DQR ID | Subject | Data Streams Affected |
---|---|---|
D001110.4 | SGP/MWR/B4 - Sky Temperatures Noisy | sgpmwrtipB4.a0, sgpmwrlosB4.b1, sgpmwrlosB4.a1 |
D001110.8 | SGP/MWR/B6 - Sky Temperatures Noisy | sgpmwrtipB6.a0, sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
D001114.16 | SGP/MWR/B4 - Sky Temperatures Noisy | sgpmwrtipB4.a1, sgpmwrlosB4.b1, sgpmwrlosB4.a1 |
D001115.1 | SGP/MWR/B1 - occasional negative brightness temperatures | sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrtipB1.a1, sgpmwrlosB1.00, sgpmwrtipB1.00 |
D001121.3 | SGP/MWR/B6 - Sky Temperatures Noisy | sgpmwrtipB6.a0, sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
D001122.1 | SGP/MWR/C1 - calibration checks | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D001205.1 | SGP/MWR/C1 - Time drift | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D010111.26 | SGP/MWR/B1 - Spikes in sky temperature data | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
D010111.29 | SGP/MWR/B4 - Negtive spikes in sky temperature data | sgpmwrlosB4.a1, sgpmwrlosB4.b1 |
D010112.1 | SGP/MWR/B6 - Spikes in sky temperature data | sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
D010129.1 | SGP/MWR/B6 - incorrect flagging of data | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D010208.2 | SGP/MWR/B4 - noisy data | sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpmwrlosB4.a1 |
D010208.3 | SGP/MWR/B6 - noisy data | sgpmwrtipB6.a1, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D010208.4 | SGP/MWR/B1 - noisy data | sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D010215.5 | SGP/MWR/C1 - IRT failure | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D010426.1 | SGP/MWR/B4 - spare MWR | sgpmwrtipB4.a1, sgpmwrtipB4.a0, sgpmwrlosB4.a1, sgpmwrlosB4.a0, sgpmwrlosB4.b1 |
D011005.5 | SGP/MWR/E14 - calibration check | sgpmwrlosE14.b1, sgpmwrlosE14.a1 |
D011005.6 | SGP/MWR/E14 - Upgrade of Arm Core PC Configuration | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D020119.1 | SGP/MWR/E14 - Hard disk failure | sgpmwrE14.00, sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D020805.1 | SGP/MWR/B6 - High noise level, poor calibration | sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D020805.2 | SGP/MWR/B6 - Instrument replaced, calibration incorrect | sgp5mwravgB6.c1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D020805.3 | SGP/MWR/B6 - Instrument replaced, calibration updating | sgp5mwravgB6.c1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D030121.2 | SGP/MWR/B6 - Incorrect MWR warmup configuration | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D030214.1 | SGP/MWR/B4/C1 - LOS cycle skipping | sgpmwrlosC1.b1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosC1.a1 |
D030312.10 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D030312.2 | SGP/MWR/B1 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
D030312.3 | SGP/MWR/B4 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB4.a1, sgpmwrlosB4.b1 |
D030312.4 | SGP/MWR/B5 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB5.a1, sgpmwrlosB5.b1 |
D030312.5 | SGP/MWR/B6 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D030822.1 | SGP/MWR/C1 - Incorrect min and max values | sgpmwrlosC1.b1 |
D030822.2 | SGP/MWR/B1 - min/max/delta values incorrect | sgpmwrlosB1.b1 |
D030822.3 | SGP/MWR/B4 - min/max/delta values incorrect | sgpmwrlosB4.b1 |
D030822.4 | SGP/MWR/B5 - min/max/delta values incorrect | sgpmwrlosB5.b1 |
D030822.5 | SGP/MWR/B6 - min/max/delta values incorrect | sgpmwrlosB6.b1 |
D030822.6 | SGP/MWR/E14 - min/max/delta values incorrect | sgpmwrlosE14.b1 |
D030902.1 | SGP/MWR/C1 - no air temperature signal | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D030909.1 | SGP/MWR/B1 - thermal instability | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
D030909.2 | SGP/MWR/B6 - thermal instability | sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D030909.3 | SGP/MWR/E14 - thermal instability | sgpmwrlosE14.a1, sgpmwrlosE14.b1 |
D031106.2 | SGP/MWR/B4 - no air temperature signal | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
D040210.2 | SGP/MWR/B6 - Heater problem | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D040824.1 | SGP/MWR/C1 - Wet window flag "on" more frequently than expected | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D041001.3 | SGP/MWR/C1 - Instrument problem | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D041014.1 | SGP/MWR/C1 - thermal instability | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D041021.3 | SGP/MWR/B4 - Heater problem | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
D041117.1 | SGP/MWR/E14 - Reprocess: wrong retrievals | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1, sgpqmemwrcolE14.c1 |
D041117.2 | SGP/MWR/C1 - Reprocess: wrong retrievals | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpqmemwrcolC1.c1 |
D050203.3 | SGP/MWR/C1 - spare instrument | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D050705.1 | SGP/MWR/E14 - computer problem | sgpmwrE14.00, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D050722.1 | SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpqmemwrcolC1.c1 |
D050725.2 | SGP/MWR/B1 - Reprocess: Revised Retrieval Coefficients | sgp5mwravgB1.c1, sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrtipB1.a1, sgpqmemwrcolB1.c1 |
D050725.3 | SGP/MWR/B4 - Reprocess: Revised Retrieval Coefficients | sgp5mwravgB4.c1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpqmemwrcolB4.c1 |
D050725.4 | SGP/MWR/B5 - Reprocess: Revised Retrieval Coefficients | sgp5mwravgB5.c1, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1, sgpqmemwrcolB5.c1 |
D050725.5 | SGP/MWR/B6 - Reprocess: Revised Retrieval Coefficients | sgp5mwravgB6.c1, sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1, sgpqmemwrcolB6.c1 |
D050725.6 | SGP/MWR/E14 - Reprocess: Revised Retrieval Coefficients | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1, sgpqmemwrcolE14.c1 |
D050822.2 | SGP/MWR/E14 - Reprocess: thermal instability | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D050822.5 | SGP/MWR/B1 - thermal instability | sgpmwrtipB1.a1, sgpmwrlosB1.b1 |
D050822.6 | SGP/MWR/B1 - Reprocess: mixer temp adjustment | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D050915.1 | SGP/MWR/C1 - Instrument noise problem | sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgp1mwravgC1.c1, sgp5mwravgC1.c1 |
D050927.2 | SGP/MWR/B1 - New software version (4.15) installed | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D050927.3 | SGP/MWR/B4 - New software version (4.15) installed | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
D050927.4 | SGP/MWR/B5 - New software version (4.15) installed | sgpmwrlosB5.b1, sgpmwrtipB5.a1 |
D050928.6 | SGP/MWR/B6 - New software version (4.15) installed | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D051011.3 | SGP/MWR/E14 - New software version (4.15) installed | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D051011.6 | SGP/MWR/C1 - New software version (4.15) installed | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D060322.1 | SGP/MWR/E14 - Instrument maintenance | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1, sgpmwrE14.00 |
D060420.1 | SGP/MWR/B4 - Reprocess: wrong retrievals | sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpqmemwrcolB4.c1 |
D060420.3 | SGP/MWR/B5 - Reprocess: wrong retrievals | sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1, sgpqmemwrcolB5.c1 |
D060420.4 | SGP/MWR/B6 - Reprocess: wrong retrievals | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1, sgpqmemwrcolB6.c1 |
D060717.2 | SGP/MWR/C1 - Spikes in ambient temperature readings | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D060718.3 | SGP/MWR/B5 - Mixer temp unstable | sgpmwrlosB5.b1, sgpmwrtipB5.a1 |
