Volume 147, Issue 739 p. 3394-3409
RESEARCH ARTICLE

Classifying precipitation from GEO satellite observations: Prognostic model

Shruti A. Upadhyaya

Corresponding Author

Shruti A. Upadhyaya

Cooperative Institute for Mesoscale Meteorological Studies, Norman, Oklahoma, USA

Advanced Radar Research Center, University of Oklahoma, Norman, Oklahoma, USA

Correspondence

P.-E. Kirstetter, School of Meteorology, University of Oklahoma, 120 David L Boren Blvd, Room 4616, Norman, OK, USA.

Email: [email protected]

S.A. Upadhyaya, Cooperative Institute for Mesoscale Meteorological Studies, 120 David L Boren Blvd, Room 4603, Norman, OK, USA.

Email: [email protected]

Contribution: Conceptualization, Data curation, Formal analysis, ​Investigation, Methodology, Validation, Visualization, Writing - original draft

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Pierre-Emmanuel Kirstetter

Corresponding Author

Pierre-Emmanuel Kirstetter

Advanced Radar Research Center, University of Oklahoma, Norman, Oklahoma, USA

School of Meteorology, University of Oklahoma, Norman, Oklahoma, USA

School of Civil Engineering and Environmental Science, University of Oklahoma, Norman, Oklahoma, USA

NOAA/National Severe Storms Laboratory, Norman, Oklahoma, USA

Correspondence

P.-E. Kirstetter, School of Meteorology, University of Oklahoma, 120 David L Boren Blvd, Room 4616, Norman, OK, USA.

Email: [email protected]

S.A. Upadhyaya, Cooperative Institute for Mesoscale Meteorological Studies, 120 David L Boren Blvd, Room 4603, Norman, OK, USA.

Email: [email protected]

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Robert J. Kuligowski

Robert J. Kuligowski

NOAA/NESDIS/Center for Satellite Applications and Research, College Park, Maryland, USA

Contribution: Data curation, Resources, Writing - review & editing

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Jonathan J. Gourley

Jonathan J. Gourley

NOAA/National Severe Storms Laboratory, Norman, Oklahoma, USA

Contribution: Funding acquisition, Writing - review & editing

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Heather M. Grams

Heather M. Grams

NOAA/National Severe Storms Laboratory, Norman, Oklahoma, USA

Contribution: ​Investigation, Methodology, Writing - review & editing

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First published: 19 July 2021
Citations: 3

Funding information: NOAA GOES-R Series Risk Reduction program, NA16OAR4320115; NASA Global Precipitation Measurement Ground Validation program, NNX16AL23G; NASA Precipitation Measurement Missions program, 80NSSC19K0681

Abstract

Precipitation is one of the most important components of the global water and energy cycles, which together regulate the climate system. Future changes in precipitation patterns related to climate change are likely to have the greatest impacts on society. The new generation of geostationary Earth orbit (GEO) satellites provide high-resolution observations and opportunities to improve our understanding of precipitation processes. This study contributes to improved precipitation characterization and retrievals from space by identifying precipitation types (e.g., convective and stratiform) with multispectral observations from the Advanced Baseline Imager (ABI) sensor onboard the GOES-16 satellite. A machine-learning-based classification model is developed by deriving a comprehensive set of features using five ABI channels and numerical weather prediction observations, and trained with the Ground Validation Multi-Radar/Multi-Sensor (GV-MRMS) system as a benchmark. The developed prognostic model shows skillful performance in identifying the occurrence/nonoccurrence of precipitation (accuracy of 97%; Kappa coefficient of 0.9) and precipitation processes, with overall classification accuracy of 76% and Kappa coefficient of 0.56. Challenges exist in separating convective and tropical from other precipitation types. It is suggested to utilize probabilities instead of deterministically separating precipitation types, especially in regions with uncertain classifications.

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