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DOI	10.1088/1748-9326/aaea84
	Global terrestrial stilling: does Earth's greening play a role ?
	Zeng, Zhenzhong; Piao, Shilong; Li, Laurent Z. X.; Ciais, Philippe; Li, Yue; Cai, Xitian; Yang, Long; Liu, Maofeng; Wood, Eric F.
通讯作者	Piao, SL (通讯作者)
发表日期	2018
ISSN	1748-9326
卷号	13 期号:12
英文摘要	Previous studies have documented that surface wind speed (u) has been increasing over the ocean but decreasing over land for the past several decades. The decreasing u at the surface over land has been referred to as terrestrial stilling. A plausible hypothesis for terrestrial stilling is an increase in surface roughness associated with changes in land surface (e.g. enhanced vegetation growth, landscape fragmentation or urbanization). One of the most widespread land surface changes is enhanced vegetation leaf area index (LAI) known as greening, particularly over the middle to high latitudes of the Northern Hemisphere where strong stilling is observed from weather station data. In this study, we examine the hypothesis that enhanced vegetation LAI is a key driver of global terrestrial stilling. We first characterized the trend in u over the ocean using long-term satellite altimeter measurements, and the trend in u over land using continuous wind records from 4305 in situ meteorological stations. We then performed initial condition ensemble Atmospheric Model Intercomparison Project-type simulations using two state-of-the-art Earth system models (IPSL-CM and CESM) to isolate the response of u to the historical increase in LAI (representing the greening) for the period 1982-2011. Both models, forced with observed sea surface temperature and sea ice and with LAI from satellite observation, captured the observed strengthening of Pacific trade winds and Southern Ocean westerly winds. However, these simulations did not reproduce the weakening of surface winds over land as significantly as it appears in the observations (-0.006 m s(-1) versus -0.198 m s(-1) during 1982-2011), indicating that enhanced LAI (greening) is not a dominant driver for terrestrial stilling.
关键词	WIND-SPEED LAND-SURFACE IMPACT TEMPERATURE TRENDS CIRCULATION EXPANSION PATTERNS PACIFIC
英文关键词	terrestrial stilling; Earth's greening; surface wind speed; surface roughness; leaf area index; weather station
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000452046500001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
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/259367
推荐引用方式 GB/T 7714	Zeng, Zhenzhong,Piao, Shilong,Li, Laurent Z. X.,et al. Global terrestrial stilling: does Earth's greening play a role ?[J]. 中国科学院青藏高原研究所,2018,13(12).
APA	Zeng, Zhenzhong.,Piao, Shilong.,Li, Laurent Z. X..,Ciais, Philippe.,Li, Yue.,...&Wood, Eric F..(2018).Global terrestrial stilling: does Earth's greening play a role ?.ENVIRONMENTAL RESEARCH LETTERS,13(12).
MLA	Zeng, Zhenzhong,et al."Global terrestrial stilling: does Earth's greening play a role ?".ENVIRONMENTAL RESEARCH LETTERS 13.12(2018).