D060726.1 | SGP/MWR/B1 - Reprocessed: Corrected calibration | sgpmwrB1.00, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D060726.2 | SGP/MWR/B6 - Reprocessed: Corrected calibration | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D060808.1 | SGP/MWR/B6 - Reprocessed: Corrected calibration | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D061213.5 | SGP/MWR/E14 - Radiometer testing | sgpmwrE14.00, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D070314.2 | SGP/MWR/C1/E14 - Freezing rain-Incorrect rain flag | sgpmwrlosC1.b1, sgpmwrlosE14.b1, sgpmwrtipC1.a1, sgpmwrtipE14.a1 |
D070406.2 | SGP/MWR/E14 - Power supply failure | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D070801.1 | SGP/MWR/B1 - 23.8-GHz brightness temperature slightly high | sgp5mwravgB1.c1, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D070802.3 | SGP/MWR/C1 - Noisy data | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D070802.4 | SGP/MWR/E14 - Bias in 23.8-GHz measurements | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
D071011.3 | SGP/MWR/B6 - Incorrect rain flag | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D071011.4 | SGP/MWR/B5 - Intermittent missing data | sgpmwrtipB5.a1, sgpmwrlosB5.b1 |
D071128.2 | SGP/MWR/C1 - Reprocessed: Radiometer reinstalled | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D071129.1 | SGP/MWR/B1 - Calibration failure | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D071210.1 | SGP/MWR/B6 - Incorrect mixer kinetic temperature | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D080103.2 | SGP/MWR/C1 - Missing data | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D080410.3 | SGP/MWR/B5 - Some rain events flagged | sgpmwrlosB5.b1, sgpmwrtipB5.a1 |
D080522.2 | SGP/MWR/B6 - Reprocessed: Re-calibration | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D080701.2 | SGP/MWR/B4 - Missing data | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
D080724.1 | SGP/MWR/B5 - Missing data | sgpmwrlosB5.b1 |
D080811.2 | SGP/MWR/B1 - Thermal instability-- Missing data | sgp5mwravgB1.c1, sgpmwrB1.00, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D081013.5 | SGP/MWR/C1 - Increased noise in 31.4 GHz channel | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D090114.7 | SGP/MWR/B1 - Noisy data | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D090115.2 | SGP/MWR/B4 - Occasional spikes in data | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
D090202.4 | SGP/MWR/B1 - Missing data | sgpmwrlosB1.b1 |
D090225.11 | SGP/MWR/B6 - Loss of thermal stabilization | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
D090225.7 | SGP/MWR/B1 - Noisy data | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D090512.5 | SGP/MWR/B1 - Increased noise level | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
D090720.3 | SGP/MWR/B6 - Missing data | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/07/2000 | 0000 | 08/09/2000 | 2359 |
Subject: | SGP/MWR/B4 - Sky Temperatures Noisy |
DataStreams: | sgpmwrtipB4.a0, sgpmwrlosB4.b1, sgpmwrlosB4.a1 |
Description: | The sky temperature data are very noisy, per Victor Morris. |
Measurements: | sgpmwrtipB4.a0:
sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2000 | 0000 | 08/09/2000 | 2359 |
Subject: | SGP/MWR/B6 - Sky Temperatures Noisy |
DataStreams: | sgpmwrtipB6.a0, sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
Description: | The sky temperature data are very noisy, per Victor Morris. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/2000 | 0000 | 09/30/2000 | 2359 |
Subject: | SGP/MWR/B4 - Sky Temperatures Noisy |
DataStreams: | sgpmwrtipB4.a1, sgpmwrlosB4.b1, sgpmwrlosB4.a1 |
Description: | The sky temperature data are very noisy, per Victor Morris. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2000 | 0000 | 06/07/2000 | 2359 |
Subject: | SGP/MWR/B1 - occasional negative brightness temperatures |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrtipB1.a1, sgpmwrlosB1.00, sgpmwrtipB1.00 |
Description: | Occasional spikes in the MWR data were observed. Inspection of the data indicates that these are due to spikes in the gain that result from either unrealistically low values of the blackbody target temperature (~150 K) or unrealistically low values of the microwave signal counts when viewing the blackbody target. Unrealistically low values of the mixer temperature have also been observed. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.a1:
sgpmwrtipB1.00:
sgpmwrlosB1.b1:
sgpmwrlosB1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/2000 | 0000 | 09/30/2000 | 2359 |
Subject: | SGP/MWR/B6 - Sky Temperatures Noisy |
DataStreams: | sgpmwrtipB6.a0, sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
Description: | The sky temperature data are very noisy, per Victor Morris. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/16/2000 | 2210 | 02/16/2000 | 2250 |
09/21/2000 | 1423 | 09/21/2000 | 1434 |
09/21/2000 | 1506 | 09/21/2000 | 1517 |
09/26/2000 | 1426 | 09/26/2000 | 1434 |
10/02/2000 | 1732 | 10/02/2000 | 1752 |
10/02/2000 | 2052 | 10/02/2000 | 2107 |
10/03/2000 | 1406 | 10/03/2000 | 1421 |
09/06/2001 | 1900 | 09/06/2001 | 2000 |
Subject: | SGP/MWR/C1 - calibration checks |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | The MWR calibration was checked by a cryogenic (liquid nitrogen) blackbody target or (in the case of the Sept 2001 time period) by pointing the mirror at an internal blackbody target. The brightness temperatures and vap and liq retrievals are not representative of the sky/atmosphere. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/05/2000 | 1955 | 09/18/2000 | 2145 |
Subject: | SGP/MWR/C1 - Time drift |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | On 9/18/00, I found that the time on the MWR laptop was 1m 21s slow. The Dimension4 utility had last synchronized the time on 5/5/00. Found that the network DNS settings had been disabled. Added the DNS entry for ntp host CF10. Dimension4 synchronized the clock by adding 80.91s. The time had drifted at a rate of -0.59s/day. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2000 | 0000 | 12/31/2000 | 2359 |
Subject: | SGP/MWR/B1 - Spikes in sky temperature data |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
Description: | There are negative spikes in the sky temperature data, per Victor Morris. |
Measurements: | sgpmwrlosB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2000 | 0000 | 12/31/2000 | 2359 |
Subject: | SGP/MWR/B4 - Negtive spikes in sky temperature data |
DataStreams: | sgpmwrlosB4.a1, sgpmwrlosB4.b1 |
Description: | There are negative spikes in the sky temperature data, per Victor Morris. |
Measurements: | sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2000 | 0000 | 12/31/2000 | 2359 |
Subject: | SGP/MWR/B6 - Spikes in sky temperature data |
DataStreams: | sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
Description: | There are negative spikes in the sky temperature data, per Victor Morris. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/04/1999 | 0000 | 02/14/2000 | 2145 |
Subject: | SGP/MWR/B6 - incorrect flagging of data |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | The "wet window" flag was set high more frequent than expected (wet_window = 1 for several hours almost every night). This problem was corrected by the instrument mentor during a site visit. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2000 | 1800 | 01/25/2001 | 2016 |
Subject: | SGP/MWR/B4 - noisy data |
DataStreams: | sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpmwrlosB4.a1 |
Description: | The MWR exhibited occasional negative sky brightness temperatures that were resolved, after eliminating the instrument and communication lines as the source of the problem, by reformatting and reconfiguring the laptop computer. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2000 | 1100 | 01/29/2001 | 1742 |
Subject: | SGP/MWR/B6 - noisy data |
DataStreams: | sgpmwrtipB6.a1, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
