干旱区生态环境知识资源中心(Arid): Estimating Regional Evapotranspiration Using a Satellite-Based Wind Speed Avoiding Priestley-Taylor Approach

Arid

DOI	10.3390/w13213144
	Estimating Regional Evapotranspiration Using a Satellite-Based Wind Speed Avoiding Priestley-Taylor Approach
	Sun, Jingjing; Wang, Wen; Wang, Xiaogang; Huang, Dui
通讯作者	Wang, W (corresponding author), Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:21
英文摘要	Wind speed (u) is a significant constraint in the evapotranspiration modeling over the highly heterogeneous regional surface due to its high temporal-spatial variation. In this study, a satellite-based Wind Speed Avoiding Priestley-Taylor (WAPT) algorithm was proposed to estimate the regional actual evapotranspiration by employing a u-independent theoretical trapezoidal space to determine the pixel Priestley-Taylor (PT) parameter phi. The WAPT model was comprehensively evaluated with hydro-meteorological observations in the arid Heihe River Basin in northwestern China. The results show that the WAPT model can provide reliable latent heat flux estimations with the root-mean-square error (RMSE) of 46.0 W/m(2) across 2013-2018 for 5 long-term observation stations and the RMSE of 49.6 W/m(2) in the growing season in 2012 for 21 stations with intensive observations. The estimation by WAPT has a higher precision in the vegetation growing season than in the non-growing season. The estimation by WAPT has a closer agreement with the ground observations for vegetation-covered surfaces (e.g., corn and wetland) than that for dry sites (e.g., Gobi, desert, and desert steppe).
英文关键词	evapotranspiration remote sensing trapezoidal space wind speed Priestley-Taylor equation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000720465700001
WOS关键词	SURFACE-ENERGY FLUXES ; HEIHE RIVER ; HEAT-FLUX ; TRAPEZOIDAL RELATIONSHIP ; TEMPERATURE RETRIEVAL ; VEGETATION INDEX ; TRIANGLE METHOD ; SOIL-MOISTURE ; WATER-BALANCE ; MODEL
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373816
作者单位	[Sun, Jingjing; Wang, Wen] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Peoples R China; [Wang, Xiaogang] Pearl River Water Resources Res Inst, Guangzhou 510611, Peoples R China; [Huang, Dui] Nanjing Hydraul Res Inst, Hydrol Water Resources Dept, Nanjing 210029, Peoples R China
推荐引用方式 GB/T 7714	Sun, Jingjing,Wang, Wen,Wang, Xiaogang,et al. Estimating Regional Evapotranspiration Using a Satellite-Based Wind Speed Avoiding Priestley-Taylor Approach[J],2021,13(21).
APA	Sun, Jingjing,Wang, Wen,Wang, Xiaogang,&Huang, Dui.(2021).Estimating Regional Evapotranspiration Using a Satellite-Based Wind Speed Avoiding Priestley-Taylor Approach.WATER,13(21).
MLA	Sun, Jingjing,et al."Estimating Regional Evapotranspiration Using a Satellite-Based Wind Speed Avoiding Priestley-Taylor Approach".WATER 13.21(2021).