DQR ID | Subject | Data Streams Affected |
---|---|---|
D050902.2 | PYE/MWRP/M1 - Bias in Ground Relative Humidity Measurement | pyemwrpM1.00, pyemwrpM1.b1 |
D050912.3 | PYE/SONDE/M1 - Bad RH sensor | pyesondewnpnM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/17/2005 | 0000 | 09/03/2005 | 0000 |
Subject: | PYE/MWRP/M1 - Bias in Ground Relative Humidity Measurement |
DataStreams: | pyemwrpM1.00, pyemwrpM1.b1 |
Description: | On June 17 2005, the MWRP was re-installed at PYE after the Super Blower was replaced by the old style dew blower. The relative humidity ground sensor in the dew blower is not as accurate. This resulted in a negative relative humidity bias of about 5.9 %. In other words the MWRP sensor was underestimating the relative humidity. The bias was determined by comparing MWRP measurements with SMET and radiosonde measurements. The MP.cfg file for the MWRP was changed to reflect this bias on 09/02/2005 and will take effect on 09/03/2005 0000 GMT |
Measurements: | pyemwrpM1.b1:
pyemwrpM1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/31/2005 | 1130 | 08/31/2005 | 1140 |
Subject: | PYE/SONDE/M1 - Bad RH sensor |
DataStreams: | pyesondewnpnM1.b1 |
Description: | The RH sensor heating circuit failed on this sounding. RH values during the first part of the sounding oscillate between a reasonable value and a very low value. It appears that (a) the heating was out of phase, and (b) incorrect values were being reported during the first 10 minutes or so of flight. |
Measurements: | pyesondewnpnM1.b1:
|