Winter Arctic Oscillation, Siberian High and East Asian Winter Monsoon

Details Winter Arctic Oscillation, Siberian High and East Asian Winter Monsoon Winter Arctic Oscillation, Siberian High and East Asian Winter Monsoon

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29s...3w&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 19, pp. 3-1, CiteID 1897, DOI 10.1029/2002GL015373

Physics

Geophysics

39

History Of Geophysics: Atmospheric Sciences, Global Change: Atmosphere (0315, 0325), Global Change: Climate Dynamics (3309)

Scientific paper

In this note, we investigate the impacts of the winter Arctic Oscillation (AO) and Siberian High (SH) on the East Asia winter monsoon (EAWM). It is found that the winter AO and the SH are relatively independent of each other in influencing the EAWM. The winter AO influences directly surface air temperature (SAT), sea level pressure (SLP) and the East Asian Trough at 500 hPa over the region northwards of 35°N in East Asia rather than through its impact on the SH. Compared with influences of the winter AO, the SH shows more direct and significant influences on the EAWM, particularly on SLP and northerly wind along the East Asian Coast. Impacts of the SH on the SAT occur primarily in the southwards of 50°N over East Asia, the northwestern Pacific and the South China Sea, because the AO suppresses the SH's influences in high latitudes of Asian Continent and the some subarctic regions.

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