DQR ID | Subject | Data Streams Affected |
---|---|---|
D080428.3 | TWP/SMET/C3 - Reprocess: ORG Data has very small rainrate values | twpsmet60sC3.b1 |
D090129.4 | TWP/SMET/C3 - Reprocess: Station Pressure values reported in hPa instead of kPa. | twpsmet60sC3.b1 |
D090515.1 | TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees | twpsmet60sC3.b1 |
D091023.1 | TWP/SMET/C3 - Tower Lowered for Maintenance | twpsmet60sC3.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2004 | 0000 | 06/30/2010 | 2359 |
Subject: | TWP/SMET/C3 - Reprocess: ORG Data has very small rainrate values |
DataStreams: | twpsmet60sC3.b1 |
Description: | The ORG data is collected via analog signal and not digital. Therefore, we continuously collect data even when no rain is occurring. We also capture small events such as leaves, large bugs, dust, etc blowing through the measurement path. Because this discrete event occurs quickly the value is usually captured for 1 or 2 seconds. This value is then averaged to the minute producing rainrate on the order of .009 mm/hr or less. These values are not indicative of rain and should be removed from the record or summing over long periods can bias the climate record. We will reprocess the data to remove these small values. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 1850 | 01/30/2009 | 1535 |
Subject: | TWP/SMET/C3 - Reprocess: Station Pressure values reported in hPa instead of kPa. |
DataStreams: | twpsmet60sC3.b1 |
Description: | An incorrect program was entered into the datalogger. This program did not convert the station pressure from hPa to kPa. This made the values larger by a factor of 10 and caused the QC bit to be tripped. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/19/2005 | 0420 | 04/04/2009 | 0115 |
Subject: | TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees |
DataStreams: | twpsmet60sC3.b1 |
Description: | The temperature of the SMET system was biased low by 1.06 Deg C due to a non-precision resistor being used int he measurement circuit. The data will be reprocessed. Saturation Vapor pressure and Vapor pressure will have to be reprocessed also. Add 1.06 degrees to the temperature data. Correct Sat Vap Press using the Buck approximation: Es = 6.1121exp((17.502*T)/(240.97 + T) where T is the temperature in C. Correct Vapor pressure using: E = (RH*Es)/100 |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/2009 | 0045 | 09/30/2009 | 0500 |
Subject: | TWP/SMET/C3 - Tower Lowered for Maintenance |
DataStreams: | twpsmet60sC3.b1 |
Description: | The tower was lowered for annual anemometer changes. The wind data is suspect. |
Measurements: | twpsmet60sC3.b1:
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