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YU Yang, DONG Changming, SHAN Haixia, ZOU Bin. Statistical analysis of intensity variations in tropical cyclones in the East China Sea passing over the Kuroshio[J]. Journal of Oceanology and Limnology, 2020, 38(6): 1632-1639 |
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Statistical analysis of intensity variations in tropical cyclones in the East China Sea passing over the Kuroshio |
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| YU Yang1,3, DONG Changming1,3, SHAN Haixia1,3, ZOU Bin2 |
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1 College of Marine Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2 National Satellite Ocean Application Service, Ministry of Natural Resources, Beijing 100080, China;
3 Southern Laboratory of Ocean Science and Engineering, Zhuhai 519000, China |
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| Abstract: |
| Intensity variations of the SE-NW-oriented tropical cyclones (TC) in the East China Sea (ECS) passing over the Kuroshio are studied using multi-year high-resolution sea surface temperature data, the tropical cyclone data, and the global reanalysis dataset. The statistical results show that there are 81 TCs passing over the Kuroshio from the southeast in the East China Sea, over 68 years from 1949 to 2016. In terms of the change of the atmospheric pressure in the center of the TC, there are three categories:31 TCs are intensified, 28 maintain their intensities, and 22 weakened. Significant seasonal differences are presented in the distribution. In the analysis on the intensified TCs, it is found that the TCs in the range where the center translational speed is from 1 m/s to 8 m/s and the distance from the Kuroshio main axis is from 10 km to 75 km are intensified more significantly. The analysis of three specific examples of TCs show that the stronger characteristics of the Kuroshio warm water in the ECS, the greater the intensity increase of such tropical cyclones. |
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| Key words:
intensity of typhoons|Kuroshio|East China Sea
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| Received: 2019-03-13 Revised: 2019-08-06 |
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