%0 Journal Article
%T Quasi-Periodic Signals and Its Features of Long-Term Change for Global Surface Temperatures over the Past Recent 100 Years<br>近百年全球平均地面气温准周期信号及其长期演变特征的分析
%A Yu Yinhu
%A Ding Yuguo
%A Liu Jingmiao
%A <br>余锦华
%A 丁裕国
%A 刘晶淼
%J 大气科学
%D 2001
%I 
%X The quasi-periodicities of inter-annual variations for the inter-monthly surface air tem- perature anomaly series are diagnosed over the global, southern and northern hemispheres over the past more than 100 years (l856~ l997) by using singular spectrum analysis (SSA). The results show that there exist three dominant time scales with period ranges of 5~ 6 years, around 4 years and quasi-bien- nial oscillations in the global and both hemisphere temperature series. The first two period oscillations are the most prominent. The inter-decadal variations and the variability phase of the various quasi-pe- riod oscillations are displayed in amplitude and wavenumbers as well. The above-mentioned features are obviously different in the global and both hemisphere temperature series. Singular cross spectrum analysis (SCSA) shows that there exist various couple oscillations between the inter-annual oscillations of the global air temperature series and the quasi-period signals which other sub-climate systems hint, especially the couple oscillations between the inter-annual oscillations of the global temperature and the quasi-periods signals of the sea surface temperature (SST) or South Oscillation Index (SOI).
%K global average surface temperature
%K quasi-periodic signals
%K singular spectrum analysis
%K couple oscillation<br>全球平均地面气温
%K 准周期信号
%K 奇异谱分析
%K 耦合振荡
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=46874A5A102033D774D00D819E91CD68&aid=5C8A127E36782EBA&yid=14E7EF987E4155E6&vid=C5154311167311FE&iid=B31275AF3241DB2D&sid=70081086C74F4110&eid=583C993D4E08F5CE&journal_id=1006-9895&journal_name=大气科学&referenced_num=6&reference_num=10