A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific
The relationship between ocean subsurface temperature and tropical cyclone (TC) over the western North Pacific (WNP) is studied based on the TC best-track data and global reanalysis data during the period of 1948–2012. Here the TC frequency (TCF), lifespan, and genesis position of TCs are analysed....
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2020/9290837 |
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| author | Difu Sun Junqiang Song Kaijun Ren Xiaoyong Li Guangjie Wang |
| author_facet | Difu Sun Junqiang Song Kaijun Ren Xiaoyong Li Guangjie Wang |
| author_sort | Difu Sun |
| collection | DOAJ |
| description | The relationship between ocean subsurface temperature and tropical cyclone (TC) over the western North Pacific (WNP) is studied based on the TC best-track data and global reanalysis data during the period of 1948–2012. Here the TC frequency (TCF), lifespan, and genesis position of TCs are analysed. A distinctive negative correlation between subsurface water temperature and TCF is observed, especially the TCF in the southeastern quadrant of the WNP (0–15°N, 150–180°E). According to the detrended subsurface temperature anomalies of the 125 m depth layer in the main TC genesis area (0–30°N, 100–180°E), we selected the subsurface cold and warm years. During the subsurface cold years, TCs tend to have a longer mean lifespan and a more southeastern genesis position than the subsurface warm years in general. To further investigate the causes of this characteristic, the TC genesis potential indexes (GPI) are used to analyse the contributions of environmental factors to TC activities. The results indicate that the negative correlation between subsurface water temperature and TCF is mainly caused by the variation of TCF in the southeastern quadrant of the WNP, where the oceanic and atmospheric environments are related to ocean subsurface conditions. Specifically, compared with the subsurface warm years, there are larger relative vorticity, higher relative humidity, smaller vertical wind shear, weaker net longwave radiation, and higher ocean mixed layer temperature in the southeastern quadrant during cold years, which are all favorable for genesis and development of TC. |
| format | Article |
| id | doaj-art-2ce962cf974c4d6c8a44a421cc92c33e |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-2ce962cf974c4d6c8a44a421cc92c33e2025-02-03T06:46:55ZengWileyAdvances in Meteorology1687-93091687-93172020-01-01202010.1155/2020/92908379290837A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North PacificDifu Sun0Junqiang Song1Kaijun Ren2Xiaoyong Li3Guangjie Wang4College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, ChinaUnit 61741 of People’s Liberation Army, Beijing 100080, ChinaThe relationship between ocean subsurface temperature and tropical cyclone (TC) over the western North Pacific (WNP) is studied based on the TC best-track data and global reanalysis data during the period of 1948–2012. Here the TC frequency (TCF), lifespan, and genesis position of TCs are analysed. A distinctive negative correlation between subsurface water temperature and TCF is observed, especially the TCF in the southeastern quadrant of the WNP (0–15°N, 150–180°E). According to the detrended subsurface temperature anomalies of the 125 m depth layer in the main TC genesis area (0–30°N, 100–180°E), we selected the subsurface cold and warm years. During the subsurface cold years, TCs tend to have a longer mean lifespan and a more southeastern genesis position than the subsurface warm years in general. To further investigate the causes of this characteristic, the TC genesis potential indexes (GPI) are used to analyse the contributions of environmental factors to TC activities. The results indicate that the negative correlation between subsurface water temperature and TCF is mainly caused by the variation of TCF in the southeastern quadrant of the WNP, where the oceanic and atmospheric environments are related to ocean subsurface conditions. Specifically, compared with the subsurface warm years, there are larger relative vorticity, higher relative humidity, smaller vertical wind shear, weaker net longwave radiation, and higher ocean mixed layer temperature in the southeastern quadrant during cold years, which are all favorable for genesis and development of TC.http://dx.doi.org/10.1155/2020/9290837 |
| spellingShingle | Difu Sun Junqiang Song Kaijun Ren Xiaoyong Li Guangjie Wang A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific Advances in Meteorology |
| title | A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific |
| title_full | A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific |
| title_fullStr | A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific |
| title_full_unstemmed | A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific |
| title_short | A Survey on the Relationship between Ocean Subsurface Temperature and Tropical Cyclone over the Western North Pacific |
| title_sort | survey on the relationship between ocean subsurface temperature and tropical cyclone over the western north pacific |
| url | http://dx.doi.org/10.1155/2020/9290837 |
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