Description: | The MWR exhibited occasional negative sky brightness temperatures that were resolved, after eliminating the instrument and communication lines as the source of the problem, by reformatting and reconfiguring the laptop computer. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/2000 | 0000 | 01/30/2001 | 2050 |
Subject: | SGP/MWR/B1 - noisy data |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The MWR exhibited occasional negative sky brightness temperatures that were resolved, after eliminating the instrument and communication lines as the source of the problem, by reformatting and reconfiguring the laptop computer. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/17/2000 | 0000 | 01/24/2001 | 1600 |
Subject: | SGP/MWR/C1 - IRT failure |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
Description: | The IRT was damaged by internal moisture causing sky temperature measurements that are negatively biased compared to those from the AERI. IRT#0517 was returned to the manufacturer for repair and was replaced with spare IRT#1254. |
Measurements: | sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/2001 | 1800 | 01/23/2001 | 1755 |
Subject: | SGP/MWR/B4 - spare MWR |
DataStreams: | sgpmwrtipB4.a1, sgpmwrtipB4.a0, sgpmwrlosB4.a1, sgpmwrlosB4.a0, sgpmwrlosB4.b1 |
Description: | A spare MWR (s.n.38) was temporarily installed at Vici to help resolve problems with the occurance of negative sky brightness temperatures (see BCR-310 and P000712.1). |
Measurements: | sgpmwrtipB4.a1:
sgpmwrtipB4.a0:
sgpmwrlosB4.a0:
sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/06/2001 | 1800 | 09/06/2001 | 1900 |
Subject: | SGP/MWR/E14 - calibration check |
DataStreams: | sgpmwrlosE14.b1, sgpmwrlosE14.a1 |
Description: | The MWR calibration was checked by pointing mirror at internal blackbody target. The brightness temperatures are not representative of the sky. |
Measurements: | sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/26/2001 | 1700 | 09/26/2001 | 1823 |
Subject: | SGP/MWR/E14 - Upgrade of Arm Core PC Configuration |
DataStreams: | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | Upgrade of Arm Core PC configuration to version 2.6B per ECO 407. Data collection was temporarily interrupted. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/2001 | 2300 | 07/20/2001 | 1640 |
Subject: | SGP/MWR/E14 - Hard disk failure |
DataStreams: | sgpmwrE14.00, sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | The hard disk of the MWR laptop failed 7/17 and was replaced 7/20. The ARM Core PC Configuration and MWR configuration files were installed on the new hard disk. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrE14.00:
sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2002 | 0000 | 08/02/2002 | 1652 |
Subject: | SGP/MWR/B6 - High noise level, poor calibration |
DataStreams: | sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
Description: | The data from this instrument (serial number 18) have become increasingly noisy, most likely due to a failing local oscillator. A consequence of this increased noise level has been few valid calibration scans ("tip curves") since 1 April 2002: during the period 26-31 March 2002 1496 valid tip curves were acquired, whereas only 729 were acquired during April, 387 during May, 143 during June, 243 during July. As a result, the calibration was not as well-maintained as usual. The measured brightness temperatures and retrieved precipitable water vapor and liquid water path should be regarded as suspect. The instrument was replaced with serial number 04 on 2 August 2002. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrlosB6.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/02/2002 | 1652 | 08/02/2002 | 2144 |
Subject: | SGP/MWR/B6 - Instrument replaced, calibration incorrect |
DataStreams: | sgp5mwravgB6.c1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
Description: | MWR serial number 18 was replaced with MWR serial number 04 at 1652 on 2 Aug 2002. Between this time and 2214, when a sufficient number of new tip curves were acquired to update the calibration, the old calibration (for serial number 18) was used. During this period the data are incorrect. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrlosB6.a0:
sgp5mwravgB6.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/02/2002 | 2144 | 08/04/2002 | 0213 |
Subject: | SGP/MWR/B6 - Instrument replaced, calibration updating |
DataStreams: | sgp5mwravgB6.c1, sgpmwrlosB6.a0, sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
Description: | Following replacement of the MWR at B6, an automatically and continuously upated median calibration value was used based on data acquired during this period. After this period, sufficient tip curves were available to automatically and continuously determine and account for the temperature dependence of the calibration. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrlosB6.a0:
sgp5mwravgB6.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/2001 | 2205 | 08/01/2002 | 1700 |
Subject: | SGP/MWR/B6 - Incorrect MWR warmup configuration |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | The local oscillator warm-up delay in the MWR configuration file was set to 720 milliseconds instead of the typical 100 milliseconds which substantially increased the duration of the observing cycle. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/2002 | 2034 | 11/05/2002 | 1815 |
Subject: | SGP/MWR/B4/C1 - LOS cycle skipping |
DataStreams: | sgpmwrlosC1.b1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosC1.a1 |
Description: | When MWR software version 4.12 was installed at the SGP, it was observed that the MWRs at CF and BF4 skip line-of-sight (LOS) observing cycles. In LOS mode, the software begins an observing cycle at 0, 20, and 40 seconds after the minute to provide 3 LOS cycles per minute. If a cycle is delayed so that it takes more than 20 seconds to complete, then the next start time is missed, the cycle is skipped, and the data that would have been acquired are lost. It was demonstrated that the interaction with the IRT at CF slowed the MWR observing cycle noticeably and contributed significantly to the LOS cycle skipping. The IRT was removed from the MWR on 5 November 2002 and the LOS cycle skipping at the CF was resolved. The IRT data are now available in a new separate datastream: sgpirtC1.a1 (and soon sgpirt2sC1.a1). The BF4 cycle skipping may have resulted from a combination of an additional air temperature sensor on this instrument and the use of a fiber optic cable. However, the cycle skipping on this instrument appears to have abated without modifications to the instrument configuration. |
Measurements: | sgpmwrlosB4.b1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/17/1999 | 1800 | 07/31/2002 | 2034 |
Subject: | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgp5mwravgC1.c1:
sgp1mwravgC1.c1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/28/2000 | 0300 | 07/16/2002 | 2200 |
Subject: | SGP/MWR/B1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgpmwrlosB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2000 | 2100 | 07/09/2002 | 1700 |
Subject: | SGP/MWR/B4 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB4.a1, sgpmwrlosB4.b1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/23/1999 | 0600 | 07/10/2002 | 1700 |
Subject: | SGP/MWR/B5 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB5.a1, sgpmwrlosB5.b1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgpmwrlosB5.a1:
sgpmwrlosB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/02/1999 | 1800 | 07/09/2002 | 2100 |
Subject: | SGP/MWR/B6 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/18/2002 | 0000 | 02/10/2003 | 2359 |
Subject: | SGP/MWR/C1 - Incorrect min and max values |
DataStreams: | sgpmwrlosC1.b1 |
Description: | The values of valid_min and valid_max applied to fields tkxc and tknd were incorrect. They should be 303 and 333, respectively. |
Measurements: | sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/1998 | 0000 | 01/24/2003 | 1659 |
