Advances in Earth Science ›› 1999, Vol. 14 ›› Issue (5): 518-523. doi: 10.11867/j.issn.1001-8166.1999.05.0518

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THE INFLUENCE OF ENSO ON GLOBAL TEMPERATURE DURING THE LAST 100 YEARS

GONG Daoyi, WAND Shaowu   

  1. Department of Geophysics,Peking University,Beijing100871,China
  • Received:1998-11-23 Revised:1999-03-22 Online:1999-10-01 Published:1999-10-01

GONG Daoyi, WAND Shaowu. THE INFLUENCE OF ENSO ON GLOBAL TEMPERATURE DURING THE LAST 100 YEARS[J]. Advances in Earth Science, 1999, 14(5): 518-523.

 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.

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