C1 - software upgrade (version 3.28) |
DataStreams: | nsamwrlosC1.a1, nsamwrlosC1.b1 |
Description: | The MWR operating program was upgraded to version 3.28 on 3 February 1999. This version includes a beam width correction as well as providing the capability to automatically level the elevation mirror (that is, to automatically detect and correct offsets in the elevation angle stepper motor position.) The improvement in the quality of the tip curves resulting from the auto- leveling has been dramatic: differences in the brightness temperatures at 3 airmasses (19.5 and 160.5 degrees) have been reduced from +/- 5 K to +/- 0.5 K. In order to take full advantage of this improvement to detect and reject cloudy tip curves, the minimum value of the goodness-of-fit coefficient for a valid tip curve has been increased from 0.995 to 0.998. |
Measurements: | nsamwrlosC1.a1:
nsamwrlosC1.b1:
|
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:
|