Enhanced understanding of poleward migration of tropical cyclone genesis
Abstract The known trends of poleward migration for the tropical cyclone (TC) genesis in both hemispheres are discussed from different perspectives. It is shown that the poleward migration rate of the annually averaged latitude of TC genesis in the Northern Hemisphere is significantly affected by th...
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crioppubl:10.1088/1748-9326/abaf85 2024-06-02T08:11:32+00:00 Enhanced understanding of poleward migration of tropical cyclone genesis Shan, Kaiyue Yu, Xiping National Natural Science Foundation of China 2020 http://dx.doi.org/10.1088/1748-9326/abaf85 https://iopscience.iop.org/article/10.1088/1748-9326/abaf85 https://iopscience.iop.org/article/10.1088/1748-9326/abaf85/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 15, issue 10, page 104062 ISSN 1748-9326 journal-article 2020 crioppubl https://doi.org/10.1088/1748-9326/abaf85 2024-05-07T13:57:38Z Abstract The known trends of poleward migration for the tropical cyclone (TC) genesis in both hemispheres are discussed from different perspectives. It is shown that the poleward migration rate of the annually averaged latitude of TC genesis in the Northern Hemisphere is significantly affected by the regional variations of TC number in recent decades, especially an increase in the North Atlantic Ocean and a decrease in the western North Pacific Ocean. The poleward migration rates of TC genesis in the two hemispheres get closer when the effect of the regional TC number variation is excluded. The poleward migration of TC genesis without the effect of regional TC number variation is found to have a good correlation with the poleward shift of the edges of the tropics in both hemispheres. A decreasing trend of the cyclonic vorticity in the lower-troposphere over the tropical ocean regions is also identified in both hemispheres, which leads to a poleward shift of the equatorward boundary for TC genesis. The poleward migration of TC genesis after the effect of regional TC number variation is excluded and can thus be considered as a result of the tropical expansion. It is shown that the genesis of TCs with a different intensity has a different migration rate. When excluding the effect of the regional TC number variation, the poleward migration of TCs with a different intensity has a similar trend in both hemispheres. The tropical storms and intense typhoons have significant poleward migration trends, while the weak typhoons behave differently. Article in Journal/Newspaper North Atlantic IOP Publishing Pacific Environmental Research Letters 15 10 104062 |
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Abstract The known trends of poleward migration for the tropical cyclone (TC) genesis in both hemispheres are discussed from different perspectives. It is shown that the poleward migration rate of the annually averaged latitude of TC genesis in the Northern Hemisphere is significantly affected by the regional variations of TC number in recent decades, especially an increase in the North Atlantic Ocean and a decrease in the western North Pacific Ocean. The poleward migration rates of TC genesis in the two hemispheres get closer when the effect of the regional TC number variation is excluded. The poleward migration of TC genesis without the effect of regional TC number variation is found to have a good correlation with the poleward shift of the edges of the tropics in both hemispheres. A decreasing trend of the cyclonic vorticity in the lower-troposphere over the tropical ocean regions is also identified in both hemispheres, which leads to a poleward shift of the equatorward boundary for TC genesis. The poleward migration of TC genesis after the effect of regional TC number variation is excluded and can thus be considered as a result of the tropical expansion. It is shown that the genesis of TCs with a different intensity has a different migration rate. When excluding the effect of the regional TC number variation, the poleward migration of TCs with a different intensity has a similar trend in both hemispheres. The tropical storms and intense typhoons have significant poleward migration trends, while the weak typhoons behave differently. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Shan, Kaiyue Yu, Xiping |
spellingShingle |
Shan, Kaiyue Yu, Xiping Enhanced understanding of poleward migration of tropical cyclone genesis |
author_facet |
Shan, Kaiyue Yu, Xiping |
author_sort |
Shan, Kaiyue |
title |
Enhanced understanding of poleward migration of tropical cyclone genesis |
title_short |
Enhanced understanding of poleward migration of tropical cyclone genesis |
title_full |
Enhanced understanding of poleward migration of tropical cyclone genesis |
title_fullStr |
Enhanced understanding of poleward migration of tropical cyclone genesis |
title_full_unstemmed |
Enhanced understanding of poleward migration of tropical cyclone genesis |
title_sort |
enhanced understanding of poleward migration of tropical cyclone genesis |
publisher |
IOP Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1088/1748-9326/abaf85 https://iopscience.iop.org/article/10.1088/1748-9326/abaf85 https://iopscience.iop.org/article/10.1088/1748-9326/abaf85/pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Environmental Research Letters volume 15, issue 10, page 104062 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/abaf85 |
container_title |
Environmental Research Letters |
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15 |
container_issue |
10 |
container_start_page |
104062 |
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1800757720144412672 |