干旱区生态环境知识资源中心(Arid): An Evaporation Correction Approach and Its Characteristics

Arid

DOI	10.1175/JHM-D-18-0211.1
	An Evaporation Correction Approach and Its Characteristics
	Li, Jiamin; Wang, Chenghai
通讯作者	Wang, CH
来源期刊	JOURNAL OF HYDROMETEOROLOGY
ISSN	1525-755X
EISSN	1525-7541
出版年	2020
卷号	21 期号:3 页码:519-532
英文摘要	Evaporation is a principal factor in the hydrological cycle and energy exchange; however, estimations of evaporation include large uncertainties. In this study, a modified estimation of evaporation based on empirical linearly simplified Penman evaporation (PES) is proposed, soil moisture and precipitation are used to correct the land surface evaporation estimation, and the temporal and spatial characteristics of the corrected evaporation (CE) are investigated globally. The results show that CE is strong at low latitudes and weak at high latitudes. CE has obvious seasonal variation, ranging from 0.2 to 4.0 mm day(-1); CE is prominent in summer but feeble in winter. Compared to PES, CE is generally weaker in most regions, especially in arid regions, with differences of more than 9 mm day(-1). CE agrees well with evaporation derived from FLUXNET-Model Tree Ensemble (FLUXNET-MTE), MERRA, and GLDAS. In general, the root-mean-square error (RMSE) between annual CE and FLUXNET-MTE is less than 0.2 mm day(-1), and CE is about 5%-10% less than the evaporation of FLUXNET-MTE. In the arid regions, the maximum CE almost occurs in the month with the strongest precipitation; in the tropical regions, soil moisture enhances CE only when precipitation is less. In the context of global temperature rise, PES always shows an apparent increasing trend due to the water supply is not considered; however, CE decreases in western Asia, the western United States, the Amazon basin, and Central Africa, but weakly increases in the other study regions from 1984 to 2013. This study provides a method for estimating evaporation considering more restrictive factors on evaporation.
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000559755400004
WOS关键词	WATER ; EVAPOTRANSPIRATION ; PRECIPITATION ; TRANSPIRATION ; FUTURE ; SOIL
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325625
作者单位	[Li, Jiamin; Wang, Chenghai] Lanzhou Univ, Coll Atmospher Sci, Key Lab Arid Climate Change & Disaster Reduct Gan, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiamin,Wang, Chenghai. An Evaporation Correction Approach and Its Characteristics[J]. 兰州大学,2020,21(3):519-532.
APA	Li, Jiamin,&Wang, Chenghai.(2020).An Evaporation Correction Approach and Its Characteristics.JOURNAL OF HYDROMETEOROLOGY,21(3),519-532.
MLA	Li, Jiamin,et al."An Evaporation Correction Approach and Its Characteristics".JOURNAL OF HYDROMETEOROLOGY 21.3(2020):519-532.