Abstracts for the 5th International GAME Conf.

3-5 October 2001

Aichi Trade Center

Nagoya Japan

An East Asian Summer Monsoon Index Describing Meiyu Phenomenon

Zhang Yan (1), Wang Yafei (2), YiQingju (2)

This study defined a new index to measure East Asian monsoon based on the result of analysis of special climatic characteristics around East Asian region. Compared with other indices, the new index is basically satisfied with the optimal principles for monsoon indices proposed by Lau et al. We summarized the results as follows: (1) the index could display the south-north distribution of East Asian monsoon activity (2) the index could better describe Meiyu / Baiu phenomenon especially the Meiyu rain belt around Yangtze river (3) In high index years, an anomalous blocking anticyclone tends to occur in the northeast Asia, meanwhile subtropical high of the western North Pacific extends abnormally westward and vice versa (4) the index is well correlated with the preceding ENSO events. Key words: East Asian monsoon, Meiyu, Monsoon index

Submittal Information

Name : Date :
    Zhang Yan
    21-May-01-16:33:39
Organization : Theme :
    National Climate Center, CMA
    Theme 5
Address : Presentation :
    100081, Beijing
    Poster or oral
Country : Abstract ID :
    China
    T5ZY21May01163339
Phone : Fax :
    +86-010-68408528
    +86-010-68408528
E-mail :
    zytyou@yahoo.com.cn