Subject: | SGP/MWR/B1 - min/max/delta values incorrect |
DataStreams: | sgpmwrlosB1.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/1998 | 0000 | 02/10/2003 | 2359 |
Subject: | SGP/MWR/B4 - min/max/delta values incorrect |
DataStreams: | sgpmwrlosB4.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | sgpmwrlosB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/16/1998 | 0000 | 02/10/2003 | 2359 |
Subject: | SGP/MWR/B5 - min/max/delta values incorrect |
DataStreams: | sgpmwrlosB5.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | sgpmwrlosB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/1998 | 0000 | 02/10/2003 | 2359 |
Subject: | SGP/MWR/B6 - min/max/delta values incorrect |
DataStreams: | sgpmwrlosB6.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | sgpmwrlosB6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/21/2001 | 0000 | 07/23/2002 | 2359 |
Subject: | SGP/MWR/E14 - min/max/delta values incorrect |
DataStreams: | sgpmwrlosE14.b1 |
Description: | The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were incorrect. They should be 303, 333, and 0.5 K, respectively. |
Measurements: | sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/22/2003 | 2115 | 09/30/2004 | 1835 |
Subject: | SGP/MWR/C1 - no air temperature signal |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air temperature sensor failed to properly report. It was determined that the wires carrying the signal to the analog board did not conform to the standard expected by the upgraded blower. The problem was corrected by changing the wiring. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/03/2003 | 0000 | 08/27/2003 | 2359 |
Subject: | SGP/MWR/B1 - thermal instability |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
Description: | During periods of high ambient temperature, the instrument may have been thermally unstable. |
Measurements: | sgpmwrlosB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/14/2003 | 0000 | 08/27/2003 | 2359 |
Subject: | SGP/MWR/B6 - thermal instability |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
Description: | During periods of high ambient temperature, the instrument may have been thermally unstable. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/2003 | 0000 | 08/28/2003 | 2359 |
Subject: | SGP/MWR/E14 - thermal instability |
DataStreams: | sgpmwrlosE14.a1, sgpmwrlosE14.b1 |
Description: | During periods of high ambient temperature, the instrument may have been thermally unstable. |
Measurements: | sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2003 | 1741 | 12/23/2004 | 2025 |
Subject: | SGP/MWR/B4 - no air temperature signal |
DataStreams: | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
Description: | When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air temperature sensor failed to properly report. It was determined that the wires carrying the signal to the analog board did not conform to the standard expected by the upgraded blower. The problem was corrected by changing the wiring and modifying the MWR software to read the signal from the appropriate corresponding channel. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/20/2004 | 2235 | 02/17/2004 | 2243 |
Subject: | SGP/MWR/B6 - Heater problem |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | When the heater/blower was replaced, the wet_window flag was constantly set high because the "moisture threshold voltage" value in the configuration file was not changed. The value was corrected for the new heater and the constant flagging stopped. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1999 | 0000 | 12/21/1999 | 2359 |
11/10/2000 | 0000 | 12/08/2000 | 2359 |
01/26/2001 | 0000 | 03/05/2001 | 2359 |
12/18/2001 | 0000 | 12/31/2001 | 2359 |
02/11/2002 | 0000 | 02/28/2002 | 2359 |
02/19/2003 | 0000 | 03/26/2003 | 2359 |
10/15/2003 | 0000 | 11/03/2003 | 2359 |
Subject: | SGP/MWR/C1 - Wet window flag "on" more frequently than expected |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
Description: | The wet window flag was set "on" more frequently than expected during the time periods specified. This indicates the heater has been running more than necessary. In most instances the moisture sensitivity was adjusted at the end of these periods. |
Measurements: | sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/2004 | 2114 | 09/24/2004 | 1354 |
09/26/2004 | 2332 | 09/27/2004 | 0317 |
09/27/2004 | 1214 | 09/30/2004 | 1820 |
Subject: | SGP/MWR/C1 - Instrument problem |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | The MWR mixer temperature, blackbody temperature, and moisture flag are incorrect. This began when the instrument was returned to service after the analog board was temporarily removed to check the presence and absence of certain resistors. The board must have been accidently damaged during this process. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/2004 | 1835 | 10/13/2004 | 2118 |
Subject: | SGP/MWR/C1 - thermal instability |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | The analog board was replaced with a spare (D041001.3) with a reference temperature that was set too low (306 K) so that during periods of high ambient temperature, the instrument became thermally unstable. The problem was corrected when the temperature setting was increased (to 311 K). |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/2004 | 1930 | 11/23/2004 | 1720 |
Subject: | SGP/MWR/B4 - Heater problem |
DataStreams: | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
Description: | The heater does not appear to be operating properly when moisture is detected. The problem was corrected by adjusting the heater sensivity. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/24/2004 | 1945 | 11/11/2004 | 2000 |
Subject: | SGP/MWR/E14 - Reprocess: wrong retrievals |
DataStreams: | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1, sgpqmemwrcolE14.c1 |
Description: | When MWR#04 was installed at EF14 (replacing MWR#33), out-of-date retrieval coefficients were used in the configuration file. The correct coefficients were applied when the computer, software, and configuration file were upgraded. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
sgpqmemwrcolE14.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/2004 | 1643 | 11/11/2004 | 2100 |
Subject: | SGP/MWR/C1 - Reprocess: wrong retrievals |
DataStreams: | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpqmemwrcolC1.c1 |
Description: | When the computer and core configuration were upgraded, retrieval coefficients for BF1 were accidently included in the configuration file. The correct coefficients for CF1 were applied when the configuration file was updated. |
Measurements: | sgpmwrtipC1.a1:
sgpqmemwrcolC1.c1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/2003 | 1558 | 08/22/2003 | 2059 |
Subject: | SGP/MWR/C1 - spare instrument |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | The spare MWR, S.N. 04, was installed while the production instrument, S.N. 10, was returned to the manufacturer for upgrades. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/29/2005 | 0000 | 08/09/2005 | 1847 |
Subject: | SGP/MWR/E14 - computer problem |
DataStreams: | sgpmwrE14.00, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | The computer was operating sporadically, requiring frequent reboots and resulting in periods of missing data. A warranty replacement of the motherboard corrected the problem. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrE14.00:
sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2002 | 2000 | 06/28/2005 | 2300 |
Subject: | SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients |
