| WU Liang,WEN Zhiping,HUANG Ronghui. 2011. A primary study of the correlation between the net air-sea heat flux and the interannual variation of western North Pacific tropical cyclone track and intensity. Acta Oceanologica Sinica, (6):27－35 |
| A primary study of the correlation between the net air-sea heat flux and the interannual variation of western North Pacific tropical cyclone track and intensity |
| A primary study of the correlation between the net air-sea heat flux and the interannual variation of western North Pacific tropical cyclone track and intensity |
| Received:June 02, 2009 Revised:May 14, 2010 |
| DOI：10.1007/s13131-011-0158-8 |
| Key words:tropical cyclone western North Pacific the net air-sea heat flux (Qnet) interannual variation |
| 中文关键词: tropical cyclone western North Pacific the net air-sea heat flux (Qnet) interannual variation |
| 基金项目:The National Key Basic Research Program of China under Grant No. 2009CB421404; the National Natural Science Foundation of China-Regional Cooperation Project under Grant No. 40921160379; the National Natural Science foundation of China under Grant No. 40730951; the Fundamental Research Funds for the Central Universities under Grant No. 11lgjc10. |
| Author Name | Affiliation | E-mail | | WU Liang | Center for Monsoon and Environment Research/Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China
Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China | | | WEN Zhiping | Center for Monsoon and Environment Research/Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China | eeswzp@mail.sysu.edu.cn | | HUANG Ronghui | Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China | |
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| Abstract: |
| A singular value decomposition (SVD) analysis is carried out to reveal the relationship between the interannual variation of track and intensity of the western North Pacific tropical cyclones (WNPTCs) in the tropical cyclone (TC) active season (July-November) and the global net airsea heat flux (Qnet) in the preceding season (April-June). For this purpose, a tropical cyclone track and intensity function (TIF) is defined by a combination of accumulated cyclone energy (ACE) index and a cyclone track density function. The SVD analysis reveals that the first mode is responsible for the positive correlation between the upward heat flux in the tropical central Pacific and the increased activity of western North Pacific (WNP) TIF, the second mode for the positive correlation between the upward heat flux in the North Indian Ocean and the northeastward track shift of WNPTCs and the third mode for the negative correlation between the upward heat flux in mid-latitude central Pacific and the northwest displacement of the WNP TC-active center. This suggests that Qnet anomalies in some key regions have a substantial remote impact on the WNP TC activity. |
| 中文摘要: |
| A singular value decomposition (SVD) analysis is carried out to reveal the relationship between the interannual variation of track and intensity of the western North Pacific tropical cyclones (WNPTCs) in the tropical cyclone (TC) active season (July-November) and the global net airsea heat flux (Qnet) in the preceding season (April-June). For this purpose, a tropical cyclone track and intensity function (TIF) is defined by a combination of accumulated cyclone energy (ACE) index and a cyclone track density function. The SVD analysis reveals that the first mode is responsible for the positive correlation between the upward heat flux in the tropical central Pacific and the increased activity of western North Pacific (WNP) TIF, the second mode for the positive correlation between the upward heat flux in the North Indian Ocean and the northeastward track shift of WNPTCs and the third mode for the negative correlation between the upward heat flux in mid-latitude central Pacific and the northwest displacement of the WNP TC-active center. This suggests that Qnet anomalies in some key regions have a substantial remote impact on the WNP TC activity. |
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