Interdecadal change in the South Asian summer monsoon rainfall in 2000 and contributions from regional tropical SST

Interdecadal change in the South Asian summer monsoon rainfall in 2000 and contributions from regional tropical SST

论文摘要

本研究揭示,南亚夏季风降水在2000年左右发生了显著的年代际变化,主要表现为:印巴边境南部至阿拉伯海、孟加拉湾西部降水增加,而南部季风区和印度半岛西海岸降水减少。利用CAM4开展的海温敏感性试验显示,全球海温变化引起的季风环流变化与观测基本一致。热带太平洋和印度洋海温信号分别主导了Walker环流和局地Hadley环流变化,而热带大西洋海温则进一步增强了季风区南部的下沉运动异常。

论文目录

  • 1. Introduction
  • 2. Datasets and model experiments
  • 3. Results
  •   3.1. Spatiotemporal features of the SASM rainfall
  •   3.2. Interdecadal change in the regional atmospheric circulation after 2000
  •   3.3. Contributions of the global SST anomalies
  • 4. Summary
  • Disclosure statement
  • 文章来源

    类型: 期刊论文

    作者: MA Haoyue,ZHU Yali,HUA Wei

    关键词: 南亚夏季风,大西洋多年代际涛动,太平洋年代际振荡,印度洋海温,夏季降水

    来源: Atmospheric and Oceanic Science Letters 2019年06期

    年度: 2019

    分类: 基础科学

    专业: 气象学

    单位: School of Atmospheric Sciences, Chengdu University of Information Technology,Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology

    基金: supported by the National Key Research and Development Program of China [grant number2017YFC1502304],the National Natural Science Foundation of China [grant numbers 41675083 and 41522503],the Chinese Academy of Sciences–Peking University Joint Research Program

    分类号: P426.614

    页码: 399-408

    总页数: 10

    文件大小: 4823K

    下载量: 16

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    Interdecadal change in the South Asian summer monsoon rainfall in 2000 and contributions from regional tropical SST
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