A planetary-scale land-sea breeze circulation in East Asia and the western North Pacific

Wan Ru Huang, Johnny C.L. Chan, Shih Yu Wang

    研究成果: 雜誌貢獻文章同行評審

    35 引文 斯高帕斯(Scopus)

    摘要

    The diurnal wind variation over the East Asian continent is commonly considered to be a combination of a land-sea breeze near the coast and a mountain-valley breeze along the slopes of the Tibetan Plateau. The local land-sea breeze along the coastline typically spans <100 km into the ocean. However, a detailed examination of the global reanalysis data suggests that this local land-sea breeze circulation apparently couples with the global-scale diurnal atmospheric pressure tide to produce a planetary-scale land-sea breeze with a spatial scale of ~1000 km over the western North Pacific. Computations of the momentum budget and equivalent potential temperatures indicate that the atmospheric diurnal tidal wave contributes the most to this circulation feature. A diagnosis of the water vapour budget further suggests that the convergence of water vapour flux, which is related to the convergence of low-level wind induced by the seasonal change of diurnal tidal wave, leads to different times of occurrence of maximum diurnal rainfall over East Asia between summer and winter.

    原文英語
    頁(從 - 到)1543-1553
    頁數11
    期刊Quarterly Journal of the Royal Meteorological Society
    136
    發行號651
    DOIs
    出版狀態已發佈 - 2010 七月

    ASJC Scopus subject areas

    • Atmospheric Science

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