%0 Journal Article
%T Activities of low-frequency waves in the tropical atmosphere and enso<br>
%A Li Guilong
%A Li Chongyin
%A <br>
%J 大气科学进展
%D 1998
%I 
%X ENSO, particularly the occurrence of ENSO is still an important research object in climatic variation. Using the ECMWF data, the relationship between ENSO and the activities of low-frequency waves in the tropical atmosphere is analyzed in this paper. It is shown that the occurrence of ENSO is closely related to the intraseasonal oscillation and the quasi-stationary waves (the period > 90 days) in the tropical atmosphere. Associated with the occurrence of El Nino event, the kinetic energy of low-frequency waves has obvious varia?tion: the kinetic energy of atmospheric intraseasonal (30-60 days) oscillation (ISO) decreases abruptly and the kinetic energy of quasi stationary waves increases abruptly. Moreover, the ISO and quasi-stationary waves propagate eastward clearly corresponding to El Nino; but they clearly propagate westward in La Nina cases.
%K Intrascasonal oscillation
%K El Nine / Southern Oscillation
%K Quasi-stationary wave<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=5434AFBF6CB6E7E8D67733B541F211C7&aid=B3FAD1EF9FF94763D66C83B5A16FAD73&yid=8CAA3A429E3EA654&vid=23CCDDCD68FFCC2F&iid=0B39A22176CE99FB&sid=23104246A5FCFCEF&eid=38685BC770C663F2&journal_id=0256-1530&journal_name=大气科学进展&referenced_num=1&reference_num=8