doi:

DOI: 10.3724/SP.J.1085.2013.00315

Advances in Polar Science 2013/24:4 PP.315-325

Study of the climatic teleconnection between the Siberian high and maritime continent warm pool


Abstract:
This paper attempts to establish a method for analysing the relationship between the polar and equatorial climate of the Northern Hemisphere.The Arctic Oscillation(AO)is known to have no direct relationship with the monsoon over the Maritime Continent(MC).Thus,an index called the Siberian High(SH)-Maritime Continent(MC)Index(SHMCI)is developed to represent the mean sea level pressure difference between the SH and the warm pool over the MC.This index indicates a strong link with the monsoon circulation.A positive(strong)value of the SHMCI is associated with strong meridional winds and intense and frequent cold surge events over the South China Sea.The correlation between the AO index and the SHMCI is-0.39,which is medium but statistically significant;however,it is not sufficiently conclusive to infer direct correlation.Nevertheless,the SHMCI can be used as a tool to relate the AO with the monsoon over the MC because of the influence demonstrated by the AO towards the SH.Further analysis on the convergence and divergence anomalies over the MC reveals an impact discernible only from the SHMCI.This implies that the SHMCI manifests clearly the relationship between the Arctic and equatorial climate.

Key words:polar to equatorial climatic teleconnection,Arctic Oscillation,Asian Winter Monsoon,Siberian High-Maritime Continent index,convergence and divergence

ReleaseDate:2015-04-16 13:27:18



1 Lin H, Derome J, Greatbatch R J, et al. Tropical links of the Arctic Oscillation. Geophys Res Lett, 2002, 29(20): 41-44.

2 L'Heureux M L, Higgins R W. Boreal winter links between the Mad-den-Julian Oscillation and the Arctic Oscillation. J Climate, 2008, 21(12): 3040-3050.

3 Thompson D W J, Wallace J M. The Arctic oscillation signature in the wintertime geopotential height and temperature fields. Geophys Res Lett, 1998, 25(9): 1297-1300.

4 National Snow and Ice Data Center (NSIDC). http://nsidc.org/arc-ticmet/patterns/arctic_oscillation.html, 2010.

5 Wu B Y, Wang J. Possible impacts of winter Arctic Oscillation on Siberian high, the East Asian winter monsoon and sea-ice extent. Adv Atmos Sci,2002, 19(2): 297-320.

6 Park T W, Ho C H, Yang S. Relationship between the Arctic Oscillation and Cold Surges over East Asia. J Climate, 2011, 24(1): 68-83.

7 Gong D Y, Wang S W, Zhu J H. East Asian Winter Monsoon and Arctic Oscillation. Geophys Res Lett, 2001, 28(10): 2073-2076.

8 Gong D Y, Wang S W, Zhu J H. Arctic Oscillation influence on daily temperature variance in winter over China. Chinese Sci Bull, 2004, 49(6): 637-642.

9 Chan C L, Li C Y. The East Asian Monsoon//Chang C P. East Asian Monsoon. Singapore: World Scientific, 2001: 54-102.

10 Lim T J, Samah A A. Weather and Climate of Malaysia. UM Press, 2004:22.11 Boyle J S, Chen T J. Synoptic aspects of the wintertime East Asian Mon-soon//Chang C P, Krishnamurti T N. Monsoon meteorology. New York: Oxford University Press, 1987: 125-160.

12 Takaya K, Nakamura H. Mechanisms of Intraseasonal Amplification of the Cold Siberian High. J Atmos Sci, 2005, 62(12): 4423-4440.

13 Chang C P, Harr P A, Chen H J. Synoptic disturbances over the equatorial South China Sea and western Maritime Continent during boreal winter. Mon Weather Rev, 2005, 133(3): 489-503.

14 Wu B Y, Wang J. Winter Arctic oscillation, Siberian High and East Asian Winter Monsoon. Geophys Res Lett, 2002, 29(19): 31-34.

15 Lau K M, Boyles J S. Tropical and extratropical forcing of the large-scale circulation: a diagnostic study. Mon Weather Rev, 1987, 115(2): 400-428.

16 NCEP/NCAR reanalysis. Mon Weather Rev, 1997, 125(10): 2605-2619.

16 Zhang Y, Sperber K R, Boyle J S. Climatology and interannual variation of the East Asian winter monsoon: Results from the 1979-1995.

17 Climate Prediction Center of NOAA (CPC) Arctic Oscillation. http:// www. cpc.ncep.noaa. gov/products/precip/CWlink/daily_ao_index/monthly .ao.index.b50.current.ascii.table. 2010.

18 Chang C P, Wang Z, Hendon H. The Asian winter monsoon//Wang B. The Asian monsoon. Berlin: Springer, 2006: 89-127.