DQR ID | Subject | Data Streams Affected |
---|---|---|
D061024.1 | NIM/TSI/M1 - Shadowband glare | nimtsiskycoverM1.b1 |
D070514.3 | NIM/RWP/M1 - Reprocess: Wind direction offset | nim915rwpwindconM1.a1 |
D080304.3 | NIM/MET/M1 - ORG underestimated precipitation | nimmetM1.b1 |
D080428.6 | NIM/MET/M1/S1 - Reprocess: ORG Data has very small rainrate values | nimmetS1.b1 |
D081022.11 | NIM/MET/M1 - Wind Speed data contain offset due to induced voltage | nimmetM1.b1 |
D081022.12 | NIM/MET/S1 - Wind Speed data contain offset due to induced voltage | nimmetS1.b1 |
D100216.3 | NIM/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields | nimvceil25kM1.b1 |
D130703.4 | NIM/TSI/M1 - Data processing problem | nimtsiskycoverM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/17/2006 | 1310 | 11/01/2006 | 0700 |
Subject: | NIM/TSI/M1 - Shadowband glare |
DataStreams: | nimtsiskycoverM1.b1 |
Description: | When the neutral density filter was removed from the lens, the reflection of the sun from the smooth shadowband strip became much brighter causing a glare in the image on clear days. To minimize this reflection, a rough surface (the "fuzzy" side of an adhesive velco strip) was placed along the length of the shadowband. |
Measurements: | nimtsiskycoverM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2006 | 0000 | 01/07/2007 | 2359 |
Subject: | NIM/RWP/M1 - Reprocess: Wind direction offset |
DataStreams: | nim915rwpwindconM1.a1 |
Description: | A strong wind storm on June 17, 2006 toppled the RWP antenna. After repair and reinstallation, the wind direction reported by the instrument was rotated counterclockwise 90 degrees, possibly because the antenna was installed rotated by 90 deg. This condition continued through the remainder of deployment. All wind direction values need to be increased by 90 degrees. |
Measurements: | nim915rwpwindconM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2006 | 0000 | 01/06/2007 | 2359 |
Subject: | NIM/MET/M1 - ORG underestimated precipitation |
DataStreams: | nimmetM1.b1 |
Description: | The ORG underestimated precipitation by about 38% during the entire NIM deployment. No troubleshooting technique or replacement of gauge was successful in correcting the problem. |
Measurements: | nimmetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/2005 | 0000 | 12/08/2006 | 2359 |
Subject: | NIM/MET/M1/S1 - Reprocess: ORG Data has very small rainrate values |
DataStreams: | nimmetS1.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: | nimmetS1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2006 | 0000 | 01/07/2007 | 2359 |
Subject: | NIM/MET/M1 - Wind Speed data contain offset due to induced voltage |
DataStreams: | nimmetM1.b1 |
Description: | The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s. |
Measurements: | nimmetM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/2005 | 0000 | 12/08/2006 | 2359 |
Subject: | NIM/MET/S1 - Wind Speed data contain offset due to induced voltage |
DataStreams: | nimmetS1.b1 |
Description: | The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s. |
Measurements: | nimmetS1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/23/2005 | 0000 | 01/07/2007 | 2359 |
Subject: | NIM/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields |
DataStreams: | nimvceil25kM1.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. |
Measurements: | nimvceil25kM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/24/2005 | 0000 | 01/07/2007 | 2359 |
Subject: | NIM/TSI/M1 - Data processing problem |
DataStreams: | nimtsiskycoverM1.b1 |
Description: | Values of count_opaque and count_thin are reals but should be integers (units = pixels). |
Measurements: | nimtsiskycoverM1.b1:
|