Clustering analysis of regional reference evapotranspiration and its components based on climatic variables across northeast China, 1961-2010

doi:10.2166/wcc.2015.217

	Clustering analysis of regional reference evapotranspiration and its components based on climatic variables across northeast China, 1961-2010
	Liu, Yuan 1,2,3; Liu, Buchun 1,2,3; Yang, Xiaojuan 1,2,3; Bai, Wei 1,2,3
刊名	JOURNAL OF WATER AND CLIMATE CHANGE
	2016
卷号	7 期号:1 页码:128-141
关键词	climatic variable clustering analysis northeast China Penman-Monteith equation reference evapotranspiration thermodynamic and aerodynamic components
ISSN号	2040-2244
DOI	10.2166/wcc.2015.217
通讯作者	Liu, Yuan
英文摘要	Evapotranspiration integrates atmospheric demand and surface conditions. The Penman-Monteith equation was used to calculate annual and seasonal reference evapotranspiration (ET0) and thermodynamic and aerodynamic components (ETrad and ETaero) at 77 stations across northeast China, 1961-2010. The results were: (1) annual ETrad and ETaero had different regional distribution, annual ETrad values decreased from south to north, whereas the highest ETaero values were recorded in the eastern and western regions, the lowest in the central region; (2) seasonal ETaero distributions were similar to seasonal ET0, with a south-north longitudinal pattern, while seasonal ETrad distributions had a latitudinal east-west pattern; and (3) in the group for ET0 containing 69 sampling stations, effects of climatic variables on ET0 followed sunshine hours> relative humidity> maximum temperature> wind speed. Changes in sunshine hours had the greatest effect on ETrad, but wind speed and relative humidity were the most important variables to ETaero. The decline in sunshine duration, wind speed, or both over the study period appeared to be the major cause of reduced potential evapotranspiration in most of NEC. Wind speed had opposite effects on ETrad and ETaero, and therefore the effect of wind speed on ET0 was not significant.
学科主题	Water Resources
语种	英语
出版者	IWA PUBLISHING
WOS记录号	WOS:000374410900010
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19720]
专题	农业环境与可持续发展研究所
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China 2.Minist Agr, Key Lab Agr Environm, Beijing 100081, Peoples R China 3.Natl Engn Lab Efficient Water Use & Crop Disaster, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yuan,Liu, Buchun,Yang, Xiaojuan,et al. Clustering analysis of regional reference evapotranspiration and its components based on climatic variables across northeast China, 1961-2010[J]. JOURNAL OF WATER AND CLIMATE CHANGE,2016,7(1):128-141.
APA	Liu, Yuan,Liu, Buchun,Yang, Xiaojuan,&Bai, Wei.(2016).Clustering analysis of regional reference evapotranspiration and its components based on climatic variables across northeast China, 1961-2010.JOURNAL OF WATER AND CLIMATE CHANGE,7(1),128-141.
MLA	Liu, Yuan,et al."Clustering analysis of regional reference evapotranspiration and its components based on climatic variables across northeast China, 1961-2010".JOURNAL OF WATER AND CLIMATE CHANGE 7.1(2016):128-141.