Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017

Large-scale ocean‒atmosphere circulations (LOACs) have a pronounced effect on the near-surface wind speed (NSWS). In this study, we discussed the contributions of zonal and meridional flows to NSWS changes and identify the possible association between the Northern Hemisphere Annular Mode (NAM) and t...

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Detalhes bibliográficos
Autores: Zha, Jinlin, Shen, Cheng, Wu, Jian, Zhao, Deming, Fan, Wenxuan, Jiang, Hui-Ping, Azorín-Molina, César, Chen, Deliang
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2022
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/303414
Acesso em linha:http://hdl.handle.net/10261/303414
Access Level:Acceso aberto
Palavra-chave:Near-surface wind speed
Temperature gradient
Pressure gradient
Northern Hemisphere Annular Mode
Large-scale ocean–atmosphere circulations
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spelling Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017Zha, JinlinShen, ChengWu, JianZhao, DemingFan, WenxuanJiang, Hui-PingAzorín-Molina, CésarChen, DeliangNear-surface wind speedTemperature gradientPressure gradientNorthern Hemisphere Annular ModeLarge-scale ocean–atmosphere circulationsLarge-scale ocean‒atmosphere circulations (LOACs) have a pronounced effect on the near-surface wind speed (NSWS). In this study, we discussed the contributions of zonal and meridional flows to NSWS changes and identify the possible association between the Northern Hemisphere Annular Mode (NAM) and the NSWS changes over eastern China from 1979 to 2017. Results show that the reduction in NSWS over eastern China was mainly dominated by the weakening of the zonal wind component. NAM has a considerable effect on the NSWS over eastern China. When the NAM exhibits positive phases, the zonal-mean westerly weakens at low-to-mid-latitudes (10°–40°N). Meanwhile, descending flows prevail near 40°N, and ascending flows persist near 65°N in the troposphere. In the lower troposphere, there are northerly anomalies at low-to-mid-latitudes and southerly anomalies at mid-to-high latitudes (40°–70°N). The anomalous meridional flows transport heat from low to high latitudes and weaken the north‒south air temperature gradient. The decreased air temperature gradient over East Asia reduces the pressure gradient near the surface, decreasing NSWS in eastern China. NAM variations could dominate (32.0 ± 15.8)% of the changes in the annual mean NSWS. Nevertheless, the contribution of NAM to the interannual changes of the zonal component in NSWS could reach (45.0 ± 12.9)%.The work was supported by the National Key Research and Development Program of China (2018YFA0606004), Natural Science Foundation of China (42005023, 41875178, 41865001), Swedish Formas (2019-00509 and 2017-01408), and VR (2021-02163 and 2019-03954). This work is also supported by the High-level Talents Program of Yunnan University, the Program for “Xingdian” Talent of Yunnan Province, the Program for Key Laboratory at the University of Yunnan Province, and the Chinese Jiangsu Collaborative Innovation Center for Climate Change.Peer reviewedElsevierNational Key Research and Development Program (China)Natural Science Foundation of Yunnan ProvinceYunnan UniversityConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/303414reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.accre.2022.10.005Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3034142026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
title Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
spellingShingle Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
Zha, Jinlin
Near-surface wind speed
Temperature gradient
Pressure gradient
Northern Hemisphere Annular Mode
Large-scale ocean–atmosphere circulations
title_short Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
title_full Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
title_fullStr Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
title_full_unstemmed Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
title_sort Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
dc.creator.none.fl_str_mv Zha, Jinlin
Shen, Cheng
Wu, Jian
Zhao, Deming
Fan, Wenxuan
Jiang, Hui-Ping
Azorín-Molina, César
Chen, Deliang
author Zha, Jinlin
author_facet Zha, Jinlin
Shen, Cheng
Wu, Jian
Zhao, Deming
Fan, Wenxuan
Jiang, Hui-Ping
Azorín-Molina, César
Chen, Deliang
author_role author
author2 Shen, Cheng
Wu, Jian
Zhao, Deming
Fan, Wenxuan
Jiang, Hui-Ping
Azorín-Molina, César
Chen, Deliang
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv National Key Research and Development Program (China)
Natural Science Foundation of Yunnan Province
Yunnan University
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Near-surface wind speed
Temperature gradient
Pressure gradient
Northern Hemisphere Annular Mode
Large-scale ocean–atmosphere circulations
topic Near-surface wind speed
Temperature gradient
Pressure gradient
Northern Hemisphere Annular Mode
Large-scale ocean–atmosphere circulations
description Large-scale ocean‒atmosphere circulations (LOACs) have a pronounced effect on the near-surface wind speed (NSWS). In this study, we discussed the contributions of zonal and meridional flows to NSWS changes and identify the possible association between the Northern Hemisphere Annular Mode (NAM) and the NSWS changes over eastern China from 1979 to 2017. Results show that the reduction in NSWS over eastern China was mainly dominated by the weakening of the zonal wind component. NAM has a considerable effect on the NSWS over eastern China. When the NAM exhibits positive phases, the zonal-mean westerly weakens at low-to-mid-latitudes (10°–40°N). Meanwhile, descending flows prevail near 40°N, and ascending flows persist near 65°N in the troposphere. In the lower troposphere, there are northerly anomalies at low-to-mid-latitudes and southerly anomalies at mid-to-high latitudes (40°–70°N). The anomalous meridional flows transport heat from low to high latitudes and weaken the north‒south air temperature gradient. The decreased air temperature gradient over East Asia reduces the pressure gradient near the surface, decreasing NSWS in eastern China. NAM variations could dominate (32.0 ± 15.8)% of the changes in the annual mean NSWS. Nevertheless, the contribution of NAM to the interannual changes of the zonal component in NSWS could reach (45.0 ± 12.9)%.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/303414
url http://hdl.handle.net/10261/303414
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.accre.2022.10.005
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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