HD(CP)2 long term observations, path of integrated water vapor data of Microwave radiometer (no. 00), by Supersite JOYCE, data version 01
Microwave radiometer retrieved prw
Access
To get a year dataset please use one of the links below to download the wget script:
2011, 2012, 2013, 2014, 2015, 2016, 2017,
Dataset Author
Ulrich Loehnert, ulrich.loehnert@uni-koeln.de, Institution: Research Center Juelich Institute for Energy and Climate Research IEK8Description
The used microwave radiometer TOPHAT 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 prw as a function of measurement time, elevation and azimuth angle observing direction. prw is based on multi-variate regression retrievals. Provided uncertainties describe the expected standard error of prw. Note, that prw 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. For details on TOPHAT at the JOYCE supersite please refer to http://gop.meteo.uni-koeln.de/ag_crewell/doku.php?id=instruments:tophat:tophat. TOPHAT was installed at JOYCE on 22.7.2010 as has been measuring in a 24/7 mode since then.
Limitations: none
Provenance: MWR is part of JOYCE, data processed by IMGK, University of Cologne
Comments: prw errors are given as a function of retrieval elevation angle. Note, actual observations may occur at different angles. Uncertainties are then interpolated.
Instrument 1
- Source: RPG Microwave Radiometer HATPRO, Generation 2
- Descriptive Instrument location: The instrument is located at the JOYCE supersite, on top of the roof of IEK-8 (building 5.2) of the Forschungszentrum Juelich .
Global information
- PID: de.koeln.rrzk/amd.de.sups/joy.mwr00.l2.prw
- Project: HD(CP)2
- Level: 2
- Updated version: 01
- File format: NETCDF3_CLASSIC
- Convention: CF-1.6
- Average File Size Uncompressed: 2 Mb
- File name: sups_joy_mwr00_l2_prw_v[VV]_[YYYYMMDDhhmmss].nc
- Start: 2011-01-01
- End: 2017-06-26
Variables
Name | Dimension | CF standard_name | long_name | Unit |
---|---|---|---|---|
prw | time | atmosphere_mass_content_of_water_vapor | none | kg m-2 |
prw_err | n_ret | none | These values denote the standard error of atmosphere mass content of water vapor or off zenith path integrated water vapor at the corresponding retrieval elevation angle. | kg m-2 |
prw_off_zenith | time | none | off zenith path integrated water vapor | kg m-2 |
prw_off_zenith_offset | time | none | off zenith path integrated water vapor offset correction based on brightness temperature offset | kg m-2 |
prw_offset | time | none | atmosphere_mass_content_of_water_vapor offset correction based on brightness temperature offset | kg m-2 |
zsl | none | altitude | altitude above mean sea level | m |
Institution
Contact Person(s)
Ulrich Loehnert (ulrich.loehnert@uni-koeln.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.