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LMODEL: A satellite precipitation methodology using cloud development modeling. Part I: Algorithm construction and calibration

Bellerby, Tim; Hsu, Kuo Lin; Sorooshian, Soroosh

Authors

Tim Bellerby

Kuo Lin Hsu

Soroosh Sorooshian

Abstract

The Lagrangian Model (LMODEL) is a new multisensor satellite rainfall monitoring methodology based on the use of a conceptual cloud-development model that is driven by geostationary satellite imagery and is locally updated using microwave-based rainfall measurements from low earth-orbiting platforms. This paper describes the cloud development model and updating procedures; the companion paper presents model validation results. The model uses single-band thermal infrared geostationary satellite imagery to characterize cloud motion, growth, and dispersal at high spatial resolution (similar to 4 km). These inputs drive a simple, linear, semi-Lagrangian, conceptual cloud mass balance model, incorporating separate representations of convective and stratiform processes. The model is locally updated against microwave satellite data using a two-stage process that scales precipitable water fluxes into the model and then updates model states using a Kalman filter. Model calibration and updating employ an empirical rainfall collocation methodology designed to compensate for the effects of measurement time difference, geolocation error, cloud parallax, and rainfall shear.

Journal Article Type Article
Publication Date Oct 1, 2009
Journal Journal of hydrometeorology
Print ISSN 1525-755X
Electronic ISSN 1525-7541
Publisher American Meteorological Society
Peer Reviewed Peer Reviewed
Volume 10
Issue 5
Pages 1081-1095
Institution Citation Bellerby, T., Hsu, K. L., & Sorooshian, S. (2009). LMODEL: A satellite precipitation methodology using cloud development modeling. Part I: Algorithm construction and calibration. Journal of hydrometeorology, 10(5), (1081-1095). doi:10.1175/2009jhm1091.1. ISSN 1525-755X
DOI https://doi.org/10.1175/2009jhm1091.1
Keywords Atmospheric science
Publisher URL http://journals.ametsoc.org/doi/abs/10.1175/2009JHM1091.1
Copyright Statement © Copyright 2009 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (https://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyrights@ametsoc.org.
Additional Information Copy of article published in: Journal of hydrometeorology, 2009, v.10, issue 5

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Copyright Statement
© Copyright 2009 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (https://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyrights@ametsoc.org.



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