HD(CP)2 long term observations, path of integrated cloud liquid water data of Microwave radiometer (no. 00), by Supersite LACROS, data version 00
Microwave radiometer retrieved clwvi
Access
To get a year dataset please use one of the links below to download the wget script:
2011, 2012, 2013, 2014, 2015, 2016,
Dataset Author
Ulrich Loehnert (loehnert@meteo.uni-koeln.de), Institution: Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyDescription
The used microwave radiometer HATPRO has seven K band (22.235-31.4 GHz) channels that are sensitive to the humidity profile (hua), the path integrated amount of cloud liquid water (clwvi) and the path integrated amount of water vapor (prw). These files contain clwvi as a function of measurement time, elevation and azimuth angle observing direction. clwvi is based on multi-variate regression retrievals. Provided uncertainties describe the expected standard error of prw. Note, that clwvi values are given for all available times so that it is up to the user to decide whether or not to use the values if quality flags are set. Additionally included are temperature, pressure and humidity at the instrument location as well quality flags characterizing the instrument and retrieval performance.
Limitations: none
Provenance: none
Comments: clwvi errors are given as a function of retrieval elevation angle. Note, observations may occur at different angles (interpolation).
Instrument 1
- Source: RPG Microwave Radiometer HATPRO, Generation 2
- Descriptive Instrument location: The instrument is part of the LACROS facility that is operated in the area around TROPOS in Leipzig.
Global information
- PID: de.koeln.rrzk/amd.de.sups/lac.mwr00.l2.clwvi
- Project: HD(CP)2
- Level: 2
- Updated version: 00
- File format: NETCDF3_CLASSIC
- Convention: CF-1.6
- Average File Size Uncompressed: 2 Mb
- File name: sups_lac_mwr00_l2_clwvi_v[VV]_[YYYYMMDDhhmmss].nc
- Start: 2011-02-09
- End: 2016-09-23
Variables
| Name | Dimension | CF standard_name | long_name | Unit |
|---|---|---|---|---|
| clwvi | time | atmosphere_cloud_liquid_water_content | none | kg m-2 |
| clwvi_err | n_ret | none | standard error of atmosphere cloud liquid water content at retrieval elevation angle | kg m-2 |
| clwvi_off_zenith | time | none | off zenith path integrated liquid water | kg m-2 |
| clwvi_off_zenith_offset | time | none | off zenith path integrated liquid water offset correction based on brightness temperature offset | kg m-2 |
| clwvi_offset | time | none | atmosphere_cloud_liquid_water_content offset correction based on brightness temperature offset | kg m-2 |
| clwvi_offset_zeroing | time | none | atmosphere_cloud_liquid_water_content clear sky zeroing offset correction | kg m-2 |
| zsl | none | altitude | altitude above mean sea level | m |
Institution
Contact Person(s)
Patric Seifert (seifert@tropos.de)
References
S. Crewell and U. Loehnert,Accuraccy of cloud liquid water path from ground-based microwave radiometry. Part I. Dependency on Cloud model statistics.