收稿日期: 1998-11-23
修回日期: 1999-03-22
网络出版日期: 1999-10-01
基金资助
国家自然科学基金重点项目“20世纪中国与全球气候变率研究”(编号:49635190)及博士后基金资助。
THE INFLUENCE OF ENSO ON GLOBAL TEMPERATURE DURING THE LAST 100 YEARS
Received date: 1998-11-23
Revised date: 1999-03-22
Online published: 1999-10-01
龚道溢,王绍武 . 近百年全球温度变化中的ENSO分量[J]. 地球科学进展, 1999 , 14(5) : 518 -523 . DOI: 10.11867/j.issn.1001-8166.1999.05.0518
To explore the coupling between the atmosphere and the ocean in ENSO events, the combination of 2 SST indices and 2 SOIs back to the 1867 are used to define the ENSO index. The 2 SSTs are SST of Nin~o C(i.e. 180°～90°W,0°～5°S, Angell,1981) and SST of Nin~o 3(i.e. 160°E～90°W,5°N～5°S,Caneet al,1997), 2 SOIs are SOI of Ropelewski and Jones and SOI of Shi and Wang respectively.Then 32“warm phase”ENSO events and 32“cold phase”ENSO events are identified from the spring of
1867 to the spring of 1998. Then global temperature anomalies associated with ENSO are investigated by using long-period global gridded temperature records from 1880 to 1997. The influence of ENSO on both tropical and extra-tropical temperature are significant in annual time scale. The temperature lags ENSO by one season in tropic, and by two～three seasons in extra-tropics. ENSO can account for about 20.6% global interannual temperature variance. But ENSO can not explain the warming trend and the interdecadal variability of global temperature over the past century.
Key words： Global temperature change; Climate system; ENSO; Tropical area.
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