Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar

A novel method for retrieving the moments of rain drop size distribution (DSD) from the dual-frequency precipitation radar (DPR) onboard the global precipitation mission satellite (GPM) is presented. The method involves the estimation of two chosen reference moments from two specific DPR products, n...

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Autores principales:	Merhala Thurai, Viswanathan Bringi, David Wolff, David A. Marks, Patrick N. Gatlin, Matthew T. Wingo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	raindrop size distributions retrieval of moments dual-frequency precipitation radar global precipitation mission Science Q
Acceso en línea:	https://doaj.org/article/0766f49fb34d4cfba01bb5410e8143a9
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id	oai:doaj.org-article:0766f49fb34d4cfba01bb5410e8143a9
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spelling	oai:doaj.org-article:0766f49fb34d4cfba01bb5410e8143a92021-11-25T18:55:25ZRetrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar10.3390/rs132246902072-4292https://doaj.org/article/0766f49fb34d4cfba01bb5410e8143a92021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/22/4690https://doaj.org/toc/2072-4292A novel method for retrieving the moments of rain drop size distribution (DSD) from the dual-frequency precipitation radar (DPR) onboard the global precipitation mission satellite (GPM) is presented. The method involves the estimation of two chosen reference moments from two specific DPR products, namely the attenuation-corrected Ku-band radar reflectivity and (if made available) the specific attenuation at Ka-band. The reference moments are then combined with a function representing the underlying shape of the DSD based on the generalized gamma model. Simulations are performed to quantify the algorithm errors. The performance of methodology is assessed with two GPM-DPR overpass cases over disdrometer sites, one in Huntsville, Alabama and one in Delmarva peninsula, Virginia, both in the US. Results are promising and indicate that it is feasible to estimate DSD moments directly from DPR-based quantities.Merhala ThuraiViswanathan BringiDavid WolffDavid A. MarksPatrick N. GatlinMatthew T. WingoMDPI AGarticleraindrop size distributionsretrieval of momentsdual-frequency precipitation radarglobal precipitation missionScienceQENRemote Sensing, Vol 13, Iss 4690, p 4690 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	raindrop size distributions retrieval of moments dual-frequency precipitation radar global precipitation mission Science Q
spellingShingle	raindrop size distributions retrieval of moments dual-frequency precipitation radar global precipitation mission Science Q Merhala Thurai Viswanathan Bringi David Wolff David A. Marks Patrick N. Gatlin Matthew T. Wingo Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar
description	A novel method for retrieving the moments of rain drop size distribution (DSD) from the dual-frequency precipitation radar (DPR) onboard the global precipitation mission satellite (GPM) is presented. The method involves the estimation of two chosen reference moments from two specific DPR products, namely the attenuation-corrected Ku-band radar reflectivity and (if made available) the specific attenuation at Ka-band. The reference moments are then combined with a function representing the underlying shape of the DSD based on the generalized gamma model. Simulations are performed to quantify the algorithm errors. The performance of methodology is assessed with two GPM-DPR overpass cases over disdrometer sites, one in Huntsville, Alabama and one in Delmarva peninsula, Virginia, both in the US. Results are promising and indicate that it is feasible to estimate DSD moments directly from DPR-based quantities.
format	article
author	Merhala Thurai Viswanathan Bringi David Wolff David A. Marks Patrick N. Gatlin Matthew T. Wingo
author_facet	Merhala Thurai Viswanathan Bringi David Wolff David A. Marks Patrick N. Gatlin Matthew T. Wingo
author_sort	Merhala Thurai
title	Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar
title_short	Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar
title_full	Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar
title_fullStr	Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar
title_full_unstemmed	Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar
title_sort	retrieving rain drop size distribution moments from gpm dual-frequency precipitation radar
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0766f49fb34d4cfba01bb5410e8143a9
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Retrieving Rain Drop Size Distribution Moments from GPM Dual-Frequency Precipitation Radar

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