Advances in Earth Science ›› 2014, Vol. 29 ›› Issue (7): 844-853. doi: 10.11867/j.issn.1001-8166.2014.07.0844

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A Comparative Analysis of Main Modes of Global-scale Sea Surface Temperature on Multiple Time Scale

Liu Peng 1( ), Jiang Zhihong 1, Yu Huaying 2, Qin Yi 1   

  1. 1.Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Jiangsu, Nanjing, 210044
    2.Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Jiangsu, Nanjing, 210044
  • Online:2014-07-10 Published:2014-07-10

Liu Peng, Jiang Zhihong, Yu Huaying, Qin Yi. A Comparative Analysis of Main Modes of Global-scale Sea Surface Temperature on Multiple Time Scale[J]. Advances in Earth Science, 2014, 29(7): 844-853.

Using the HadISST data from 1880 to 2009, removed the signal of global warming in one hundred year. The results show that, there were the significant interannual and interdecadal oscillation signal at the eastern Pacific and north Pacific and north Atlantic, especially the decadal oscillation in the south of eastern equatorial Pacific cannot be ignored. We found there are three major global-scale signals by using the Empirical Orthogonal Function (EOF) analysis on global sea surface temperature, the first mode is (ENSO-like/PDO-like) Pacific pattern, the second mode is (AMO-like) the north Atlantic pattern and the third mode is (ENSO Modoki-like/CP ENSO-like) Center Pacific Ocean pattern. In particular, the third mode is the performance of Center Pacific El Niño-Southern Oscillation in the global mode. There are significant signals in interannual and interdecadal scales, in the unfiltered conditions, the three modes can explain 34% of total variance contribution. Above the interdecadal scale, the sum of three modes variance contribution is 61%. In various time scales, the three signals and the average global temperature has a connection, especially the influence of the first and second mode is the most important, in the decadal scale, the sum of the first and second modal variance contribution is 50%. Since 2005, there is no significant signal of global warming may be associated with the simultaneous decline of the first two modes.

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