HD(CP)2 long term observations, absolute humidity data of Microwave radiometer (no. 00), by Supersite JOYCE, data version 01
Daily files of line-of-sight absolute humidity based of 7 channel (K-band) microwave radiometer retrieval
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 (loehnert@meteo.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 hua profiles as a function of measurement time, height above ground, elevation and azimuth angle observing direction. The hua profile is based on multi-variate regression retrievals. Provided uncertainties describe the expected standard error of hua at each height. Note, that hua 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: none
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.hua
- Project: HD(CP)2
- Level: 2
- Updated version: 01
- File format: NETCDF3_CLASSIC
- Convention: CF-1.6
- Average File Size Uncompressed: 10 Mb
- File name: sups_joy_mwr00_l2_hua_v[VV]_[YYYYMMDDhhmmss].nc
- Start: 2010-07-22
- End: 2017-06-26
Variables
| Name | Dimension | CF standard_name | long_name | Unit |
|---|---|---|---|---|
| hua | time, height | absolute humidity | kg m-3 | |
| hua_err | height, n_ret | standard error of absolute humidity | kg m-3 | |
| hua_offset | time, height | absolute humidity offset correction based on brightness temperature offset | kg m-3 | |
| zsl | altitude | altitude above mean sea level | m |
Institution
Contact Person(s)
Ulrich Loehnert (loehnert@meteo.uni-koeln.de)
References
U. Loehnert, D. Turner, S. Crewell,Ground-based temperature and humidity profiling using spectral infrared and microwave observations: Part 1. Simulated retrieval performance in clear sky conditions