DataStreams: | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpqmemwrcolC1.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active as follows (BCR 456): SGP/C1 (Lamont) 4/16/2002, 2000 SGP/B1 (Hillsboro) 4/12/2002, 1600 SGP/B4 (Vici) 4/15/2002, 2300 SGP/B5 (Morris) 4/15/2002, 2300 SGP/B6 (Purcell) 4/16/2002, 2200 SGP/E14(Lamont) 4/16/2002, 0000 NSA/C1 (Barrow) 4/25/2002, 1900 NSA/C2 (Atqasuk) 4/18/2002, 1700 TWP/C1 (Manus) 5/04/2002, 0200 TWP/C2 (Nauru) 4/27/2002, 0600 TWP/C3 (Darwin) inception The MONORTM-based retrieval coefficients became active as follows (BCR 984): SGP/C1 (Lamont) 6/28/2005, 2300 SGP/B1 (Hillsboro) 6/24/2005, 2100 SGP/B4 (Vici) 6/24/2005, 2100 SGP/B5 (Morris) 6/24/2005, 2100 SGP/B6 (Purcell) 6/24/2005, 1942 SGP/E14(Lamont) 6/28/2005, 2300 NSA/C1 (Barrow) 6/29/2005, 0000 NSA/C2 (Atqasuk) 6/29/2005, 0000 TWP/C1 (Manus) 6/30/2005, 2100 TWP/C2 (Nauru) 6/30/2005, 2100 TWP/C3 (Darwin) 6/30/2005, 2100 PYE/M1 (Pt. Reyes) 4/08/2005, 1900** ** At Pt. Reyes, the original retrieval coefficients implemented in March 2005 were based on a version of the Rosenkranz model that had been modified to use the HITRAN half-width at 22 GHz and to be consistent with the water vapor continuum in MONORTM. These retrievals yield nearly identical results to the MONORTM retrievals. Therefore the Pt. Reyes data prior to 4/08/2005 may not require reprocessing. |
Measurements: | sgp5mwravgC1.c1:
sgpmwrtipC1.a1:
sgpqmemwrcolC1.c1:
sgp1mwravgC1.c1:
sgpmwrlosC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/12/2002 | 1600 | 06/24/2005 | 2100 |
Subject: | SGP/MWR/B1 - Reprocess: Revised Retrieval Coefficients |
DataStreams: | sgp5mwravgB1.c1, sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrtipB1.a1, sgpqmemwrcolB1.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active at SGP.B1 20020412.1600. The MONORTM-based retrieval coefficients became active at SGP.B1 20050624.2100. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | sgpmwrlosB1.a1:
sgp5mwravgB1.c1:
sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
sgpqmemwrcolB1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2002 | 2300 | 06/24/2005 | 2100 |
Subject: | SGP/MWR/B4 - Reprocess: Revised Retrieval Coefficients |
DataStreams: | sgp5mwravgB4.c1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpqmemwrcolB4.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active at SGP.B4 20020415.2300. The MONORTM-based retrieval coefficients became active at SGP.B4 20050624.2100. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | sgp5mwravgB4.c1:
sgpmwrtipB4.a1:
sgpqmemwrcolB4.c1:
sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2002 | 2300 | 06/24/2005 | 2100 |
Subject: | SGP/MWR/B5 - Reprocess: Revised Retrieval Coefficients |
DataStreams: | sgp5mwravgB5.c1, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1, sgpqmemwrcolB5.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active at SGP.B5 20020415.2300. The MONORTM-based retrieval coefficients became active at SGP.B5 20050624.2100. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | sgp5mwravgB5.c1:
sgpmwrlosB5.a1:
sgpmwrlosB5.b1:
sgpqmemwrcolB5.c1:
sgpmwrtipB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2002 | 2200 | 06/24/2005 | 1942 |
Subject: | SGP/MWR/B6 - Reprocess: Revised Retrieval Coefficients |
DataStreams: | sgp5mwravgB6.c1, sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1, sgpqmemwrcolB6.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active at SGP.B6 20020416.2200. The MONORTM-based retrieval coefficients became active at SGP.B6 20050624.1942. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
sgp5mwravgB6.c1:
sgpqmemwrcolB6.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2002 | 0000 | 06/28/2005 | 2300 |
Subject: | SGP/MWR/E14 - Reprocess: Revised Retrieval Coefficients |
DataStreams: | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1, sgpqmemwrcolE14.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active at SGP.E14 20020416.0000. The MONORTM-based retrieval coefficients became active at SGP.E14 20050628.2300. Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval coefficients to all MWR prior to April 2002. An additional reprocessing task will be undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read reprocessing comments in the netcdf file header carefully to ensure you are aware which retrieval is in play. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
sgpqmemwrcolE14.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2005 | 1828 | 08/02/2005 | 2002 |
Subject: | SGP/MWR/E14 - Reprocess: thermal instability |
DataStreams: | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | During periods of high ambient temperature, the instrument may have been thermally unstable. The problem was corrected by increasing the RF deck temperature from 50 to 56 C. The data will need to be reprocessed with calibration coefficients derived after the reference temperature, tkmx, was adjusted. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2005 | 1800 | 08/05/2005 | 1935 |
Subject: | SGP/MWR/B1 - thermal instability |
DataStreams: | sgpmwrtipB1.a1, sgpmwrlosB1.b1 |
Description: | During periods of high ambient temperature, the instrument may have been thermally unstable. The problem was corrected by increasing the RF deck temperature from 50 to 52 C. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/05/2005 | 2004 | 08/07/2005 | 0555 |
Subject: | SGP/MWR/B1 - Reprocess: mixer temp adjustment |
DataStreams: | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The RF deck temperature was increased from 50 to 52 C to prevent thermal instability in summer. This resulted in a change in the calibration. The data need to be reprocessed with the calibration coefficients that were automatically derived after the reference temperature, tkmx, was adjusted. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/28/2005 | 1400 | 08/05/2005 | 1700 |
Subject: | SGP/MWR/C1 - Instrument noise problem |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgp1mwravgC1.c1, sgp5mwravgC1.c1 |
Description: | Various variables including the mixer temperatures were very noisy. After several attempts to fix the problem, the instrument was taken off line and returned to the manufacturer for repair. |
Measurements: | sgp5mwravgC1.c1:
sgpmwrtipC1.a1:
sgp1mwravgC1.c1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/2002 | 2200 | 09/13/2005 | 1806 |
Subject: | SGP/MWR/B1 - New software version (4.15) installed |
DataStreams: | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 9/13/2005 at 21:25. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/09/2002 | 1700 | 09/13/2005 | 2121 |
Subject: | SGP/MWR/B4 - New software version (4.15) installed |
DataStreams: | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 9/13/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/10/2002 | 1700 | 09/13/2005 | 2124 |
Subject: | SGP/MWR/B5 - New software version (4.15) installed |
DataStreams: | sgpmwrlosB5.b1, sgpmwrtipB5.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 9/13/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrlosB5.b1:
sgpmwrtipB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/09/2002 | 2100 | 09/23/2005 | 2246 |
Subject: | SGP/MWR/B6 - New software version (4.15) installed |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 9/23/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2002 | 1458 | 08/01/2005 | 2306 |
Subject: | SGP/MWR/E14 - New software version (4.15) installed |
DataStreams: | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in May 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 8/1/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/31/2002 | 2027 | 08/04/2005 | 1959 |
Subject: | SGP/MWR/C1 - New software version (4.15) installed |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier problem. The software upgrade corrected the earlier problem but introduced a new one that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these problems. The new MWR software, version 4.15, was installed on 08/04/2005. As a consequence of this upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2006 | 2200 | 03/29/2006 | 2100 |
Subject: | SGP/MWR/E14 - Instrument maintenance |
DataStreams: | sgpmwrlosE14.a1, sgpmwrlosE14.b1, sgpmwrtipE14.a1, sgpmwrE14.00 |
