Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific
The effects of vertical wind shear (VWS) with different directions on tropical cyclone (TC) intensity change are compared in this statistical study based on TCs occurring between 1982 and 2015 over the western North Pacific (WNP). Results show that a westerly VWS has a much higher correlation (−0.36...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/aaa496 |
| _version_ | 1827870971123466240 |
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| author | Wei Na Zhang Xinghai Chen Lianshou Hu Hao |
| author_facet | Wei Na Zhang Xinghai Chen Lianshou Hu Hao |
| author_sort | Wei Na |
| collection | DOAJ |
| description | The effects of vertical wind shear (VWS) with different directions on tropical cyclone (TC) intensity change are compared in this statistical study based on TCs occurring between 1982 and 2015 over the western North Pacific (WNP). Results show that a westerly VWS has a much higher correlation (−0.36) with change in TC intensity than an easterly VWS (−0.07) over the WNP, especially south-westerly VWS (−0.43). Sea surface temperature (SST) is found to modulate the effect of VWS on TC intensity change as it has a close relationship with zonal VWS (−0.48). The favorable effect of SST, which increases with increase in easterly VWS, could offset the detrimental effect of VWS, leading to a relatively low correlation coefficient between easterly VWS and TC intensity change. By contrast, westerly VWS increases with decreasing SST, and the largest correlation coefficient appears when SST is around 301 K. Therefore, it is suggested that the direction of VWS as well as its value is taken into consideration in models used to predict TC intensity. |
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| format | Article |
| id | doaj.art-2b01dec5b9df498d8b62c98c38ac0d7b |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T16:03:22Z |
| publishDate | 2018-01-01 |
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| series | Environmental Research Letters |
| spelling | doaj.art-2b01dec5b9df498d8b62c98c38ac0d7b2023-08-09T14:30:04ZengIOP PublishingEnvironmental Research Letters1748-93262018-01-0113303402010.1088/1748-9326/aaa496Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North PacificWei Na0https://orcid.org/0000-0002-5541-6068Zhang Xinghai1Chen Lianshou2Hu Hao3State Key Laboratory of Severe Weather , Chinese Academy of Meteorological Sciences, Beijing, 100081 People’s Republic of China; Author to whom any correspondence should be addressed.State Key Laboratory of Severe Weather , Chinese Academy of Meteorological Sciences, Beijing, 100081 People’s Republic of China; China Electronics Technology Group Corporation , Glarun Group Co., Ltd, Nanjing, People’s Republic of ChinaState Key Laboratory of Severe Weather , Chinese Academy of Meteorological Sciences, Beijing, 100081 People’s Republic of ChinaState Key Laboratory of Severe Weather , Chinese Academy of Meteorological Sciences, Beijing, 100081 People’s Republic of ChinaThe effects of vertical wind shear (VWS) with different directions on tropical cyclone (TC) intensity change are compared in this statistical study based on TCs occurring between 1982 and 2015 over the western North Pacific (WNP). Results show that a westerly VWS has a much higher correlation (−0.36) with change in TC intensity than an easterly VWS (−0.07) over the WNP, especially south-westerly VWS (−0.43). Sea surface temperature (SST) is found to modulate the effect of VWS on TC intensity change as it has a close relationship with zonal VWS (−0.48). The favorable effect of SST, which increases with increase in easterly VWS, could offset the detrimental effect of VWS, leading to a relatively low correlation coefficient between easterly VWS and TC intensity change. By contrast, westerly VWS increases with decreasing SST, and the largest correlation coefficient appears when SST is around 301 K. Therefore, it is suggested that the direction of VWS as well as its value is taken into consideration in models used to predict TC intensity.https://doi.org/10.1088/1748-9326/aaa496tropical cyclonevertical wind shearintensity change |
| spellingShingle | Wei Na Zhang Xinghai Chen Lianshou Hu Hao Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific Environmental Research Letters tropical cyclone vertical wind shear intensity change |
| title | Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific |
| title_full | Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific |
| title_fullStr | Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific |
| title_full_unstemmed | Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific |
| title_short | Comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western North Pacific |
| title_sort | comparison of the effect of easterly and westerly vertical wind shear on tropical cyclone intensity change over the western north pacific |
| topic | tropical cyclone vertical wind shear intensity change |
| url | https://doi.org/10.1088/1748-9326/aaa496 |
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