Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations

Locally-originated typhoons in the South China Sea (SCS) are characterized by long duration, complex track, and high probability of landfall, which tend to cause severe wind, rainstorm, and flood disasters in coastal regions. Therefore, it is of great significance to conduct research on typhoon prec...

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Main Authors: Xingtao Huang, Zuhang Wu, Yanqiong Xie, Yun Zhang, Lifeng Zhang, Hepeng Zheng, Wupeng Xiao
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Remote Sensing
Subjects:
Online Access:https://www.mdpi.com/2072-4292/15/10/2657
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author Xingtao Huang
Zuhang Wu
Yanqiong Xie
Yun Zhang
Lifeng Zhang
Hepeng Zheng
Wupeng Xiao
author_facet Xingtao Huang
Zuhang Wu
Yanqiong Xie
Yun Zhang
Lifeng Zhang
Hepeng Zheng
Wupeng Xiao
author_sort Xingtao Huang
collection DOAJ
description Locally-originated typhoons in the South China Sea (SCS) are characterized by long duration, complex track, and high probability of landfall, which tend to cause severe wind, rainstorm, and flood disasters in coastal regions. Therefore, it is of great significance to conduct research on typhoon precipitation microphysics in the SCS. Using GPM satellite observations, the precipitation microphysics of typhoons in the SCS are analyzed by combining case and statistical studies. The precipitation of Typhoon Ewiniar (2018) in the SCS is found to be highly asymmetric. In the eyewall, the updraft is strong, the coalescence process of particles is distinct, and the precipitation is mainly concentrated in large raindrops. In the outer rainbands, the “bright-band” of melting layer is distinct, the melting of ice particles and the evaporation of raindrops are distinct, and there exist a few large raindrops in the precipitation. Overall, the heavy precipitation of typhoons in the SCS is composed of higher concentration of smaller raindrops than that in the western Pacific (WP), leading to a more “oceanic deep convective” feature of typhoons in the SCS. While the heavy precipitation of typhoons in the SCS is both larger in drop size and number concentration than that in the North Indian Ocean (NIO), leading to more abundant rainwater of typhoons in the SCS. For the relatively weak precipitation (R < 10 mm h<sup>−1</sup>), the liquid water path (LWP) of typhoons in the SCS is higher than that of the NIO, while the ice water path (IWP) of the locally-originated typhoons in the SCS is lower than that of the WP. For the heavy precipitation (R ≥ 10 mm h<sup>−1</sup>), the LWP and IWP of typhoons in the SCS are significantly higher than those in the WP and NIO.
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spelling doaj.art-ac0a8e2fe3944aba87c48b1a1a339a792023-11-18T03:08:18ZengMDPI AGRemote Sensing2072-42922023-05-011510265710.3390/rs15102657Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite ObservationsXingtao Huang0Zuhang Wu1Yanqiong Xie2Yun Zhang3Lifeng Zhang4Hepeng Zheng5Wupeng Xiao6Department of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaDepartment of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaDepartment of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaDepartment of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaDepartment of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaDepartment of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaDepartment of Atmosphere Science and Engineering, College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaLocally-originated typhoons in the South China Sea (SCS) are characterized by long duration, complex track, and high probability of landfall, which tend to cause severe wind, rainstorm, and flood disasters in coastal regions. Therefore, it is of great significance to conduct research on typhoon precipitation microphysics in the SCS. Using GPM satellite observations, the precipitation microphysics of typhoons in the SCS are analyzed by combining case and statistical studies. The precipitation of Typhoon Ewiniar (2018) in the SCS is found to be highly asymmetric. In the eyewall, the updraft is strong, the coalescence process of particles is distinct, and the precipitation is mainly concentrated in large raindrops. In the outer rainbands, the “bright-band” of melting layer is distinct, the melting of ice particles and the evaporation of raindrops are distinct, and there exist a few large raindrops in the precipitation. Overall, the heavy precipitation of typhoons in the SCS is composed of higher concentration of smaller raindrops than that in the western Pacific (WP), leading to a more “oceanic deep convective” feature of typhoons in the SCS. While the heavy precipitation of typhoons in the SCS is both larger in drop size and number concentration than that in the North Indian Ocean (NIO), leading to more abundant rainwater of typhoons in the SCS. For the relatively weak precipitation (R < 10 mm h<sup>−1</sup>), the liquid water path (LWP) of typhoons in the SCS is higher than that of the NIO, while the ice water path (IWP) of the locally-originated typhoons in the SCS is lower than that of the WP. For the heavy precipitation (R ≥ 10 mm h<sup>−1</sup>), the LWP and IWP of typhoons in the SCS are significantly higher than those in the WP and NIO.https://www.mdpi.com/2072-4292/15/10/2657typhoonsSouth China Sealocally originatedGPM satelliteprecipitation microphysics
spellingShingle Xingtao Huang
Zuhang Wu
Yanqiong Xie
Yun Zhang
Lifeng Zhang
Hepeng Zheng
Wupeng Xiao
Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations
Remote Sensing
typhoons
South China Sea
locally originated
GPM satellite
precipitation microphysics
title Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations
title_full Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations
title_fullStr Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations
title_full_unstemmed Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations
title_short Precipitation Microphysics of Locally-Originated Typhoons in the South China Sea Based on GPM Satellite Observations
title_sort precipitation microphysics of locally originated typhoons in the south china sea based on gpm satellite observations
topic typhoons
South China Sea
locally originated
GPM satellite
precipitation microphysics
url https://www.mdpi.com/2072-4292/15/10/2657
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