DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|
D120214.1 | TWP/VDIS/C3 - Missing data | twpvdisdropsC3.b1, twpvdisC3.b1 | Missing |
D121206.1 | TWP/VDIS/C1 - Missing data | twpvdisdropsC1.b1, twpvdisC1.b1 | Missing |
D131018.4 | TWP/VDIS/C1 - Lightbulb failures | twpvdisdropsC1.b1, twpvdisC1.b1 | Incorrect |
D140106.1 | TWP/VDIS/C3 - Missing data | twpvdisdropsC3.b1, twpvdisC3.b1 | Missing |
D140317.2 | TWP/VDIS/C1/C3 - Reprocessing Notice (RID 1104) | twpvdisC1.b1, twpvdisC3.b1 | Does not affect quality |
D140410.1 | TWP/VDIS/C1 - poor alignment or failed light source resulted in loss of data | twpvdisdropsC1.b1, twpvdisC1.b1 | Missing |
Subject: | TWP/VDIS/C1 - Lightbulb failures |
DataStreams: | twpvdisdropsC1.b1, twpvdisC1.b1
|
Description: | VDIS was not comparing well to the local MET TBRG at C1. Most weeks had mulitple days that
were above/below the allowable +/-50% difference between the VDIS and the MET. Several
days had no data recorded as well.
Sample July/August differences:
-7/1 VDIS recording 163% of MET TBRG
-7/2 VDIS recording 2% of MET TBRG
-7/5 no data found
-7/6 VDIS recording 191% of MET TBRG
-7/10 VDIS recording 2% of MET TBRG
-7/11 no data found
-7/12 VDIS recording 6% of MET TBRG
-7/17 VDIS recording 37% of MET TBRG
-7/26 no data found
-7/27 VDIS recording 0% of MET TBRG
-7/28 VDIS recording 0.16% of MET TBRG
-8/2 no data found
-8/12 VDIS recording 33% of MET TBRG
-8/13 VDIS recording 0% of MET TBRG
-8/16 VDIS recording 13% of MET TBRG
-8/17-8/18, 8/22-8/23 no data found
-8/19 VDIS recording 1% of MET TBRG
-8/21 VDIS recording 45% of MET TBRG
-8/24-8/25 no data found
The instrument was having light bulb problems. Repaired and calibrationed in October
2013. |
Measurements: | twpvdisdropsC1.b1: - Drop volume(drop_volume)
- Fall speed(fall_speed)
- Individual drop width as measured by camera B(drop_width_b)
- Individual drop width as measured by camera A(drop_width_a)
- Oblateness(oblateness)
- area
- Individual drop height as measured by camera B(drop_height_b)
- Individual drop height as measured by camera A(drop_height_a)
- Equivolumetric sphere diameter(equivolumetric_sphere_diameter)
twpvdisC1.b1: - Retrieved Liquid Water Content(liquid_water_content)
- Intercept parameter, assuming an ideal Marshall-Palmer type distribution(intercept_parameter)
- radar_reflectivity
- Rain amount(rain_amount)
- Number density(num_density)
- diameter_max
- Moment 1 from the observed distribution(moment1)
- Moment 5 from the observed distribution(moment5)
- Median volume diameter, assuming an ideal Marshall-Palmer type distribution(median_volume_diameter)
- Moment 4 from the observed distribution(moment4)
- Moment 3 from the observed distribution(moment3)
- Moment 2 from the observed distribution(moment2)
- Liquid water distribution mean, assuming an ideal Marshall-Palmer type
distribution(liquid_water_distribution_mean) - drop_diameter
- Moment 6 from the observed distribution(moment6)
- Number of drops per bin(num_drops)
- Slope parameter, assuming an ideal Marshall-Palmer type distribution(slope_parameter)
- diameter_min
- Rainfall rate(rain_rate)
|