%0 Journal Article
%T Identification of Persistent Modes of Anomalies and Their Impact on Predictability in the Barotropic Atmosphere with Orographic Forcing<br>地形强迫正压大气异常持续类型的确定及其对可预报性的影响
%A Wang Guomin
%A Wang Zhaomin
%A <br>王国民
%A 王召民
%J 大气科学
%D 1996
%I 
%X A data set generated by integrating a nonlinear barotropic vorticity equation model with an orographic forcing is used to study the characteristic time scale of EOF temporal coefficients in streamfunction anomalies.Then a most persistent mode(MPM) is determined and its influence on predictability is investigated. It is found that there is a close correlation between the MPM.and the evolution of circulation anomalies, and the structure of initial fields has obvious impact on predictability.Finally the potential application of atmospheric MPM to the extended-and medium-range weather forecasts is discussed.
%K persistent anomalies predictability barotropic atmosphere<br>持续异常
%K 可预报性
%K 正压大气
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=46874A5A102033D774D00D819E91CD68&aid=93666AEDCCCDADA6775B08A58EDEAB03&yid=8A15F8B0AA0E5323&vid=A04140E723CB732E&iid=0B39A22176CE99FB&sid=334E2BB8B9A55ABB&eid=1B64850025D0BBBE&journal_id=1006-9895&journal_name=大气科学&referenced_num=0&reference_num=1