Description: | The MWR teflon cover was replaced with an old one that is not hydrophobic. This affected the measurements during and immediately after rain. A new teflon window was placed on 3/29 |
Measurements: | sgpmwrtipE14.a1:
sgpmwrE14.00:
sgpmwrlosE14.b1:
sgpmwrlosE14.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2004 | 1729 | 11/23/2004 | 1713 |
Subject: | SGP/MWR/B4 - Reprocess: wrong retrievals |
DataStreams: | sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpqmemwrcolB4.c1 |
Description: | When the computer and core configuration were upgraded, retrieval coefficients for BF1 were accidently included in the configuration file. The correct coefficients for BF4 were applied when the software was upgraded to ver. 4.14 and the configuration file was updated. |
Measurements: | sgpmwrtipB4.a1:
sgpqmemwrcolB4.c1:
sgpmwrlosB4.b1:
sgpmwrlosB4.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2004 | 1725 | 11/12/2004 | 1903 |
Subject: | SGP/MWR/B5 - Reprocess: wrong retrievals |
DataStreams: | sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1, sgpqmemwrcolB5.c1 |
Description: | When the computer and core configuration were upgraded, retrieval coefficients for BF1 were accidently included in the configuration file. The correct coefficients for BF5 were applied when the software was upgraded to ver. 4.14 and the configuration file was updated. |
Measurements: | sgpmwrlosB5.a1:
sgpmwrlosB5.b1:
sgpqmemwrcolB5.c1:
sgpmwrtipB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/29/2004 | 1624 | 11/23/2004 | 2142 |
Subject: | SGP/MWR/B6 - Reprocess: wrong retrievals |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB6.a1, sgpqmemwrcolB6.c1 |
Description: | When the computer and core configuration were upgraded, retrieval coefficients for BF1 were accidently included in the configuration file. The correct coefficients for BF6 were applied when the software was upgraded to ver. 4.14 and the configuration file was updated. |
Measurements: | sgpmwrlosB6.a1:
sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
sgpqmemwrcolB6.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/2006 | 1200 | 07/28/2006 | 1600 |
Subject: | SGP/MWR/C1 - Spikes in ambient temperature readings |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | There are intermittent spikes in the Tkair temperature (T ~ 400 K). On 7/28 the sensor was cleaned and the instrument power cycled following a power outage. Readings came back to normal. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2006 | 0000 | 08/21/2006 | 1100 |
Subject: | SGP/MWR/B5 - Mixer temp unstable |
DataStreams: | sgpmwrlosB5.b1, sgpmwrtipB5.a1 |
Description: | The radiometer mixer temperature was unstable during this time interval. The instability will slightly affect calibration. On 8/21, the instrument was sent to the vendor for repair. June and July data are suspect, the calibration may be slightly incorrect. August data should not be used. |
Measurements: | sgpmwrlosB5.b1:
sgpmwrtipB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/2006 | 0000 | 07/22/2006 | 0600 |
Subject: | SGP/MWR/B1 - Reprocessed: Corrected calibration |
DataStreams: | sgpmwrB1.00, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The radiometer was thermally unstable. Calibration coefficients for the time interval were re-derived after screening for bad values of TKxc and the data were reprocessed. Reprocessed MWRLOS data were archived January 2007. MWRTIP data will not be reprocessed. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrB1.00:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2006 | 1546 | 07/22/2006 | 1700 |
Subject: | SGP/MWR/B6 - Reprocessed: Corrected calibration |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | The instrument was overheating so the radiometer temperature set point was increased from 52 C to 56.5 C. The period between 7/20 and 7/22 has been reprocessed with corrected calibration coefficients. Reprocessed MWRLOS data were archived January 2007. MWRTIP data will not be reprocessed. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/15/2006 | 1900 | 08/18/2006 | 0800 |
Subject: | SGP/MWR/B6 - Reprocessed: Corrected calibration |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | The instrument was overheating so the radiometer temperature set point was increased from 56.3 C to 57.8 C. The data have been reprocessed with corrected calibration coefficients. Reprocessed MWRLOS data were archived January 2007. MWRTIP data will not be reprocessed. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/28/2006 | 2100 | 12/01/2006 | 1900 |
Subject: | SGP/MWR/E14 - Radiometer testing |
DataStreams: | sgpmwrE14.00, sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | The radiometer was removed and taken inside for testing |
Measurements: | sgpmwrtipE14.a1:
sgpmwrE14.00:
sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/2007 | 0000 | 01/15/2007 | 0000 |
Subject: | SGP/MWR/C1/E14 - Freezing rain-Incorrect rain flag |
DataStreams: | sgpmwrlosC1.b1, sgpmwrlosE14.b1, sgpmwrtipC1.a1, sgpmwrtipE14.a1 |
Description: | Between 01/12 and 01/15 brightness temperatures show high values (Tb > 100 K) indicative of rain, however the wet_window flag is 0 (indicative of no rain). During that time there where freezing conditions with ice pellets that were not detected by the sensor. The high brightness temperatures may be due to melting ice on the window. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrtipC1.a1:
sgpmwrlosE14.b1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/2007 | 0400 | 06/05/2007 | 2000 |
Subject: | SGP/MWR/E14 - Power supply failure |
DataStreams: | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | On 3/20 the instrument suffered a power supply failure and was removed for repairs |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/19/2007 | 1600 | 10/16/2009 | 0300 |
Subject: | SGP/MWR/B1 - 23.8-GHz brightness temperature slightly high |
DataStreams: | sgp5mwravgB1.c1, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The radiometer was refurbished and tested at the central facility in 2007. During testing the 23.8-GHz brightness temperature was found to be about 1.5 K higher than the measurements of the C1 radiometer. On 6/19/07 the radiometer was installed at BF1. A comparison with model calculation showed that the measured 23.8-GHz brightness temperature is slightly higher than the model. This offset will affect the PWV retrieval that is on an average about 1.3 mm higher than the radiosonde measurements. The rms error of the retrieved PWV is about 1 mm higher than specified in the netcdf file. On 10/16/2009 the radiometer was removed because of shut down of the boundary facility. |
Measurements: | sgp5mwravgB1.c1:
sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/14/2007 | 0000 | 08/03/2007 | 1508 |
Subject: | SGP/MWR/C1 - Noisy data |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | Since 7/14 the MWR is experiencing intermittent periods of increased noise. The cause for this is under investigation. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/05/2007 | 2000 | 04/26/2009 | 0830 |
Subject: | SGP/MWR/E14 - Bias in 23.8-GHz measurements |
DataStreams: | sgpmwrlosE14.b1, sgpmwrtipE14.a1 |
Description: | Since the instrument was returned after a power supply failure the 23.8-GHz channel is constantly 3 K higher than the other co-located radiometer (C1). Since the instrument was just returned after extensive refurbishing at the manufacturer the cause of the bias is not clear. |
Measurements: | sgpmwrtipE14.a1:
sgpmwrlosE14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/29/2007 | 0000 | 10/25/2007 | 1506 |
Subject: | SGP/MWR/B6 - Incorrect rain flag |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | The rain flag indicator is coming up too often. On 9/11 the SGP technicians checked and adjusted the rain sensor sensitivity. The operation seemed successful, bu on 9/18 the flag indicator came back up and stayed on too much since. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/02/2007 | 1500 | 04/01/2008 | 0000 |
