On the association between spring Arctic sea ice concentration and Chinese summer rainfall

Publication Type  Journal Article
Year of Publication  2009
Authors  Wu, B. Y.; Zhang, R. H.; Wang, B.; D'Arrigo, R.
Journal Title  Geophysical Research Letters
Volume  36
Pages  -
Journal Date  May 5
ISBN Number  0094-8276
Accession Number  ISI:000265928300001
Key Words  tree-rings; north-atlantic sst; atmospheric circulation; winter circulation; variability; anomalies; monsoon; ccm3
Abstract  

A statistical relationship between spring Arctic sea ice concentration (SIC) and Chinese summer rainfall is identified using singular value decomposition (SVD). Results show that decreased (increased) spring SIC in the Arctic Ocean and the Greenland Sea corresponds to increased (decreased) summer rainfall in northeast China and central China between the Yangtze River and the Yellow River (28 degrees-36 degrees N); and decreased (increased) rainfall in south China. Corresponding summer 500 hPa height anomalies show a Eurasian wave train structure, which originates in northern Europe and extends southeastwards to northeast China, and a south-north dipole structure over East Asia south to Lake Baikal. Such a spatial distribution of 500 hPa height anomalies and corresponding summer rainfall anomalies cannot be entirely attributed to the impact of East Asian summer monsoon (EASM) variability. The spring Arctic SIC provides a complementary precursor for Chinese summer rainfall variability. The combined impacts of both spring Arctic SIC and Eurasian snow cover on the Eurasian wave train may explain their statistical linkage. Citation: Wu, B., R. Zhang, B. Wang, and R. D'Arrigo (2009), On the association between spring Arctic sea ice concentration and Chinese summer rainfall, Geophys. Res. Lett., 36, L09501, doi: 10.1029/2009GL037299.

Notes  

443RQTimes Cited:1Cited References Count:21

URL  <Go to ISI>://000265928300001
DOI  Doi 10.1029/2009gl037299