Evaporative cooling over the Tibetan Plateau induced by vegetation   growth

doi:10.1073/pnas.1504418112

CORC > 北京大学 > 城市与环境学院

	Evaporative cooling over the Tibetan Plateau induced by vegetation growth
	Shen, Miaogen ; Piao, Shilong ; Jeong, Su-Jong ; Zhou, Liming ; Zeng, Zhenzhong ; Ciais, Philippe ; Chen, Deliang ; Huang, Mengtian ; Jin, Chun-Sil ; Li, Laurent Z. X. ; Li, Yue ; Myneni, Ranga B. ; Yang, Kun ; Zhang, Gengxin ; Zhang, Yangjian ; Yao, Tandong
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2015
关键词	climate change feedback evapotranspiration vegetation Tibetan Plateau DIURNAL TEMPERATURE-RANGE CLIMATE-CHANGE CONVECTIVE PARAMETERIZATION ALPINE MEADOW IMPACTS MODIS RADIATION MODEL PRECIPITATION SENSITIVITY
DOI	10.1073/pnas.1504418112
英文摘要	In the Arctic, climate warming enhances vegetation activity by extending the length of the growing season and intensifying maximum rates of productivity. In turn, increased vegetation productivity reduces albedo, which causes a positive feedback on temperature. Over the Tibetan Plateau (TP), regional vegetation greening has also been observed in response to recent warming. Here, we show that in contrast to arctic regions, increased growing season vegetation activity over the TP may have attenuated surface warming. This negative feedback on growing season vegetation temperature is attributed to enhanced evapotranspiration (ET). The extra energy available at the surface, which results from lower albedo, is efficiently dissipated by evaporative cooling. The net effect is a decrease in daily maximum temperature and the diurnal temperature range, which is supported by statistical analyses of in situ observations and by decomposition of the surface energy budget. A daytime cooling effect from increased vegetation activity is also modeled from a set of regional weather research and forecasting (WRF) mesoscale model simulations, but with a magnitude smaller than observed, likely because the WRF model simulates a weaker ET enhancement. Our results suggest that actions to restore native grasslands in degraded areas, roughly one-third of the plateau, will both facilitate a sustainable ecological development in this region and have local climate cobenefits. More accurate simulations of the biophysical coupling between the land surface and the atmosphere are needed to help understand regional climate change over the TP, and possible larger scale feedbacks between climate in the TP and the Asian monsoon system.; Chinese Academy of Sciences [XDB03030404]; National Basic Research Program of China [2013CB956303]; National Natural Science Foundation of China [41125004]; Youth Innovation Promotion Association of the Chinese Academy of Sciences [2015055]; SCI(E); PubMed; ARTICLE; shen.miaogen@gmail.com; slpiao@pku.edu.cn; 30; 9299-9304; 112
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418078]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Shen, Miaogen,Piao, Shilong,Jeong, Su-Jong,et al. Evaporative cooling over the Tibetan Plateau induced by vegetation growth[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2015.
APA	Shen, Miaogen.,Piao, Shilong.,Jeong, Su-Jong.,Zhou, Liming.,Zeng, Zhenzhong.,...&Yao, Tandong.(2015).Evaporative cooling over the Tibetan Plateau induced by vegetation growth.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA.
MLA	Shen, Miaogen,et al."Evaporative cooling over the Tibetan Plateau induced by vegetation growth".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2015).