Subject: | SGP/MWR/B5 - Intermittent missing data |
DataStreams: | sgpmwrtipB5.a1, sgpmwrlosB5.b1 |
Description: | Starting on 9/2/07 data have been intermittent due to frequent software crash. Large chunks (several days in duration) of data are missing. In March 2008 the fiber optics connections were checked and several faulty points were identified. The connections were repaired. Since then the instances of software crashes are much reduced. |
Measurements: | sgpmwrlosB5.b1:
sgpmwrtipB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/19/2007 | 2136 | 11/22/2007 | 1400 |
Subject: | SGP/MWR/C1 - Reprocessed: Radiometer reinstalled |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | After the radiometer was reinstalled it had to update the calibration coefficients. Data reprocessed 20071217. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/06/2007 | 0000 | 11/26/2007 | 1733 |
Subject: | SGP/MWR/B1 - Calibration failure |
DataStreams: | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The radiometer suddenly stopped performing successful tip curve calibrations. Brightness temperatures are inaccurate during this time. The instrument was removed from service 20071126. Reprocessing is not possible. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2007 | 1800 | 01/12/2009 | 1700 |
Subject: | SGP/MWR/B6 - Incorrect mixer kinetic temperature |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | The mixer kinetic temperature values are incorrect. The mixer temp sensor was on an open circuit. This is a diagnostic variable. The noise diode mount temperature Tknd can be used to monitor the thermal stabilization of the instrument |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/07/2005 | 1658 | 11/16/2005 | 1945 |
11/18/2005 | 1801 | 11/21/2005 | 1521 |
11/23/2005 | 2201 | 11/25/2005 | 1550 |
11/26/2005 | 0101 | 11/28/2005 | 1543 |
12/03/2005 | 1043 | 12/05/2005 | 1559 |
01/14/2006 | 1822 | 01/17/2006 | 1512 |
01/21/2006 | 0708 | 01/23/2006 | 1515 |
02/03/2006 | 1903 | 02/06/2006 | 1533 |
02/25/2006 | 0730 | 02/27/2006 | 1420 |
07/01/2006 | 2225 | 07/03/2006 | 1413 |
11/28/2006 | 2143 | 12/01/2006 | 1911 |
06/09/2007 | 1150 | 06/11/2007 | 1300 |
07/07/2007 | 1642 | 07/09/2007 | 1304 |
08/03/2007 | 1601 | 11/19/2007 | 2135 |
12/22/2007 | 2112 | 12/24/2007 | 1504 |
05/25/2008 | 1815 | 05/27/2008 | 1335 |
06/06/2008 | 1512 | 06/09/2008 | 0238 |
05/08/2009 | 1535 | 05/11/2009 | 1254 |
10/30/2010 | 0400 | 11/01/2010 | 1200 |
09/24/2011 | 1900 | 09/26/2011 | 1600 |
05/04/2012 | 2100 | 05/07/2012 | 1300 |
01/18/2013 | 2100 | 01/22/2013 | 1500 |
02/16/2013 | 1500 | 02/19/2013 | 1300 |
06/10/2005 | 2118 | 06/13/2005 | 1603 |
08/05/2005 | 1701 | 08/30/2005 | 2001 |
01/15/2005 | 0652 | 01/18/2005 | 1446 |
01/22/2005 | 1449 | 01/24/2005 | 1444 |
12/03/2004 | 1940 | 12/06/2004 | 1454 |
10/16/2004 | 2250 | 10/18/2004 | 1355 |
11/13/2004 | 1849 | 11/15/2004 | 1521 |
09/01/2002 | 1002 | 09/03/2002 | 1332 |
12/21/2002 | 1124 | 12/23/2002 | 1510 |
01/04/2003 | 0703 | 01/06/2003 | 1529 |
08/09/2003 | 0037 | 08/11/2003 | 1456 |
08/23/2003 | 2101 | 08/25/2003 | 1456 |
10/12/2003 | 2025 | 10/14/2003 | 1414 |
11/29/2003 | 1840 | 12/01/2003 | 1502 |
01/24/2004 | 0743 | 01/26/2004 | 1505 |
02/14/2004 | 2316 | 02/17/2004 | 1520 |
09/04/2004 | 0250 | 09/07/2004 | 1419 |
10/09/2004 | 0745 | 10/11/2004 | 1739 |
11/10/2001 | 0558 | 11/13/2001 | 1518 |
11/16/2001 | 1701 | 11/19/2001 | 1706 |
12/21/2001 | 2153 | 12/24/2001 | 1442 |
01/30/2002 | 0845 | 02/11/2002 | 1632 |
03/02/2002 | 0339 | 03/04/2002 | 1533 |
03/09/2002 | 0340 | 03/11/2002 | 1621 |
06/26/2002 | 1639 | 06/28/2002 | 2057 |
10/13/2001 | 0033 | 10/15/2001 | 1526 |
11/03/2001 | 0840 | 11/05/2001 | 1613 |
03/10/2001 | 0702 | 03/12/2001 | 1535 |
03/17/2001 | 0702 | 03/19/2001 | 1422 |
03/24/2001 | 0703 | 03/26/2001 | 1516 |
03/30/2001 | 2038 | 04/02/2001 | 1423 |
05/05/2001 | 1042 | 05/07/2001 | 1514 |
05/18/2001 | 1534 | 05/21/2001 | 1451 |
06/22/2001 | 2200 | 06/25/2001 | 1438 |
06/30/2001 | 0616 | 07/02/2001 | 1435 |
07/28/2001 | 1944 | 07/30/2001 | 1357 |
08/24/2001 | 1348 | 08/27/2001 | 1751 |
09/07/2001 | 1842 | 09/10/2001 | 1439 |
09/15/2001 | 1533 | 09/17/2001 | 1459 |
02/24/2001 | 0230 | 02/26/2001 | 1508 |
03/03/2001 | 0701 | 03/05/2001 | 1546 |
09/23/2000 | 1236 | 09/25/2000 | 1430 |
01/13/2001 | 2011 | 01/16/2001 | 1647 |
06/06/2000 | 1620 | 06/14/2000 | 1451 |
09/01/2000 | 2200 | 09/05/2000 | 1526 |
09/15/2000 | 2057 | 09/18/2000 | 1339 |
07/21/1993 | 1809 | 07/23/1993 | 1541 |
08/07/1993 | 2143 | 08/09/1993 | 1308 |
08/14/1993 | 2233 | 08/16/1993 | 1300 |
08/29/1993 | 1207 | 08/31/1993 | 1206 |
09/17/1993 | 2158 | 09/20/1993 | 1311 |
10/02/1993 | 1612 | 10/04/1993 | 1338 |
10/09/1993 | 0741 | 10/11/1993 | 1319 |
11/12/1993 | 1207 | 11/15/1993 | 1413 |
11/19/1993 | 2027 | 11/21/1993 | 1957 |
12/14/1993 | 2300 | 03/21/1994 | 1759 |
03/28/1994 | 1459 | 03/30/1994 | 2225 |
05/16/1994 | 1900 | 05/19/1994 | 2018 |
06/22/1994 | 1600 | 07/11/1994 | 1859 |
07/16/1994 | 0300 | 07/19/1994 | 2006 |
09/03/1994 | 1647 | 09/05/1994 | 1341 |
09/09/1994 | 2325 | 09/11/1994 | 1543 |
12/17/1994 | 0049 | 12/19/1994 | 1441 |
01/05/1995 | 0000 | 01/05/1995 | 2359 |
01/28/1995 | 0054 | 01/30/1995 | 1443 |
04/01/1995 | 0000 | 04/03/1995 | 1610 |
05/09/1995 | 2200 | 05/11/1995 | 2350 |
06/24/1995 | 0903 | 06/26/1995 | 0159 |
07/07/1995 | 1625 | 07/10/1995 | 1409 |
07/19/1995 | 1741 | 07/21/1995 | 1906 |
07/28/1995 | 1900 | 07/31/1995 | 1918 |
08/22/1995 | 1616 | 08/25/1995 | 2359 |
12/01/1995 | 1434 | 01/11/1996 | 2214 |
01/12/1996 | 2000 | 01/23/1996 | 2030 |
01/23/1996 | 2332 | 02/08/1996 | 2359 |
08/06/1996 | 0000 | 08/06/1996 | 2359 |
09/04/1996 | 1910 | 09/08/1996 | 2359 |
09/14/1996 | 0700 | 09/16/1996 | 1759 |
09/30/1996 | 0000 | 09/30/1996 | 2359 |
12/01/1996 | 0000 | 12/01/1996 | 2359 |
07/01/1997 | 0000 | 07/01/1997 | 2359 |
02/20/1998 | 2339 | 02/22/1998 | 0042 |
05/04/1998 | 0000 | 05/04/1998 | 2359 |
07/18/1998 | 0337 | 07/20/1998 | 1355 |
09/28/1998 | 0000 | 09/28/1998 | 2359 |
10/10/1998 | 2359 | 10/12/1998 | 1959 |
10/17/1998 | 1705 | 10/19/1998 | 1535 |
12/25/1998 | 2233 | 12/28/1998 | 2026 |
02/06/1999 | 1235 | 02/08/1999 | 1652 |
03/13/1999 | 2048 | 03/15/1999 | 2040 |
07/23/1999 | 2059 | 07/26/1999 | 1408 |
12/04/1999 | 0800 | 12/06/1999 | 1821 |
01/07/2000 | 1446 | 02/02/2000 | 2224 |
05/24/2000 | 1455 | 05/31/2000 | 1505 |
Subject: | SGP/MWR/C1 - Missing data |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/18/2008 | 0600 | 03/19/2008 | 0500 |
Subject: | SGP/MWR/B5 - Some rain events flagged |
DataStreams: | sgpmwrlosB5.b1, sgpmwrtipB5.a1 |
Description: | March 18 there was a strong rain event. During this time the brightness temperatures where > 100 K due to water accumulating on the radiometer, however the wet window flag indicator was not tripped. Users should not rely on the wet window flag to screen rain-contaminated data. Instead, apply a brightness temperature threshold of 100 K instead to both channels. |
Measurements: | sgpmwrlosB5.b1:
sgpmwrtipB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/14/2008 | 1300 | 04/15/2008 | 1300 |
Subject: | SGP/MWR/B6 - Reprocessed: Re-calibration |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | There was a slight change in the calibration of the instrument after it recovered from a data outage. Data were reprocessed with the following calibration coefficients: Tnd23_nom = 238.29; Tc23 = 0.024 Tnd31_nom = 221.78; Tc31 = 0.013 The reprocessed data were archived June 2008. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2005 | 1344 | 10/28/2005 | 1537 |
10/28/2005 | 2356 | 10/31/2005 | 1756 |
11/05/2005 | 0214 | 11/07/2005 | 1529 |
11/17/2005 | 1517 | 06/11/2007 | 1855 |
05/27/2008 | 0429 | 06/03/2008 | 1714 |
10/03/2008 | 0520 | 10/06/2008 | 1205 |
10/31/2008 | 1413 | 11/03/2008 | 1318 |
