Retrieval of tropospheric water vapour by using spectra of a 22 GHz radiometer

Bleisch, René; Kämpfer, Niklaus; Haefele, Alexander (2011). Retrieval of tropospheric water vapour by using spectra of a 22 GHz radiometer. Atmospheric Measurement Techniques (AMT), 4(9), pp. 1891-1903. Göttingen: Copernicus Publications 10.5194/amt-4-1891-2011

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In this paper, we present an approach to retrieve tropospheric water vapour profiles from pressure broadened emission spectra at 22 GHz, measured by a ground based microwave radiometer installed in the south of Bern at 905 m. Classical microwave instruments concentrating on the troposphere observe several channels in the center and the wings of the water vapour line (20–30 Ghz), whereas our retrieval approach uses spectra with a bandwidth of 1 GHz and a high resolution around the center of the 22 GHz water vapour line. The retrieval is sensitive up to 7 km with a vertical resolution of 3–5 km. Comparisons with profiles from operational balloon soundings, performed at Payerne, 40 km away from the radiometer location, showed a good agreement up to 7 km with a correlation of above 0.8. The retrievals shows a wet bias of 10–20% compared to the sounding.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Bleisch, René and Kämpfer, Niklaus

ISSN:

1867-1381

Publisher:

Copernicus Publications

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:27

Last Modified:

05 Dec 2014 10:16

Publisher DOI:

10.5194/amt-4-1891-2011

Web of Science ID:

000295367700012

BORIS DOI:

10.7892/boris.10139

URI:

https://boris.unibe.ch/id/eprint/10139 (FactScience: 215985)

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