Rainband-Occurrence Probability in Northern Hemisphere Tropical Cyclones by Synthetic Aperture Radar Imagery

doi:10.1029/2023GL107555

IOCAS-IR > 海洋环流与波动重点实验室

	Rainband-Occurrence Probability in Northern Hemisphere Tropical Cyclones by Synthetic Aperture Radar Imagery
	Zheng, Gang 1,2,3,4; Jiang, Han 1; Wu, Liang 5; Li, Xiaofeng 6; Zhou, Lizhang 1; Wu, Qiaoyan 1; Chen, Peng 1; Ren, Lin 1
	2024-05-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
卷号	51 期号:10 页码:10
通讯作者	Zheng, Gang(zhenggang@sio.org.cn) ; Wu, Liang(wul@mail.iap.ac.cn)
摘要	Rainbands are essential to tropical cyclones (TCs), significantly affecting TC structure and intensity change. High-resolution synthetic aperture radar (SAR) imagery can capture the footprints of rainbands caused by rain-induced sea surface roughness modification. Using 464 SAR TC images, we investigated the rainband-occurrence probability of TCs under different hemispheres, local times (LTs), intensities, and ocean basins. Results show that the rainband-occurrence probability is highest in the downshear-left quadrant for Northern Hemisphere TCs (downshear-right quadrant for Southern Hemisphere TCs). For Northern Hemisphere TCs, the rainband-occurrence probability is overall higher in the early morning (LT), and the peak region of rainband-occurrence probability appears farther from the TC center in the evening (LT). Compared with weak TCs, the rainband-occurrence probability becomes higher for strong TCs in the Northern Hemisphere. Furthermore, TCs have a higher rainband-occurrence probability in the Northwest Pacific than in the North Atlantic and Northeast Pacific. Rainbands are a salient feature of tropical cyclones (TCs) and are closely related to TC structure and intensity change. Synthetic aperture radar (SAR) can capture the sea surface imprint of rainbands beneath clouds caused by rain-induced sea surface roughness modification. Using 464 SAR TC images, we made 464 rainband-annotated data. The data were mapped to grid nodes spaced at 0.027 times the radius of max winds in a coordinate system with the origin at the TC center and the y-axis in the vertical wind shear direction. Then, the data were composited to estimate and further investigate the rainband-occurrence probability of TCs under different hemispheres, local times (LTs), intensities, and ocean basins. Results show that the rainband-occurrence probability is highest in the downshear-left quadrant for Northern Hemisphere TCs (downshear-right quadrant for Southern Hemisphere TCs). For Northern Hemisphere TCs, the rainband-occurrence probability is overall higher in the early morning (LT), and the peak region of rainband-occurrence probability appears farther from the TC center in the evening (LT). Compared with weak TCs, the rainband-occurrence probability becomes higher for strong TCs in the Northern Hemisphere. Furthermore, TCs have a higher rainband-occurrence probability in the Northwestern Pacific than in the North Atlantic and Northeast Pacific. The sea surface imprint of tropical cyclone (TC) rainbands in many synthetic aperture radar images reveals their occurrence probability The rainband-occurrence probability is overall higher in the early morning than in the evening. The feature is more obvious in strong TCs The peak region of the probability appears farther from the TC center in the evening than in the early morning
关键词	occurrence probability rainband synthetic aperture radar (SAR) tropical cyclone (TC)
DOI	10.1029/2023GL107555
收录类别	SCI
语种	英语
资助项目	Zhejiang Provincial Natural Science Foundation of China ; National Natural Science Foundation of China[41875117] ; National Natural Science Foundation of China[42175050] ; Youth Innovation Promotion Association CAS[Y2021030] ; CAS[Y9KY04101L] ; [LR21D060002]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001221291900001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	OUTER SPIRAL RAINBANDS ; DIURNAL CYCLE ; INTENSITY CHANGE ; SEA-SURFACE ; PRECIPITATION ; RAINFALL ; MORPHOLOGY ; RADIATION ; BEHAVIOR
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185696
专题	海洋环流与波动重点实验室
通讯作者	Zheng, Gang; Wu, Liang
作者单位	1.Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Peoples R China 2.Zhejiang Univ, Ocean Coll, Zhoushan, Peoples R China 3.Hohai Univ, Coll Oceanog, Nanjing, Peoples R China 4.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 5.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Gang,Jiang, Han,Wu, Liang,et al. Rainband-Occurrence Probability in Northern Hemisphere Tropical Cyclones by Synthetic Aperture Radar Imagery[J]. GEOPHYSICAL RESEARCH LETTERS,2024,51(10):10.
APA	Zheng, Gang.,Jiang, Han.,Wu, Liang.,Li, Xiaofeng.,Zhou, Lizhang.,...&Ren, Lin.(2024).Rainband-Occurrence Probability in Northern Hemisphere Tropical Cyclones by Synthetic Aperture Radar Imagery.GEOPHYSICAL RESEARCH LETTERS,51(10),10.
MLA	Zheng, Gang,et al."Rainband-Occurrence Probability in Northern Hemisphere Tropical Cyclones by Synthetic Aperture Radar Imagery".GEOPHYSICAL RESEARCH LETTERS 51.10(2024):10.