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journal article Open Access Jan 17, 2018

Precipitation, Convective Clouds, and Their Connections With Tropical Cyclone Intensity and Intensity Change

Zhenxin Ruan ORCID Qiaoyan Wu ORCID
Geophysical Research Letters Vol. 45 No. 2 pp. 1098-1105 · American Geophysical Union (AGU)
View at Publisher Save 10.1002/2017gl076611
Abstract
AbstractIn this paper, satellite‐based precipitation, clouds with infrared (IR) brightness temperature (BT), and tropical cyclone (TC) data from 2000 to 2015 are used to explore the relationship between precipitation, convective cloud, and TC intensity change in the Western North Pacific Ocean. An IR BT of 208 K was chosen as a threshold for deep convection based on different diurnal cycles of IR BT. More precipitation and colder clouds with 208 K < IR BT < 240 K are found as storms intensify, while TC 24 h future intensity change is closely connected with very deep convective clouds with IR BT < 208 K. Intensifying TCs follow the occurrence of colder clouds with IR BT < 208 K with greater areal extents. As an indicator of very deep convective clouds, IR BT < 208 K is suggested to be a good predictor of TC intensity change. Based upon the 16 year analysis in the western North Pacific, TCs under the conditions that the mean temperature of very deep convective clouds is less than 201 K, and the coverage of this type of clouds is more than 27.4% within a radius of 300 km of the TC center, will more likely undergo rapid intensification after 24 h.
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Cited By
34
Precipitation‐Driven Thickening and Wind‐Induced Erosion of the Ocean Barrier Layer Under Tropical Cyclones

Dijia Wu, Chunzai Wang · 2026

Geophysical Research Letters
Metrics
34
Citations
26
References
Details
Published
Jan 17, 2018
Vol/Issue
45(2)
Pages
1098-1105
License
View
Authors
Z
Zhenxin Ruan

College of Ocean and Earth Sciences Xiamen University Xiamen China; State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography Hangzhou China

Q
Qiaoyan Wu

State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography Hangzhou China

Funding
National Natural Science Foundation of China Award: 41722601
Cite This Article
Zhenxin Ruan, Qiaoyan Wu (2018). Precipitation, Convective Clouds, and Their Connections With Tropical Cyclone Intensity and Intensity Change. Geophysical Research Letters, 45(2), 1098-1105. https://doi.org/10.1002/2017gl076611
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