A compact airborne G-band (183 GHZ) water Vapour Radiometer and retrievals of liquid cloud parameters from coincident radiometer and millimeter wave radar measurements

DOIResolve DOI: http://doi.org/10.1109/MICRAD.2008.4579473
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Proceedings titleMicrowave Radiometry and Remote Sensing of the Environment, 2008. MICRORAD 2008
Conference10th Specialist Meeting on Radiometry and Remote Sensing for the Environment (MicroRad '08), March 11-14, 2008, Florence, Italy
Pages14; # of pages: 4
SubjectAirborne water vapor radiometer, Millimeter wave radiometer, Liquid water path and Precipitable water vapor retrieval
AbstractProSensing Inc. has developed a G-band (183 GHz, 1.5 mm wavelength) water Vapor Radiometer (GVR) for measuring low concentrations of atmospheric water vapor and liquid water. Using four double sideband receiver channels, the instrument measures brightness temperature at 183.31 +-1, +-3, +-7 and +-14 GHz . An airborne version of the instrument, packaged and wired to operate from a standard PMS probe canister, was successfully tested onboard the National Research Council of Canada Convair-580 aircraft during the Canadian CloudSat and CALIPSO validation flights (C3VP) through the winter of 2006-07. The Zenith G-band radiometer brightness temperature data collected with the GVR were complemented with co-located cloud reflectivity measurements with the NRC W and X-band (NAWX) radar system and in situ probes. By flying the aircraft in a stepped and porpoising ascent/descent patterns, liquid cloud water content was estimated from the GVR retrieved liquid water path. The effective radius and number density of liquid clouds were then estimated by combining the liquid water content with the W-band radar reflectivity factor (Z) and by applying a small correction factor, based on the characteristic drop size distribution shape of the observed cloud.
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AffiliationNational Research Council Canada; NRC Institute for Aerospace Research
Peer reviewedNo
NRC numberFRL-2008-0020
NPARC number8929643
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Record identifier8c0c0fd1-71f0-4f73-886c-35811c6ea33b
Record created2009-04-23
Record modified2016-05-09
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