Events of decadal thermocline variations in the South Pacific Ocean

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Events of decadal thermocline variations in the South Pacific Ocean

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The SODA data generated from a numerical model with data assimilation are used to study the decadal thermal anomalies in the therrnocline of the South Pacific. Three notable events of decadal thermocline variations are found. First, two major warm subduction events originated from outcrop regions centered at 30°S,150°W in the South Pacific Ocean occurred between 1960s and 1980s propagating toward the western Tropics and at 30°S, 90°W in the late 1970s propagating directly toward the eastern Tropics. Second, a special westward warm event originating from the eastern boundary around 15°S occurred in the early 1980s. Thirdly, a distinct zonal location transition of the positive temperature anomalies near 10°S took place in the late 1970s. The results suggest that the warm events in the subtropical South Pacific region are important to the decadal variability of the western tropical Pacific before the late 1970s and to the eastern tropical Pacific after the late 1970s.

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《中国海洋湖沼学报（英文版）》 |2006年第2期|111-117|共7页
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Institute of Climate System, Chinese Academy of Meteorological Sciences, Beijing, 100081, China;

Institute of Physical Oceanography, Ocean University of China, Qingdao 266003, China;

Institute of Physical Oceanography, Ocean University of China, Qingdao 266003, China;

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正文语种 chi
中图分类海洋学;
关键词
decadal variability; the South Pacific Ocean;

机译：年代际变化;南太平洋;

Events of decadal thermocline variations in the South Pacific Ocean

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