| THE ROLE OF MERIDIONAL WIND STRESS IN THE TROPICAL UNSTABLE AIR-SEA INTERACTION |
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| 作者姓名： | 房佳蓓 杨修群 |
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| 作者单位： | Department of Atmospheric Sciences，Nanjing University，Department of Atmospheric Sciences，Nanjing University |
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| 基金项目： | National Natural Science Foundation of China (40075017) |
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| 摘 要： | 1INTRODUCTIONAsshowninobservationalfacts,theevolutionofElNi駉displaysastheamplitudeexpansionandmigrationofanomalousdisturbancesinair-seacouplingsystems.Theoreticaladdressofthephenomenonhasbeenattemptedfromtheaspectofcouplingdynamics.Theresultsshowthattheair-seainteractionsystemincludesakindofunstablemode,whichispropagatingindirectionsdeterminedbyfactorsgoverningSSTchanges.Withanair-seacouplingmodel,Lau1]wasamongtheearliestpeoplewhodiscoveredunstablestationarywavemodesintheair-seaintera…
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| 关 键 词： | 风压 大气－海洋相互作用 稳定性 热带气象 |
THE ROLE OF MERIDIONAL WIND STRESS IN THE TROPICAL UNSTABLE AIR-SEA INTERACTION |
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| FANG Jia-bei and YANG Xiu-qun.THE ROLE OF MERIDIONAL WIND STRESS IN THE TROPICAL UNSTABLE AIR-SEA INTERACTION[J].Journal of Tropical Meteorology,2003,9(1):95-104. |
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| Authors: | FANG Jia-bei and YANG Xiu-qun |
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| Institution: | Department of Atmospheric Sciences, Nanjing University, Nanjing, 210093 China |
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| Abstract: | With a simple tropical coupled ocean-atmosphere model, this paper presents an analysis aiming to understand the relative role of the meridional and zonal wind stresses in the tropical unstable air-sea interaction. The roles of the zonal wind stress, the meridional wind stress and the both are considered respectively into the coupled system. It is demonstrated that the meridional component of the wind stress does not lead to any instability under the local thermal balance assumption, but it does lead to a weak instability under the sea surface temperature advection assumption. Unstable air-sea interaction is dominated by the zonal component of the wind stress, suggesting that ignoring the meridional wind stress is approximately feasible in studying the tropical unstable air-sea interaction. |
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| Keywords: | wind stress air-sea interactions instability |
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