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Synoptic-scale controls of persistent low temperature and icy weather over southern China in January 2008

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Zhou, W., Chan, J. C. L., Chen, W., Ling, J., Pinto, J. G. and Shao, Y. (2009) Synoptic-scale controls of persistent low temperature and icy weather over southern China in January 2008. Monthly Weather Review, 137 (11). pp. 3978-3991. ISSN 0027-0644

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To link to this article DOI: 10.1175/2009MWR2952.1

Abstract/Summary

In January 2008, central and southern China experienced persistent low temperatures, freezing rain, and snow. The large-scale conditions associated with the occurrence and development of these snowstorms are examined in order to identify the key synoptic controls leading to this event. Three main factors are identified: 1) the persistent blocking high over Siberia, which remained quasi-stationary around 65°E for 3 weeks, led to advection of dry and cold Siberian air down to central and southern China; 2) a strong persistent southwesterly flow associated with the western Pacific subtropical high led to enhanced moisture advection from the Bay of Bengal into central and southern China; and 3) the deep inversion layer in the lower troposphere associated with the extended snow cover over most of central and southern China. The combination of these three factors is likely responsible for the unusual severity of the event, and hence a long return period

Item Type:Article
Refereed:Yes
Divisions:No Reading authors. Back catalogue items
Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
ID Code:32777
Uncontrolled Keywords:Synoptic-scale processes, Asia, Freezing precipitation, Snow, Extreme events
Publisher:American Meteorological Society

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