Journal of Tropical Oceanography >
Analysis of spatiotemporal variability of global sea surface temperature anomalies during 1900~2009
Received date: 2014-11-17
Online published: 2015-08-21
Based on the NOAA (National Oceanic and Atmospheric Administration, NOAA) monthly global Extended Reconstruction sea surface temperature (ERSST V3) data and using the Rotated Empirical Orthogonal Function (REOF) method, the spatiotemporal variability of the dominant modes of the global sea surface temperature anomalies (SSTA) from 1900 to 2009 is studied. The results show that the first mode of global SSTA with significant interannual variability represents the variability of El Niño and Southern Oscillation (ENSO) and the relationship between ENSO and the global SSTA. The second and fifth modes show pronounced interdecadal variability in the North Pacific. The second mode may have a close spatial relationship with both the Pacific Decadal Oscillation (PDO) and the Pacific Interdecadal Pathway (PIP), while the fifth mode may have a close temporal relationship with the PDO. The third and sixth modes represent multidecadal fluctuations in the North Atlantic; the former may have a close relationship with the Atlantic Multidecadal Oscillation (AMO) that is connected to the tripolar SSTA pattern of the North Atlantic, and the latter is associated with the uniform SSTA pattern of the North Atlantic. The fourth mode represents interdecadal variability with a large response in the South Pacific, poleward of 30°S, and this mode seems to have no relationship with the PDO.
LI Gang , LI Chong-yin , JIANG Xiao-hua , ZHANG Ying , LIU Kai , TAN Yan-ke , BAI Tao . Analysis of spatiotemporal variability of global sea surface temperature anomalies during 1900~2009[J]. Journal of Tropical Oceanography, 2015 , 34(4) : 12 -22 . DOI: 10.11978/j.issn.1009-5470.2015.04.002
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