气候变化领域集成服务门户(CCPortal): Uncertainty of Tropical Cyclone Wind Radii on Sea Surface Temperature Cooling

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DOI	10.1029/2021JD034857
	Uncertainty of Tropical Cyclone Wind Radii on Sea Surface Temperature Cooling
	Pun I.-F.; Knaff J.A.; Sampson C.R.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:14
英文摘要	The sea surface temperature (SST) beneath a tropical cyclone (TC) is of great importance to its dynamics; therefore, understanding and accurately estimating the magnitude of SST cooling is of vital importance. Existing studies have explored important influences on SST of TC translation speed, maximum surface winds, ocean thermal condition, and ocean stratification. But the influence of the TC wind radii (or collectively called the TC size) on SST has been largely overlooked. In this study, we assess the influence of wind radii uncertainty on SST cooling by a total of 15,983 numerical simulations for the western North Pacific during the 2014–2018 seasons. Results show a 6%–20% SST cooling error induced using wind radii from the Joint Typhoon Warning Center official forecast and a 35%–40% SST cooling error using wind radii from the operational runs of the Hurricane Weather Research and Forecasting (HWRF) model. Our results indicate that SST cooling is most sensitive to the radius of 64 kt winds (R64) due to its effects on the integrated kinetic energy of the TC and subsequent mixing of the ocean surface layer. It is also found that the correlation between SST cooling induced by the TC and its size is 0.49, which is the highest among all the parameters tested. This suggests that it is extremely important to get TC size correct in order to predict the SST cooling response, which then impacts TC evolution in numerical weather prediction models. © 2021. American Geophysical Union. All Rights Reserved.
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237133
作者单位	Graduate Institute of Hydrological and Oceanic Sciences, National Central University, Taoyuan, Taiwan; NOAA Center for Satellite Applications and Research, Fort Collins, CO, United States; Naval Research Laboratory, Monterey, CA, United States
推荐引用方式 GB/T 7714	Pun I.-F.,Knaff J.A.,Sampson C.R.. Uncertainty of Tropical Cyclone Wind Radii on Sea Surface Temperature Cooling[J],2021,126(14).
APA	Pun I.-F.,Knaff J.A.,&Sampson C.R..(2021).Uncertainty of Tropical Cyclone Wind Radii on Sea Surface Temperature Cooling.Journal of Geophysical Research: Atmospheres,126(14).
MLA	Pun I.-F.,et al."Uncertainty of Tropical Cyclone Wind Radii on Sea Surface Temperature Cooling".Journal of Geophysical Research: Atmospheres 126.14(2021).