气候变化领域集成服务门户(CCPortal): Observed Coherent Trends of Surface and Upper-Air Wind Speed over China since 1960

CCPortal

DOI	10.1175/JCLI-D-12-00093.1
	Observed Coherent Trends of Surface and Upper-Air Wind Speed over China since 1960
	Lin, Changgui; Yang, Kun; Qin, Jun; Fu, Rong
通讯作者	Yang, K (通讯作者)
发表日期	2013
ISSN	0894-8755
EISSN	1520-0442
起始页码	2891
结束页码	2903
卷号	26 期号:9
英文摘要	Previous studies indicated that surface wind speed over China declined during past decades, and several explanations exist in the literature. This study presents long-term (1960-2009) changes of both surface and upper-air wind speeds over China and addresses observed evidence to interpret these changes. It is found that surface wind over China underwent a three-phase change over the past 50 yr: (i) it step changed to a strong wind level at the end of the 1960s, (ii) it declined until the beginning of the 2000s, and (iii) it seemed to be steady and even recovering during the very recent years. The variability of surface wind speed is greater at higher elevations and less at lower elevations. In particular, surface wind speed over the elevated Tibetan Plateau has changed more significantly. Changes in upper-air wind speed observed from rawinsonde are similar to surface wind changes. The NCEP-NCAR reanalysis indicates that wind speed changes correspond to changes in geopotential height gradient at 500 hPa. The latter are further correlated with the changes of latitudinal surface temperature gradient, with a correlation coefficient of 0.88 for the past 50 yr over China. This strongly suggests that the spatial gradient of surface global warming or cooling may significantly change surface wind speed at a regional scale through atmospheric thermal adaption. The recovery of wind speed since the beginning of the 2000s over the Tibetan Plateau might be a precursor of the reversal of wind speed trends over China, as wind over high elevations can respond more rapidly to the warming gradient and atmospheric circulation adjustment.
关键词	ATMOSPHERIC HEAT-SOURCE TIBETAN PLATEAU GEOPOTENTIAL HEIGHT WEAKENING TREND OSCILLATION TEMPERATURE SUMMER CIRCULATION MONSOON
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000318159500012
来源期刊	JOURNAL OF CLIMATE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258212
推荐引用方式 GB/T 7714	Lin, Changgui,Yang, Kun,Qin, Jun,et al. Observed Coherent Trends of Surface and Upper-Air Wind Speed over China since 1960[J]. 中国科学院青藏高原研究所,2013,26(9).
APA	Lin, Changgui,Yang, Kun,Qin, Jun,&Fu, Rong.(2013).Observed Coherent Trends of Surface and Upper-Air Wind Speed over China since 1960.JOURNAL OF CLIMATE,26(9).
MLA	Lin, Changgui,et al."Observed Coherent Trends of Surface and Upper-Air Wind Speed over China since 1960".JOURNAL OF CLIMATE 26.9(2013).