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A concept for a satellite mission to measure cloud ice water path and ice particle size

Buehler, Stefan A. and Jimenez, C. and Evans, K. F. and Rydberg, B. and Eriksson, P. and Heymsfield, A. J. and Stubenrauch, C. and Lohmann, U. and Emde, Claudia and John, V. O. and Sreerekha, T. R. and Davis, C. P. (2007) A concept for a satellite mission to measure cloud ice water path and ice particle size. Quarterly Journal of the Royal Meteorological Society, 133, pp. 109-128. DOI: 10.1002/qj.143.

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Official URL: http://www3.interscience.wiley.com/cgi-bin/jhome/113388514

Abstract

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/m². 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.

Document Type:Article
Title:A concept for a satellite mission to measure cloud ice water path and ice particle size
Authors:
AuthorsInstitution or Email of Authors
Buehler, Stefan A.Lulea Technical Univ., Kiruna, S
Jimenez, C.Lulea Technical Univ., Kiruna, S
Evans, K. F.Univ. of Colorado, USA
Rydberg, B.Chalmers Univ. of Technology, Gothenburg, S
Eriksson, P.Chalmers Univ. of Technology, Gothenburg, S
Heymsfield, A. J.NCAR, Boulder, Colorado, USA
Stubenrauch, C.CNRS/IPSL, Palaiseau, F
Lohmann, U.ETH Zurich, Zürich, CH
Emde, ClaudiaUNSPECIFIED
John, V. O.Univ. of Miami, USA
Sreerekha, T. R.Met Office, Exeter, UK
Davis, C. P.Univ. of Edinburgh, UK
Date:2007
Journal or Publication Title:Quarterly Journal of the Royal Meteorological Society
Volume:133
DOI:10.1002/qj.143
Page Range:pp. 109-128
Status:Published
Keywords:submillimetre waves, CIWSIR, mission requirements
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Remote Sensing
Deposited By: Dr.rer.nat. Claudia Emde
Deposited On:06 Dec 2007
Last Modified:12 Dec 2013 20:28

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