Interannual variation of East Asian summer monsoon and its impacts on general circulation and precipitation

Auteur(s) et Affiliation(s)

YU, S.

State Key Lab. of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, Chine

SHI, X.

State Key Lab. of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, Chine

LIN, X.

National Climate Center, Beijing, Chine

Description :
Over the East Asia-West Pacific region, some meteorological factors are studied by using statistical diagnostic methods such as empirical orthogonal function (EOF) analysis, composite analysis and other statistical diagnosis. The results show an obvious opposite correlation exists between zonal dipole oscillation mode (APD) index and East Asian Pattern (EAP) index with a correlation coefficient of -0.23. Both APD and EAP indexes are closely correlated with precipitation during flood-prone season in China and precipitation rate over the East Asia-West Pacific region. The significant correlation area at 5% confidence level is mainly located from the southern area of the Yangtze River valley to the ocean around southern Japan, and the former is a positive correlation and the latter is a negative one.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2009, vol. 19, n°. 1, p. 67-80, nombre de pages : 14, Références bibliographiques : 18 ref.

Date :
2009

Editeur :
Pays édition : Chine

Langue :
Anglais