AN EAST ASIAN SUBTROPICAL SUMMER MONSOON INDEX DEFINED BY MOISTURE TRANSPORT
  • 【摘要】

    Using daily NCEP/NCAR reanalysis dataset and observation rainfall data in China for the 1971- 2000 period, a subtropical summer monsoon index has been defined by meridional moisture transport of the t... 展开>>Using daily NCEP/NCAR reanalysis dataset and observation rainfall data in China for the 1971- 2000 period, a subtropical summer monsoon index has been defined by meridional moisture transport of the total atmosphere column. Results show that the subtropical summer monsoon index defined by the difference of meridional moisture transport between South China and North China can be used to describe the intensity of the subtropical summer monsoon. High (low) index is corresponding to strong (weak) subtropical summer monsoon. And the new index is well related to the summer rainfall over the middle and lower reaches of Yangtze River. In addition, the convergence of moisture transport from the west Pacific via the South China Sea and that from the North China may be responsible for the anomalously excessive summer rainfall over the middle and lower reaches of Yangtze River. 收起<<

  • 【作者】

  • 【作者单位】

    Shanghai Climate Center/Shanghai Meteorological Bureau/Nanjing University of Information Science & Technology/Chinese Academy of Meteorological Sciences

  • 【刊期】

    热带气象学报(英文版) 2008年1期

  • 【关键词】

    moisture transport  index  subtropical monsoon  middle and lower reaches of Yangtze River  precipitation 

  • 【基金项目】

    上海市气象局资助项目