Upper ocean response and feedback to spring weather over the kuroshio in the East China sea: A coupled atmosphere-ocean model study

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Title:	Upper ocean response and feedback to spring weather over the kuroshio in the East China sea: A coupled atmosphere-ocean model study
Authors:	林沛練;Kueh, Mien-Tze;Lin, Pay-Liam
Contributors:	地球科學學院大氣科學學系
Keywords:	Air-sea interactions;Atmosphere;China;Climatology;Cold;cold-air outbreak;Enthalpy;Feedback;Geophysics;Kuroshio;Marine;Mathematical models;Meteorology;Ocean circulation;Ocean-atmosphere interaction;Oceans;Outbreaks;Recovery;regional coupled atmosphere-ocean model;Sea surface temperature;Spring;SST diurnal variation;Thermocline;Upper ocean;upper ocean heat content;Weather;Wind;Wind speed
Date:	2015-01-01
Issue Date:	2026-04-21 14:03:13 (UTC+8)
Publisher:	Wiley-Blackwell;Washington: Blackwell Publishing Ltd
Abstract:	摘要： This study investigated the air‐sea interaction over the Kuroshio in the East China Sea by focusing on the response and feedback of the ocean to typical spring weather events. The Weather Research and Forecasting Model was coupled with the HYbrid Coordinate Ocean Model for use in the study. The study period comprised a sequence of typical weathers in the area: prevailing southwesterly winds, the passage of a cold front and the ensuing cold‐air outbreak, and the development of a Taiwan low. The air‐sea interaction operated on a diurnal time scale under conditions of moderate wind speeds, high insolation, and a shallow oceanic mixed layer. The sea surface temperature and upper ocean heat content increased progressively prior to the frontal passage. The model reproduced the retreat of Kuroshio in response to the strong wind during the cold‐air outbreak. The diurnal cycle vanished at high wind speeds. Wind stirring eroded the upper seasonal thermocline and deepened the oceanic mixed layer. The upper ocean heat content decreased because of entrainment cooling and surface heat losses. Surface restratification was subsequently suppressed in the thick and weakly stratified remnant layer. The consequently insufficient recovery of upper ocean heat content may have preconditioned a stagnation of the Taiwan low. The recovery of upper ocean heat content was discussed to derive the implication for climate simulations. Key Points Ocean gains heat in calm weather and loses heat in disturbed weather Thick and less stratified remnant layer can suppress surface re‐stratification Insufficient recovery of upper ocean heat content delays Taiwan Low development 其他題名： J. Geophys. Res. Atmos 出版者： Washington: Blackwell Publishing Ltd 出版日期： 2015-10-16 出處： Journal of geophysical research. Atmospheres, 2015-10, Vol.120 (19), p.10,091-10,115 資源來源： Wiley Online Library 版權： 2015. The Authors. 版權： 2015. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 2169-897X 識別號： ISSN: 2169-8996 識別號： EISSN: 2169-8996 識別號： DOI: 10.1002/2015JD023386
Appears in Collections:	[Department of Atmospheric Sciences] journal & Dissertation

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