摘要
The interaction between anomalous winter monsoon in East Asia and El Nino is further stud- ied in this paper.The new results still more proved a previous conclusion:there are clear interac- tions between El Nino and winter monsoon in East Asia.The continual westerly burst and stronger cumulus convection over the equatorial central-western Pacific caused by stronger winter monsoon in East Asia can respectively excite anomalous oceanic Kelvin wave and stronger atmo- spheric intraseasonal oscillation in the tropics,then excite the El Nino event through air-sea inter- action.In El Nino winter,there are warmer and weaker winter monsoons in East Asia.The El Ni- no will still reduce the intensity of intraseasonal oscillation and leads it to be barotropic structure.
The interaction between anomalous winter monsoon in East Asia and El Nino is further stud- ied in this paper.The new results still more proved a previous conclusion:there are clear interac- tions between El Nino and winter monsoon in East Asia.The continual westerly burst and stronger cumulus convection over the equatorial central-western Pacific caused by stronger winter monsoon in East Asia can respectively excite anomalous oceanic Kelvin wave and stronger atmo- spheric intraseasonal oscillation in the tropics,then excite the El Nino event through air-sea inter- action.In El Nino winter,there are warmer and weaker winter monsoons in East Asia.The El Ni- no will still reduce the intensity of intraseasonal oscillation and leads it to be barotropic structure.
基金
This study is supported by the National Natural Science Foundation of China.
