气候变化领域集成服务门户(CCPortal): Self-Similarity of Surface Wave Developments Under Tropical Cyclones

CCPortal

DOI	10.1029/2020JC016916
	Self-Similarity of Surface Wave Developments Under Tropical Cyclones
	Kudryavtsev V.; Yurovskaya M.; Chapron B.
发表日期	2021
ISSN	21699275
卷号	126 期号:4
英文摘要	The 2D-parametric model suggested in the companion paper is used to simulate waves under tropical cyclones (TCs). Set of equations describing both wind waves and swell evolution in space and time, is solved using the method of characteristics. Wave-ray patterns efficiently chart on how wave trains develop and travel through the TC varying wind field, to leave the storm area as swell systems. Depending on TC main characteristics—maximal wind speed (um), radius (Rm), and translation velocity (V), wave-train rays superpose to exhibit particular coherent spatial patterns of significant wave height, peak wavelength and direction. Group velocity resonance leads to the appearance of waves with abnormally high energy, further outrunning as long swell systems through the TC front sector. Yet, when the TC translation velocity exceeds a threshold value, waves cannot reach group velocity resonance, and travel backwards, to form a wake of swell systems trailing the forward moving TC. Importantly, the model solutions for TC 2D-wavefields can be parameterized using 2D self-similar universal functions. Comparisons between self-similar solutions and measurements, demonstrate a reasonable agreement to warrant scientific and practical applications. Self-similar solutions provide immediate estimates of azimuthal-radial distributions of wave parameters under TCs, solely characterized by arbitrary sets of um, Rm, and V conditions. Self-similar solutions clearly divide TCs between slow TCs, fulfilling conditions Rm/Lcr > 1, and fast TCs corresponding to Rm/Lcr < 1, where Lcr is a critical fetch. Around the region Rm/Lc = 1, group velocity resonance occurs, leading to the largest possible waves generated by a TC. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	modeling of waves under TC; self-similarity of waves under TC; tropical cyclones; wave generation
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186365
作者单位	Russian State Hydrometeorological University, St. Petersburg, Russian Federation; Marine Hydrophysical Institute, Sebastopol, Russian Federation; Laboratoired’OceanographiePhysique et Spatiale, Ifremer, Plouzane, France
推荐引用方式 GB/T 7714	Kudryavtsev V.,Yurovskaya M.,Chapron B.. Self-Similarity of Surface Wave Developments Under Tropical Cyclones[J],2021,126(4).
APA	Kudryavtsev V.,Yurovskaya M.,&Chapron B..(2021).Self-Similarity of Surface Wave Developments Under Tropical Cyclones.Journal of Geophysical Research: Oceans,126(4).
MLA	Kudryavtsev V.,et al."Self-Similarity of Surface Wave Developments Under Tropical Cyclones".Journal of Geophysical Research: Oceans 126.4(2021).