| DQR ID | Subject | Data Streams Affected |
|---|
| D020927.1 | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
| D040525.29 | SGP/MPL/C1 - Metadata errors | sgpmplcbh1scottC1.c1 |
| D100519.1 | SGP/ARSCL/C1 - Ceilometer not used during processing | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
| D970408.3 | Continuing signal degradation | sgpmplC1.a1, DsgpmplC1.00, sgpmplcbh1scottC1.c1 |
| D990224.1 | SGP/MPL - Missing data due to blown detector | sgpmplC1.a1, DsgpmplhrC1.00, sgpmplnor1campC1.c1, sgpmplcbh1scottC1.c1 |
| Subject: | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities |
| DataStreams: | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1
|
| Description: | Prior to February 4, 2000, the ARSCL data set incorporated data from the
Beaufort Laser Ceilometer as one of its inputs. Because of the BLC's
high spatial resolution, this data was often chosen by ARSCL as the
"CloudBaseBestEstimate" for boundary layer clouds. It was subsequently
determined that the BLC cloud base was biased, with the BLC reporting
cloud base heights that are 122 meters too high.
The bias error will be corrected when the entire ARSCL data set is
reprocessed as part of release_4. (The release version number is included
the the netCDF global comments). This reprocessing will also include a
small correction the the MMCR near-field reflectivities. This correction
is less than 1 dB except for hydrometers within 200 meters of the surface.
Thanks to Roger Marchand for helping bracket this problem. |
| Measurements: | sgparsclbnd1clothC1.c1: - LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
sgparscl1clothC1.c1: - BLC/VCEIL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseCeilometerCloth)
- Cloud, reflectivity, at altitude(Reflectivity)
- MMCR Reflectivity, Best estimate, Hydrometer(ReflectivityBestEstimate)
- BLC/VCEIL Standard Algorithm Cloud Base Height(CloudBaseCeilometerStd)
- LASER Cloud Base Height Best Estimate(CloudBaseBestEstimate)
sgparsclcbh1clothC1.c1: - BLC/VCEIL Clothiaux et al. Algorithm Cloud Base Height(CloudBaseCeilometerCloth)
- BLC/VCEIL Standard Algorithm Cloud Base Height(CloudBaseCeilometerStd)
|
| Subject: | Continuing signal degradation |
| DataStreams: | sgpmplC1.a1, DsgpmplC1.00, sgpmplcbh1scottC1.c1
|
| Description: | Despite recent efforts (970310-970314) by the instrument mentor, signal
degradation of the MPL has continued. The degradation has continued to the
point that the effective range of the MPL is nearing 10 km. The instrument mentor and PI
have
concluded that an overhaul of the instrument by the vendor is in order. |
| Measurements: | sgpmplcbh1scottC1.c1: - Preliminary cloud base height above ground level(cbh)
- base_time
- time_offset
- lon
- lat
- alt
sgpmplC1.a1: - lat
- lon
- Pressure, associated geometric height, at altitude, NGM model output(height)
- shots_sum
- range
- range_offset
- laser_scalar_sync_offset
- Preliminary cloud base height above ground level(preliminary_cbh)
- voltage_05
- filter_temp
- trigger_freq
- time
- max_altitude
- energy_monitor
- range_bins
- transceiver_altitude_angle
- detector_temp
- shots_summed
- deadtime_correction
- voltage_15
- alt
- property
- voltage_10
- range_bin_width
- pulse_rep
- Backscatter(backscatter)
- laser_sync_offset
- range_bin_time
- laser_temp
- time_offset
- base_time
- scalar_sync_offset
- instrument_temp
- background_signal
- total_counts
- transceiver_azimuth_angle
DsgpmplC1.00: - Development raw data stream - documentation not supported
|
| Subject: | SGP/MPL - Missing data due to blown detector |
| DataStreams: | sgpmplC1.a1, DsgpmplhrC1.00, sgpmplnor1campC1.c1, sgpmplcbh1scottC1.c1
|
| Description: | Sometime early 11/11 the detector on the
MPL-004 blew out. The Detector was replaced by Albert Mendoza.
The instrument was operational on Jan. 23, 1999.
Link this to P981119.2 that reported the blown detector and the
corrective action taken |
| Measurements: | sgpmplcbh1scottC1.c1: - Preliminary cloud base height above ground level(cbh)
- lon
- alt
- base_time
- time_offset
- lat
sgpmplC1.a1: - lon
- Pressure, associated geometric height, at altitude, NGM model output(height)
- range_offset
- laser_scalar_sync_offset
- Preliminary cloud base height above ground level(preliminary_cbh)
- filter_temp
- trigger_freq
- time
- energy_monitor
- transceiver_altitude_angle
- voltage_15
- voltage_10
- pulse_rep
- Backscatter(backscatter)
- laser_sync_offset
- range_bin_time
- laser_temp
- time_offset
- base_time
- scalar_sync_offset
- instrument_temp
- total_counts
- background_signal
- lat
- range
- shots_sum
- voltage_05
- max_altitude
- range_bins
- detector_temp
- shots_summed
- deadtime_correction
- alt
- property
- range_bin_width
- transceiver_azimuth_angle
sgpmplnor1campC1.c1: - background_signal
- energy_monitor
- alt
- Cloud base height(cloud_base_height)
- cloud_top_attenuation_flag
- Backscatter(backscatter)
- lon
- baseline_update_time
- detector_temp
- random_error
- cloud_mask_2
- cloud_mask_1
- Cloud top height(cloud_top_height)
- pulse_rep
- time_offset
- shots_summed
- lat
- instrument_temp
- base_time
- Pressure, associated geometric height, at altitude, NGM model output(height)
- laser_temp
DsgpmplhrC1.00: - Development raw data stream - documentation not supported
|