干旱区生态环境知识资源中心(Arid): Changes in Mean and Extreme Temperature and Precipitation over the Arid Region of Northwestern China: Observation and Projection

Arid

	Changes in Mean and Extreme Temperature and Precipitation over the Arid Region of Northwestern China: Observation and Projection
	Wang Yujie; Zhou Botao; Qin Dahe; Wu Jia; Gao Rong; Song Lianchun
来源期刊	Advances in Atmospheric Sciences
ISSN	0256-1530
出版年	2017
卷号	34 期号:3 页码:289-305
英文摘要	This paper reports a comprehensive study on the observed and projected spatiotemporal changes in mean and extreme climate over the arid region of northwestern China, based on gridded observation data and CMIP5 simulations under the RCP4.5 and RCP8.5 scenarios. The observational results reveal an increase in annual mean temperature since 1961, largely attributable to the increase in minimum temperature. The annual mean precipitation also exhibits a significant increasing tendency. The precipitation amount in the most recent decade was greater than in any preceding decade since 1961. Seasonally, the greatest increase in temperature and precipitation appears in winter and in summer, respectively. Widespread significant changes in temperature-related extremes are consistent with warming, with decreases in cold extremes and increases in warm extremes. The warming of the coldest night is greater than that of the warmest day, and changes in cold and warm nights are more evident than for cold and warm days. Extreme precipitation and wet days exhibit an increasing trend, and the maximum number of consecutive dry days shows a tendency toward shorter duration. Multi-model ensemble mean projections indicate an overall continual increase in temperature and precipitation during the 21st century. Decreases in cold extremes, increases in warm extremes, intensification of extreme precipitation, increases in wet days, and decreases in consecutive dry days, are expected under both emissions scenarios, with larger changes corresponding to stronger radiative forcing.
英文关键词	climate change arid region observation CMIP5 projection
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Physics
CSCD记录号	CSCD:5927872
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335765
作者单位	Wang Yujie, School of Atmospheric Sciences, Nanjing University, Nanjing, Jiangsu 210046, China.; Zhou Botao, National Climate Center, China Meteorological Administration, Beijing 100081, China.; Qin Dahe, National Climate Center, China Meteorological Administration, Beijing 100081, China.; Wu Jia, National Climate Center, China Meteorological Administration, Beijing 100081, China.; Gao Rong, National Climate Center, China Meteorological Administration, Beijing 100081, China.; Song Lianchun, National Climate Center, China Meteorological Administration, Beijing 100081, China.
推荐引用方式 GB/T 7714	Wang Yujie,Zhou Botao,Qin Dahe,et al. Changes in Mean and Extreme Temperature and Precipitation over the Arid Region of Northwestern China: Observation and Projection[J],2017,34(3):289-305.
APA	Wang Yujie,Zhou Botao,Qin Dahe,Wu Jia,Gao Rong,&Song Lianchun.(2017).Changes in Mean and Extreme Temperature and Precipitation over the Arid Region of Northwestern China: Observation and Projection.Advances in Atmospheric Sciences,34(3),289-305.
MLA	Wang Yujie,et al."Changes in Mean and Extreme Temperature and Precipitation over the Arid Region of Northwestern China: Observation and Projection".Advances in Atmospheric Sciences 34.3(2017):289-305.