The relationship between tropical cyclone in the northwest Pacific and upper ocean heat content

CAI Xiaojie; JIANG Hua; WANG Hui; ZUO Juncheng

doi:10.3969/j.issn.0253-4193.2013.03.004

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CAI Xiaojie, JIANG Hua, WANG Hui, ZUO Juncheng. The relationship between tropical cyclone in the northwest Pacific and upper ocean heat content[J]. Haiyang Xuebao, 2013, 35(3): 28-35. doi: 10.3969/j.issn.0253-4193.2013.03.004

Citation:

CAI Xiaojie, JIANG Hua, WANG Hui, ZUO Juncheng. The relationship between tropical cyclone in the northwest Pacific and upper ocean heat content[J]. Haiyang Xuebao, 2013, 35(3): 28-35. doi: 10.3969/j.issn.0253-4193.2013.03.004

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The relationship between tropical cyclone in the northwest Pacific and upper ocean heat content

doi: 10.3969/j.issn.0253-4193.2013.03.004

1.
Institute of Physical Oceanography, Hohai University, Nanjing 210098, China;National Marine Environmental Forecasting Center, Beijing 100081, China
2.
National Marine Environmental Forecasting Center, Beijing 100081, China
3.
Institute of Physical Oceanography, Hohai University, Nanjing 210098, China

Received Date: 2012-08-31
Rev Recd Date: 2013-01-11

Abstract

Abstract

Based on SODA datasets and the tropical cyclone data from Unisys Weather, the heat content distribution characteristics of upper ocean 150 m and its relationship between tropical cyclone frequency in the northwest Pacific from 1960 to 2008 are studied. After considering the changes of heat content with latitudes, the maximum heat content in the North Pacific is located at 10°N, which is consistent with the upper ocean temperature structures and more reasonable in physics.The relationships of the heat content in the North Pacific and tropical cyclone frequency in the northwest Pacific show pre-winter positive correlation in the middle and high latitudes of the interior North Pacific and equatorial eastern Pacific where tropical instability waves occurred. And the correlation coefficient show significant interdecadal variations which indicate stronger correlation from 1970 to 1976 and 1984 to 2008 and weaker from 1975 to 1983. In the middle and high latitudes of the interior North Pacific, the same summer and autumn also have strong positive correlation. In the western Pacific warm pool, the negative correlation in the same autumn is most significant. The equatorial middle Pacific shows a significant positive correlation in the summer and autumn. In the equatorial eastern Pacific, the pre-winter negative correlation is most significant, negative correlation weakened in the same spring, and no significant correlation in summer and autumn.
- the North Pacific,
- ocean heat content,
- tropical cyclone frequency

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References(22)

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