DQR ID | Subject | Data Streams Affected |
---|---|---|
D060208.2 | SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes | sgpsondewnpnC1.b1 |
D060928.3 | SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry | sgpsondewnpnC1.b1 |
D070314.2 | SGP/MWR/C1/E14 - Freezing rain-Incorrect rain flag | sgpmwrlosC1.b1, sgpmwrlosE14.b1, sgpmwrtipC1.a1, sgpmwrtipE14.a1 |
D100729.1 | SGP/WACR/C1 - Reflectivity and Height Offsets | sgpwacrC1.b1, sgpwacrspeccmaskcopolC1.a0, sgpwacrspeccmaskxpolC1.a0 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/2006 | 0000 | 12/31/2006 | 2359 |
Subject: | SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes |
DataStreams: | sgpsondewnpnC1.b1 |
Description: | Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 2006. The radiosonde type used for the each sounding may be determined by looking the metadata variable "launch_status" in the netCDF data files. |
Measurements: | sgpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/2006 | 1728 | 12/31/9999 | 2359 |
Subject: | SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry |
DataStreams: | sgpsondewnpnC1.b1 |
Description: | The output precision of the following variables was increased 20060928 alt changed from 1m to 0.1m dp changed from 0.1degC to 0.01degC pres changed from 0.1 hPa to 0.01 hPa RH changed from 1%RH to 0.01%RH tdry changed from .1degC to 0.01degC Note that the increase in precision does not necessarily imply an increase in accuracy. Users are cautioned to continue to use their best scientific judgement when using these or any other data. |
Measurements: | sgpsondewnpnC1.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 |
---|---|---|---|
12/05/2005 | 0000 | 09/23/2008 | 2359 |
Subject: | SGP/WACR/C1 - Reflectivity and Height Offsets |
DataStreams: | sgpwacrC1.b1, sgpwacrspeccmaskcopolC1.a0, sgpwacrspeccmaskxpolC1.a0 |
Description: | The instrument vendor has informed us of a range (height) offset of 13 m and has provided an updated reflectivity calibration. All values reported for 'Reflectivity' are approximately 3 dB too low. In addition, the Reflectivity in the first and fourth range gates (starting from the surface) need to be further corrected by an additional 2.7 and -0.9 dB, respectively. The 'height' field values are 13.33 m too low. The data will be reprocessed to correct these problems. Update: The sgpwacrC1.b1 data were reprocessed to correct the height and reflectivity offsets. The corrected data were archived 20100910-20100915. |
Measurements: | sgpwacrspeccmaskcopolC1.a0:
sgpwacrspeccmaskxpolC1.a0:
sgpwacrC1.b1:
|