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Characterization of Tropical Cyclone Intensity Using the HY-2B Scatterometer Wind Data.

Characterization of Tropical Cyclone Intensity Using the HY-2B Scatterometer Wind Data.

Authors :
Liu, Siqi
Lin, Wenming
Portabella, Marcos
Wang, Zhixiong
Source :
Remote Sensing; Feb2022, Vol. 14 Issue 4, p1035, 1p
Publication Year :
2022

Abstract

The estimation of tropical cyclone (TC) intensity using Ku-band scatterometer data is challenging due to rain perturbation and signal saturation in the radar backscatter measurements. In this paper, an alternative approach to directly taking the maximum scatterometer-derived wind speed is proposed to assess the TC intensity. First, the TC center location is identified based on the unique characteristics of wind stress divergence/curl near the TC core. Then the radial extent of 17-m/s winds (i.e., R17) is calculated using the wind field data from the Haiyang-2B (HY-2B) scatterometer (HSCAT). The feasibility of HSCAT wind radii in determining TC intensity is evaluated using the maximum sustained wind speed (MSW) in the China Meteorological Administration best-track database. It shows that the HSCAT R17 value generally better correlates with the best-track MSW than the HSCAT maximum wind speed, therefore indicating the potential of using the HSCAT data to improve the TC nowcasting capabilities. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20724292
Volume :
14
Issue :
4
Database :
Complementary Index
Journal :
Remote Sensing
Publication Type :
Academic Journal
Accession number :
155713196
Full Text :
https://doi.org/10.3390/rs14041035