Life Cycles of Blocking Flows Associated with Synoptic-Scale Eddies: Observed Results and Numerical Experiments  

天气尺度波激发的阻塞流的生命循环:观测结果和数值试验(英文)

作　　者：罗德海 李建平 黄菲 

机构地区：[1]Department of Atmospheric and Oceanic Sciences, Oceanic University of Qingdao,LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 [2]LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 [3]Department of Atmospheric and Oceanic Sciences, Ocean University of Qingdao, Qingdao, 266003

出　　处：《Advances in Atmospheric Sciences》2002年第4期594-618,共25页大气科学进展（英文版）

基　　金：Acknowledgments. This research was supported by the TRAPOYT and by the National Natural Science Foun-dation of China under Grant No. 40023001.

摘　　要：An observational study is presented to confirm that the life cycle of blocking associated with synoptic—scale eddies is a transfer process between dispersion and nondispersion. In addition, numerical experiments are conducted. It is found that the synoptic—scale eddies seem to play a dominant role in the amplification of blocking, while the topography effect appears to play a phase-locking role. At the same time, the synoptic eddies tend to split into two branches during the onset of blocking. This supports the observational results obtained.An observational study is presented to confirm that the life cycle of blocking associated with synoptic—scale eddies is a transfer process between dispersion and nondispersion. In addition, numerical experiments are conducted. It is found that the synoptic—scale eddies seem to play a dominant role in the amplification of blocking, while the topography effect appears to play a phase-locking role. At the same time, the synoptic eddies tend to split into two branches during the onset of blocking. This supports the observational results obtained.

关 键 词：BLOCKING life cycle synoptic—scale eddy 

分 类 号：P412[天文地球—大气科学及气象学]