利用“LASG/IAP气候系统海洋模式”(LASG/IAP Climate system Ocean Model,简称LICOM海洋模式)和全球简单海洋资料同化分析系统产成的SODA(simple ocean model assimilation)资料研究了2010年拉尼娜事件发生的动力机制。结果表明,2010年拉尼娜事件发生于2010年6月,是继2009年厄尔尼诺事件之后发生的一次较为特殊的一次冷事件,该事件将持续到2011年;该事件主要是由2010年西边界反射的东传上升Kelvin波和西太平洋异常东风激发的,而赤道太平洋纬向流异常在该事件的形成过程中也起着非常重要的作用。通过对本次拉尼娜事件动力机制和发生发展过程的研究分析,进一步加深了对拉尼娜事件动力机制的了解,同时对拉尼娜事件的预报及防灾减灾有重要意义。
Ocean Model LICOM(LASG/IAP Climate system Ocean Model) and SODA (simple ocean data assimi- lation) data are used to analyse the dynamic of La Nifia events in 2010. The results show that, La Nifia events in 2010 following the 2009 E1 Nifio events as a more special cold event, occurred in June 2010, and it'll continue into 2011. The event is mainly excited by the western boundary reflection Kelvin wave and the eastward wind anomalies increase in the westem Pacific wind anomalies, and zonal flow anomalies in the equatorial Pacific during the formation of the event also plays a very important role