Dominant sea-surface temperature anomaly patterns in summer over the North Pacific ocean |
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| Authors: | Nanase Motokawa Noriyuki Matsuo Naoto Iwasaka |
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| Institution: | (1) Center for Climatic Research, University of Wisconsin-Madison, 1225 W. Dayton Street, Madison, WI 53706, USA;(2) Water and Carbon Cycles Group, Jet Propulsion Laboratory, MS 183-501, 4800 Oak Grove Drive, Pasadena, CA 91109, USA;(3) Polar Science Center, University of Washington, 1013 NE 40th Street, Seattle, WA 98105, USA;(4) J. J. Howard Marine Laboratory, Rutgers University, 74 Magrudor Road, Highlands, NJ 07732, USA |
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| Abstract: | We investigated the structure and persistency of the dominant sea-surface temperature (SST) anomaly pattern in summer over
the North Pacific from 1960 to 2004, which has been attracting less attention than those in winter. The leading empirical
orthogonal functions (EOFs) for August and September, which can be treated as the summer patterns, rather resemble each other
in both spatial structure and time variations but are quite different from those of the other months. A lag correlation analysis
indicates that the summer patterns do not show significant persistency in the following winter and the summer of the next
year. An inappropriate definition of the summer season might obscure the characteristics of the dominant summer SST anomaly
pattern in the North Pacific. |
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