An Improved Method for Deriving Daily Evapotranspiration Estimates from Satellite Estimates on Cloud-Free Days

	An Improved Method for Deriving Daily Evapotranspiration Estimates from Satellite Estimates on Cloud-Free Days
	Wu, Bingfang; Zhu, Weiwei; Yan, Nana; Feng, Xueliang; Xing, Qiang; Zhuang, Qifeng
刊名	IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
	2016
卷号	9 期号:4 页码:1323-1330
关键词	SEA-SURFACE TEMPERATURE EQUATORIAL PACIFIC EL-NINO WAVELET COHERENCE COUPLED PATTERNS CLIMATE INDEXES SEAWIFS DATA OCEAN PHYTOPLANKTON SATELLITE
通讯作者	Wu, Bingfang (wubf@radi.ac.cn)
英文摘要	An improved method, based on the daily surface resistance, is proposed to extend satellite evapotranspiration (ET) on a clear day into ET for each and every day. Alternative climatic variables such as soil moisture, wind speed, and net radiation are explored for estimating daily surface resistance using a Penman-Monteith (P-M) formulation. The study was carried out for the Yingke (YK) oasis plains area (maize cropland) and the Arou (AR) alpine meadow area (grassland) located in the midstream and upstream, respectively, of the Heihe River Basin of northwestern China. Statistical results show that the proposed method performs well for estimating daily ET for both study areas, with results slightly superior in the midstream, cropland area where the coefficient of determination (R2) was 0.9249 and the index of agreement (d) was 0.978. In the upstream alpine meadow area, the coefficient of determination (R2) was 0.9074, and the index of agreement (d) was 0.961. The proposed method provides an enhanced approach for estimating daily ET in the ETWatch model. Future work will focus on scaling this improved method to the estimation of regional daily ET map. © 2015 IEEE.
学科主题	Engineering; Physical Geography; Remote Sensing; Imaging Science & Photographic Technology
类目[WOS]	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:20160401844979
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39279]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	Division for Digital Agriculture, Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Beijing, China
推荐引用方式 GB/T 7714	Wu, Bingfang,Zhu, Weiwei,Yan, Nana,et al. An Improved Method for Deriving Daily Evapotranspiration Estimates from Satellite Estimates on Cloud-Free Days[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2016,9(4):1323-1330.
APA	Wu, Bingfang,Zhu, Weiwei,Yan, Nana,Feng, Xueliang,Xing, Qiang,&Zhuang, Qifeng.(2016).An Improved Method for Deriving Daily Evapotranspiration Estimates from Satellite Estimates on Cloud-Free Days.IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,9(4),1323-1330.
MLA	Wu, Bingfang,et al."An Improved Method for Deriving Daily Evapotranspiration Estimates from Satellite Estimates on Cloud-Free Days".IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 9.4(2016):1323-1330.