DQR ID | Subject | Data Streams Affected |
---|---|---|
D090216.3 | HFE/MET/M1 - Intermittent barometer failure | hfemetM1.b1 |
D090216.4 | HFE/MET/M1 - Intermittent PWD data | hfemetM1.b1 |
D090220.2 | HFE/MET/M1 - ORG Measuring Ice Crystals or Fog | hfemetM1.b1 |
D090220.3 | HFE/MET/M1 - Induced voltage on wind speed sensor cable | hfemetM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2159 |
Subject: | HFE/MET/M1 - Intermittent barometer failure |
DataStreams: | hfemetM1.b1 |
Description: | Intermittent barometer failure occurred throughout the deployment. We were unable to pinpoint the cause of the failure. Typically one or two minutes of missing data occurred every few days. Since pressure data is typically invariant over 1 minute, linear interpolation should be fine to fill in missing data. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2159 |
Subject: | HFE/MET/M1 - Intermittent PWD data |
DataStreams: | hfemetM1.b1 |
Description: | The Present Weather Detector had intermittent missing values throughout this deployment. Missing values occurred almost everyday, usually just one or two minutes per day. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/2008 | 1920 | 11/09/2008 | 1956 |
11/19/2008 | 2108 | 11/09/2008 | 2304 |
11/27/2008 | 1614 | 11/27/2008 | 2331 |
12/04/2008 | 1955 | 12/04/2008 | 2351 |
12/05/2008 | 0946 | 12/06/2008 | 0013 |
12/06/2008 | 1424 | 12/06/2008 | 2322 |
12/14/2008 | 1500 | 12/14/2008 | 1532 |
12/14/2008 | 1712 | 12/14/2008 | 1726 |
12/14/2008 | 1848 | 12/15/2008 | 0052 |
12/21/2008 | 0657 | 12/22/2008 | 0232 |
12/22/2008 | 0408 | 12/23/2008 | 0043 |
12/23/2008 | 1754 | 12/24/2008 | 0006 |
Subject: | HFE/MET/M1 - ORG Measuring Ice Crystals or Fog |
DataStreams: | hfemetM1.b1 |
Description: | The ORG was measuring consistent values for long periods of time. Typically this is indicative of fog, ice crystals in the air or poor performance of the lens heaters. |
Measurements: | hfemetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/19/2008 | 0000 | 12/28/2008 | 2359 |
Subject: | HFE/MET/M1 - Induced voltage on wind speed sensor cable |
DataStreams: | hfemetM1.b1 |
Description: | The cable for the wind monitor is not a twisted pair shielded cable. This caused an induced voltage on the wind sensor wires from the wind direction measurement excitation voltage. A small offset is added into the wind speeds. This value varies. Most frequently the values of 0.49, 0.588 and 0.686 m/s were added into the wind speed. On 11/27/2008 the value jumped to 0.98 m/s for most of the day. |
Measurements: | hfemetM1.b1:
|