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Impact of land-sea breezes at different scales on the diurnal rainfall in Taiwan

机译：台湾不同尺度海陆风对日降水量的影响

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摘要

The formation mechanism of diual rainfall in Taiwan is commonly recognized as a result of local forcings involving solar thermal heating and island-scale land-sea breeze (LSB) interacting with orography. This study found that the diurnal variation of the large-scale circulation over the East Asia-Western North Pacific (EAWNP) modulates considerably the diurnal rainfall in Taiwan. It is shown that the interaction between the two LSB systems-the island-scale LSB and the large-scale LSB over EAWNP-facilitates the formation of the early morning rainfall in western Taiwan, afternoon rainfall in central Taiwan, and nighttime rainfall in eastern Taiwan. Moreover, the post-1998 strengthening of a shallow, low-level southerly wind belt along the coast of Southeast China appears to intensify the diurnal rainfall activity in Taiwan. These findings reveal the role of the large-scale LSB and its long-term variation in the modulation of local diurnal rainfall.
机译：台湾地区日降雨的形成机制是公认的，因为当地强迫包括太阳热加热和岛屿规模的陆海风（LSB）与地形相互作用。这项研究发现，东亚-西北太平洋（EAWNP）上的大尺度环流的日变化极大地调节了台湾的日降水量。结果表明，岛屿规模LSB和EAWNP上的大规模LSB这两个LSB系统之间的相互作用促进了台湾西部清晨降雨，台湾中部下午降雨和台湾东部夜间降雨的形成。此外，1998年后中国东南沿海浅水低层南风带的加强似乎加剧了台湾的日降水活动。这些发现揭示了大规模LSB的作用及其长期变化对当地日降水量的调节作用。

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  • 来源
    《Climate dynamics》 |2014年第8期|1951-1963|共13页
  • 作者

    Wan-Ru Huang; Shih-Yu Wang;

  • 作者单位

    Department of Earth Sciences, National Taiwan Normal University, No. 88, Sec. 4, Tingzhou Rd., Wenshan District, Taipei 11677, Taiwan, ROC;

    Utah Climate Center, Utah State University, Logan, UT, USA,Department of Plants, Soils, and Climate, Utah State University, Logan, UT, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Diurnal rainfall; Land-sea breeze; Circulation change; Low-level jet;

    机译：日降水量陆海风;流通变化;低空喷射;

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