DQR ID | Subject | Data Streams Affected |
---|---|---|
D070412.1 | FKB/MET/M1 - Optical Rain Gauge Data Incorrect | fkbmetM1.b1 |
D070412.2 | FKB/MET/M1 - ORG Data incorrect during calibration | fkbmetM1.b1 |
D070417.1 | FKB/MET/M1 - Optical Rain Gauge Data Incorrect | fkbmetM1.b1 |
D071004.1 | FKB/SONDE/M1 - RH values may be slightly overcorrected. | fkbsondewnpnM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/17/2007 | 0000 | 03/17/2007 | 0600 |
04/02/2007 | 0000 | 04/02/2007 | 0800 |
04/03/2007 | 0300 | 04/03/2007 | 0800 |
04/04/2007 | 2300 | 04/05/2007 | 0900 |
04/06/2007 | 0100 | 04/06/2007 | 0800 |
04/07/2007 | 0000 | 04/07/2007 | 0700 |
04/09/2007 | 0000 | 04/09/2007 | 0800 |
04/10/2007 | 0000 | 04/10/2007 | 0700 |
04/11/2007 | 0000 | 04/11/2007 | 0700 |
Subject: | FKB/MET/M1 - Optical Rain Gauge Data Incorrect |
DataStreams: | fkbmetM1.b1 |
Description: | The Optical Raingauge (ORG) data was incorrect during the listed times. Ice/frost was forming on the lenses causing the ORG to believe there was precipitation occurring. |
Measurements: | fkbmetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/08/2007 | 0736 | 04/08/2007 | 0745 |
Subject: | FKB/MET/M1 - ORG Data incorrect during calibration |
DataStreams: | fkbmetM1.b1 |
Description: | The ORG data was incorrect during calibration checks. The check mimics a precipiation event so the precip amounts that were collected were not actually measured. |
Measurements: | fkbmetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2007 | 0000 | 04/28/2007 | 2359 |
Subject: | FKB/MET/M1 - Optical Rain Gauge Data Incorrect |
DataStreams: | fkbmetM1.b1 |
Description: | Precipitation was being reported on days with no rain. Problems with the grounding and the orientation of the receiver facing south (sunlight in the optics) caused erroneous readings. |
Measurements: | fkbmetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/11/2007 | 0430 | 09/19/2007 | 0430 |
Subject: | FKB/SONDE/M1 - RH values may be slightly overcorrected. |
DataStreams: | fkbsondewnpnM1.b1 |
Description: | The desiccant in the GC25 ground check set began to lose efficiency at the beginning of this time period. Prior to 9/11/2007 the radiosonde RH readings while in the GC25 (assumed RH=0%) were below 1%RH. The RH readings began to exceed 1%RH on 9/11/2007 and increased more or less exponentially to 2.3% RH by the end of 9/18/2007. The desiccant was changed on 9/19/2007 and the radiosonde RH values while in the GC25 again dropped within the acceptable limit (< 0.5%RH, in fact). Because the value obtained from the radiosonde while in the GC25 is subtracted from the subsequent RH values as part of the ground check procedure, it is likely that soundings done late in this period may be biased low by no more than 2%RH. The exact amount of the correction applied is included in the netCDF header of each file. |
Measurements: | fkbsondewnpnM1.b1:
|