This paper analyzes interannual variations of the blocking high over the Ural Mountains in the boreal winter and their association with the Arctic Oscillation/North Atlantic Oscillation(AO/NAO).In January,the relationship between the Ural blocking high(UR) and the AO index is statistically significant.The UR tends to occur more frequently and with greater strength during negative AO periods.Some strong URs also occur during positive AO phases(positive UR-AO events),as in January 2008.This paper discusses th...
【英文摘要】
This paper analyzes interannual variations of the blocking high over the Ural Mountains in the boreal winter and their association with the Arctic Oscillation/North Atlantic Oscillation(AO/NAO).In January,the relationship between the Ural blocking high(UR) and the AO index is statistically significant.The UR tends to occur more frequently and with greater strength during negative AO periods.Some strong URs also occur during positive AO phases(positive UR-AO events),as in January 2008.This paper discusses th...
【基金】
Supported by the China Meteorological Administration Special Public Welfare Research Fund (GYHY201106015);
National Science and Technology Support Program of China (2009BAC51B02);
National Basic Research and Development (973) Program of China (2009CB421401);
National Natural Science Foundation of China (40975022)
【更新日期】
2012-06-28
【分类号】
P467
【正文快照】
1. IntroductionCertain large-scale flow patterns typically persistbeyond the periods associated with synoptic-scale vari-ability in the extratropics (Dole, 1986). Two of themost frequently described and discussed phenomenaare blocking (e.g., Rex, 1950; Su
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