Subject: | SGP/MWR/B4 - Missing data |
DataStreams: | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/10/2001 | 1957 | 11/12/2001 | 1629 |
01/27/2003 | 1413 | 01/31/2003 | 1734 |
03/03/2003 | 1130 | 03/05/2003 | 1904 |
06/14/2003 | 2229 | 06/19/2003 | 1548 |
08/18/2003 | 1131 | 08/20/2003 | 1700 |
10/08/2003 | 0703 | 10/10/2003 | 1545 |
10/10/2003 | 1624 | 10/15/2003 | 1622 |
10/15/2003 | 1700 | 10/17/2003 | 1618 |
12/24/2003 | 2341 | 12/26/2003 | 1741 |
02/16/2004 | 1131 | 02/18/2004 | 1844 |
03/31/2004 | 1917 | 05/07/2004 | 1703 |
09/13/2004 | 1130 | 09/15/2004 | 1559 |
11/13/2004 | 2032 | 11/15/2004 | 1757 |
11/24/2004 | 1834 | 11/26/2004 | 1729 |
12/04/2004 | 1344 | 12/06/2004 | 1846 |
12/25/2004 | 1825 | 12/27/2004 | 1434 |
07/09/2005 | 1114 | 07/11/2005 | 1313 |
03/28/1998 | 1959 | 04/08/1998 | 1626 |
07/07/1998 | 1959 | 07/15/1998 | 1823 |
07/18/1998 | 1900 | 07/29/1998 | 1944 |
09/04/1998 | 1859 | 09/09/1998 | 1848 |
12/15/1998 | 2153 | 12/17/1998 | 1926 |
01/17/1999 | 0549 | 01/19/1999 | 1829 |
06/23/1999 | 1429 | 06/25/1999 | 1945 |
07/23/1999 | 1900 | 07/27/1999 | 1537 |
07/27/1999 | 1759 | 07/29/1999 | 2153 |
07/30/1999 | 1900 | 08/01/1999 | 1453 |
09/11/1999 | 0616 | 09/13/1999 | 1456 |
09/13/1999 | 1700 | 09/15/1999 | 2130 |
09/17/1999 | 1303 | 10/27/1999 | 1716 |
10/24/2005 | 1043 | 10/26/2005 | 1623 |
11/01/2005 | 0911 | 11/09/2005 | 1946 |
11/10/2005 | 0356 | 11/23/2005 | 1440 |
11/29/2005 | 0924 | 12/06/2005 | 1749 |
12/06/2005 | 2100 | 12/09/2005 | 1736 |
12/09/2005 | 2333 | 12/12/2005 | 1429 |
08/21/2006 | 1800 | 06/11/2007 | 1953 |
09/02/2007 | 1451 | 09/07/2007 | 1540 |
02/18/2000 | 1700 | 02/21/2000 | 1522 |
09/01/2000 | 2000 | 09/05/2000 | 1636 |
12/26/2000 | 2343 | 01/02/2001 | 1713 |
01/12/2001 | 1900 | 01/15/2001 | 1542 |
Subject: | SGP/MWR/B5 - Missing data |
DataStreams: | sgpmwrlosB5.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmwrlosB5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/09/2008 | 0400 | 07/11/2008 | 1600 |
07/12/2008 | 0900 | 07/14/2008 | 1400 |
Subject: | SGP/MWR/B1 - Thermal instability-- Missing data |
DataStreams: | sgp5mwravgB1.c1, sgpmwrB1.00, sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The radiometer had problem keeping the thermal stabilization when the ambient temperature exceeded 34.5 degree C. Data are missing during the times indicated. |
Measurements: | sgpmwrtipB1.a1:
sgp5mwravgB1.c1:
sgpmwrB1.00:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2008 | 0000 | 11/30/2008 | 2300 |
Subject: | SGP/MWR/C1 - Increased noise in 31.4 GHz channel |
DataStreams: | sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
Description: | The 31.4 GHz channel has been showing an increased level of noise which results in increased noise in the LWP retrievals. The instrument is tipping and all other parameters seem to be in the range. The elevate noise started in May, but it seems to have become slightly worse after summer. After November the noise level seems to have gone back to normal. |
Measurements: | sgpmwrtipC1.a1:
sgpmwrlosC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/15/2008 | 1400 | 12/16/2008 | 1100 |
Subject: | SGP/MWR/B1 - Noisy data |
DataStreams: | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | After the instrument was returned to service, the brightness temperature data came up extremely noisy. Disregard brightness temperature data as well as PWV and LWP retrievals collected during the indicated time. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/2008 | 0000 | 12/29/2008 | 0000 |
Subject: | SGP/MWR/B4 - Occasional spikes in data |
DataStreams: | sgpmwrlosB4.b1, sgpmwrtipB4.a1 |
Description: | Between 12/7 and 12/29 the 23.8-GHz brightness temperature was affected by the presence of spikes due to interference that was more active between 12/7 and 12/15 and then diminished. The spikes affect the PWV and the LWP as well. Spikes happen two or three times a day. Review the data to determine where the spikes happen and disregard or filter out the affected points. |
Measurements: | sgpmwrtipB4.a1:
sgpmwrlosB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/2006 | 1824 | 06/19/2007 | 1632 |
11/26/2007 | 1733 | 11/28/2007 | 2122 |
11/28/2007 | 2203 | 01/30/2008 | 1804 |
07/09/2008 | 0304 | 07/11/2008 | 1635 |
07/12/2008 | 0836 | 07/14/2008 | 1427 |
12/12/2008 | 1342 | 12/15/2008 | 1435 |
04/24/2004 | 2048 | 04/26/2004 | 1723 |
04/10/2009 | 0029 | 04/13/2009 | 1220 |
06/16/2009 | 0235 | 06/18/2009 | 1617 |
06/07/2003 | 0228 | 06/11/2003 | 1646 |
01/11/2004 | 0001 | 01/13/2004 | 1924 |
02/15/2004 | 0859 | 02/19/2004 | 1646 |
02/24/2004 | 1950 | 04/01/2004 | 1909 |
04/21/2004 | 2121 | 04/23/2004 | 1658 |
05/31/2005 | 2000 | 06/02/2005 | 1446 |
09/17/2005 | 1949 | 09/19/2005 | 1336 |
12/31/2005 | 0033 | 01/03/2006 | 1420 |
02/06/2006 | 0907 | 02/08/2006 | 1651 |
04/28/2006 | 1421 | 05/01/2006 | 1411 |
07/22/2006 | 0557 | 07/27/2006 | 1338 |
07/26/1999 | 1859 | 08/01/1999 | 1449 |
09/05/1999 | 0300 | 09/09/1999 | 1350 |
12/16/2000 | 0000 | 12/18/2000 | 2202 |
01/14/2001 | 1245 | 01/16/2001 | 1543 |
02/02/2001 | 1717 | 02/05/2001 | 1627 |
07/13/2001 | 2059 | 07/17/2001 | 1840 |
07/20/2001 | 1700 | 07/22/2001 | 1930 |
01/20/2003 | 0259 | 01/23/2003 | 1632 |
01/24/2003 | 1713 | 03/06/2003 | 2033 |
05/13/2003 | 0240 | 05/15/2003 | 1618 |
05/26/2003 | 0142 | 05/29/2003 | 1608 |
Subject: | SGP/MWR/B1 - Missing data |
DataStreams: | sgpmwrlosB1.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/2008 | 1500 | 11/03/2008 | 1759 |
01/12/2009 | 1900 | 01/29/2009 | 1600 |
Subject: | SGP/MWR/B6 - Loss of thermal stabilization |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | Data are erratic due to loss of thermal stabilization of the instrument. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2009 | 1300 | 01/16/2009 | 0500 |
Subject: | SGP/MWR/B1 - Noisy data |
DataStreams: | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | After a software crash data were very noisy. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2009 | 0000 | 09/01/2009 | 0000 |
Subject: | SGP/MWR/B1 - Increased noise level |
DataStreams: | sgpmwrlosB1.b1, sgpmwrtipB1.a1 |
Description: | The radiometer was experiencing intermittent increase in the noise level of the two channels. Although it looks like the radiometer was still able to calibrate, the increased noise level may have resulted in a reduced number of tip curves collected. The increased noise was intermittent and lasted for a few hours at a time. |
Measurements: | sgpmwrtipB1.a1:
sgpmwrlosB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/1999 | 1959 | 07/27/1999 | 1624 |
07/30/1999 | 1800 | 08/03/1999 | 1550 |
06/24/2000 | 2041 | 06/26/2000 | 1911 |
07/22/2000 | 2355 | 07/24/2000 | 1752 |
07/29/2000 | 2317 | 07/31/2000 | 1813 |
08/04/2000 | 1807 | 08/07/2000 | 1932 |
08/09/2000 | 2042 | 09/20/2000 | 0007 |
10/31/2000 | 2050 | 11/02/2000 | 1710 |
01/23/2001 | 2215 | 01/29/2001 | 1739 |
02/10/2001 | 0007 | 02/12/2001 | 1822 |
10/06/2001 | 2332 | 10/09/2001 | 1749 |
11/09/2001 | 2357 | 11/13/2001 | 2111 |
04/13/2002 | 1758 | 04/15/2002 | 1838 |
01/24/2003 | 1130 | 01/30/2003 | 1759 |
04/11/2003 | 1130 | 04/14/2003 | 1603 |
05/23/2003 | 1130 | 05/27/2003 | 2138 |
06/14/2003 | 1130 | 06/17/2003 | 1541 |
06/27/2003 | 1130 | 06/30/2003 | 1553 |
07/12/2003 | 1131 | 07/15/2003 | 1551 |
09/14/2003 | 0200 | 09/16/2003 | 2006 |
06/23/2006 | 2158 | 06/28/2006 | 1710 |
07/02/2006 | 0213 | 07/05/2006 | 2126 |
07/26/2006 | 1108 | 08/04/2006 | 1515 |
08/09/2006 | 0405 | 08/11/2006 | 1649 |
08/26/2006 | 0809 | 08/29/2006 | 1947 |
09/08/2006 | 1520 | 09/12/2006 | 2138 |
09/20/2006 | 0600 | 08/02/2007 | 1825 |
10/24/2007 | 1451 | 10/26/2007 | 1625 |
04/10/2008 | 1040 | 04/14/2008 | 1308 |
11/03/2008 | 1714 | 01/12/2009 | 1737 |
Subject: | SGP/MWR/B6 - Missing data |
DataStreams: | sgpmwrlosB6.b1, sgpmwrtipB6.a1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgpmwrlosB6.b1:
sgpmwrtipB6.a1:
|