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Partitioning of cloud water and rainwater content by ground-based observations with the Advanced Microwave Radiometer for Rain Identification (ADMIRARI) in synergy with a micro rain radar

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journal contribution
posted on 24.05.2016, 12:42 by Pablo Saavedra, Alessandro Battaglia, Clemans Simmer
[1] Cloud and rain liquid water path and total water vapor are retrieved simultaneously from passive microwave observations with the multifrequency dual-polarized Advanced Microwave Radiometer for Rain Identification (ADMIRARI). A data set of linearly polarized brightness temperatures has been collected at 30° elevation angle together with slant radar reflectivity profiles at 24.1 GHz from a micro rain radar (MRR) pointing into the same viewing direction. The slant path integrated values are retrieved via a Bayesian inversion approach, the quality of which is evaluated by a simulation-based retrieval sensitivity study. The algorithm includes a physical constraint by taking into account the rain column structural information from the MRR observations. Measurements and derived path-integrated water component estimates from 23 August to 12 November 2008, obtained in Cabauw, Netherlands, are analyzed. During raining cloud conditions the zenith-normalized root-mean-square error for water vapor, cloud liquid water path, and rain liquid water path are, on average, estimated to 1.54 kg m−2, 144 g m−2, and 52 g m−2, respectively. On the basis of these results, long-term estimated distributions of cloud water–rainwater partitioning for midlatitude precipitating clouds are presented for the first time as obtained by a ground-based radiometer.

History

Citation

Journal of Geophysical Research: Atmospheres, 2012, 117 (D5)

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

VoR (Version of Record)

Published in

Journal of Geophysical Research: Atmospheres

Publisher

Wiley for American Geophysical Union (AGU)

issn

2169-897X

eissn

2169-8996

Copyright date

2012

Available date

24/05/2016

Publisher version

http://onlinelibrary.wiley.com/doi/10.1029/2011JD016579/abstract

Language

en