DQR ID | Subject | Data Streams Affected |
---|---|---|
D080428.2 | TWP/SMET/C1 - Reprocess: ORG Data has very small rainrate values | twpsmet60sC1.b1 |
D090527.1 | TWP/VCEIL/C1 - Compensation fiber | twpvceil25kC1.b1 |
D100215.4 | TWP/VCEIL/C1 - Reprocess: Incorrect serial_number and sum_backscatter fields | twpvceil25kC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2004 | 0000 | 06/30/2010 | 2359 |
Subject: | TWP/SMET/C1 - Reprocess: ORG Data has very small rainrate values |
DataStreams: | twpsmet60sC1.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 are reprocessing the data to remove these small values and are adjusting the collection program to remove them before ingest. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2009 | 1540 | 06/29/2009 | 0000 |
Subject: | TWP/VCEIL/C1 - Compensation fiber |
DataStreams: | twpvceil25kC1.b1 |
Description: | The VCEIL was reporting a "receiver optical cross-talk compensation is poor" warning. The window was cleaned and the instrument was power-cycled. The problem was corrected when the compensation fiber was replaced and ants were removed from communication connector. Cloud detection was impaired. |
Measurements: | twpvceil25kC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/1996 | 0000 | 10/31/2009 | 2359 |
Subject: | TWP/VCEIL/C1 - Reprocess: Incorrect serial_number and sum_backscatter fields |
DataStreams: | twpvceil25kC1.b1 |
Description: | Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. This DQR also applies to a1 level data. |
Measurements: | twpvceil25kC1.b1:
|