气候变化领域集成服务门户(CCPortal): Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017

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DOI	10.1016/j.accre.2022.10.005
	Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017
	Zha, Jin-Lin; Shen, Cheng; Wu, Jian; Zhao, De-Ming; Fan, Wen-Xuan; Jiang, Hui-Ping; Azorin-Molina, Cesar; Chen, Deliang
发表日期	2022
ISSN	1674-9278
起始页码	875
结束页码	883
卷号	13 期号:6 页码:9
英文摘要	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 degrees-40 degrees N). Meanwhile, descending flows prevail near 40 degrees N, and ascending flows persist near 65 degrees 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 degrees-70 degrees 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)%.
英文关键词	Near-surface wind speed; Temperature gradient; Pressure gradient; Northern Hemisphere Annular Mode; Large-scale ocean-atmosphere circulations
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000925587800001
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273974
作者单位	Yunnan University; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; University of Gothenburg; Chinese Academy of Sciences; Consejo Superior de Investigaciones Cientificas (CSIC); University of Valencia; CSIC-GV-UV - Centro de Investigaciones sobre Desertificacion (CIDE)
推荐引用方式 GB/T 7714	Zha, Jin-Lin,Shen, Cheng,Wu, Jian,et al. Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017[J],2022,13(6):9.
APA	Zha, Jin-Lin.,Shen, Cheng.,Wu, Jian.,Zhao, De-Ming.,Fan, Wen-Xuan.,...&Chen, Deliang.(2022).Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017.ADVANCES IN CLIMATE CHANGE RESEARCH,13(6),9.
MLA	Zha, Jin-Lin,et al."Effects of Northern Hemisphere Annular Mode on terrestrial near-surface wind speed over eastern China from 1979 to 2017".ADVANCES IN CLIMATE CHANGE RESEARCH 13.6(2022):9.