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A concept for a satellite mission to measure cloud ice water path, ice particle size, and cloud altitude
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Rymdteknik.ORCID-id: 0000-0001-6389-1160
Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder.
Chalmers University of Technology, Department of Radio and Space Science, Gothenburg.
Vise andre og tillknytning
2007 (engelsk)Inngår i: Quarterly Journal of the Royal Meteorological Society, ISSN 0035-9009, E-ISSN 1477-870X, Vol. 133, nr Suppl.2, 109-128 s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A passive satellite radiometer operating at submillimetre wavelengths can measure cloud ice water path (IWP), ice particle size, and cloud altitude. The paper first discusses the scientific background for such measurements. Formal scientific mission requirements are derived, based on this background and earlier assessments. The paper then presents a comprehensive prototype instrument and mission concept, and demonstrates that it meets the requirements. The instrument is a conically scanning 12-channel radiometer with channels between 183 and 664 GHz, proposed to fly in tandem with one of the Metop satellites. It can measure IWP with a relative accuracy of approximately 20% and a detection threshold of approximately 2 g m-2. The median mass equivalent sphere diameter of the ice particles can be measured with an accuracy of approximately 30 µm, and the median IWP cloud altitude can be measured with an accuracy of approximately 300 m. All the above accuracies are median absolute error values; root mean square error values are approximately twice as high, due to rare outliers.

sted, utgiver, år, opplag, sider
2007. Vol. 133, nr Suppl.2, 109-128 s.
HSV kategori
Forskningsprogram
Rymdteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-12790DOI: 10.1002/qj.143Lokal ID: bf29d0a0-8eac-11dc-a188-000ea68e967bOAI: oai:DiVA.org:ltu-12790DiVA: diva2:985741
Merknad
Validerad; 2007; 20071109 (sbuehler)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2017-10-19bibliografisk kontrollert

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