干旱区生态环境知识资源中心(Arid): Consistency and uncertainty of gridded terrestrial evapotranspiration estimations over China

Arid

DOI	10.1016/j.jhydrol.2022.128245
	Consistency and uncertainty of gridded terrestrial evapotranspiration estimations over China
	Guo, Linan; Wu, Yanhong; Zheng, Hongxing; Zhang, Bing; Fan, Lanxin; Chi, Haojing; Yan, Bokun; Wang, Xiaoqi
通讯作者	Wu, YH
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2022
卷号	612
英文摘要	Terrestrial evapotranspiration (ET) is a critical process in water, energy and carbon cycles but challenging to estimate. Several gridded terrestrial ET products have been developed for regional or global applications based on different algorithms and forcing inputs and with different temporal-spatial resolutions and accuracy. This study systematically investigates the consistency and uncertainty of eight ET products over China for the period from 2003 to 2014. Temporal and spatial pairwise correlation analysis indicates that the ET products are largely consistent with each other, among which the ET estimates from GLEAM and EB-ET presenting highest spatial consistency with each other (R-2 = 0.91). Compared to the ground-based observations from the flux network, the centered root-mean-squared-deviation (RMSD) for each of the eight products is found lower than 30 mm/month, according to which CR and PMLv2 outperform the others. The ET products however show considerable difference in the estimated mean annual ET averaged over China (from 378 mm/a to 528 mm/a). Uncertainty assessment based on the extended collocation method (ECM) suggests the uncertainties in ET estimates are more evident in the arid region than in the humid region. It also indicates that model averaging (like that in generating the GLASS ET product) could substantially reduce the uncertainties. The findings of this research could facilitate the application of the ET products to assess water balance dynamics over China while considering their uncertainties.
英文关键词	Terrestrial evapotranspiration Remote sensing Consistency and uncertainty China
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000844339700003
WOS关键词	ENERGY-BALANCE CLOSURE ; WACMOS-ET PROJECT ; LATENT-HEAT FLUX ; SOIL-MOISTURE ; DATA SET ; PRODUCTS ; EVAPORATION ; IMPACTS ; TREND ; GLEAM
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393499
推荐引用方式 GB/T 7714	Guo, Linan,Wu, Yanhong,Zheng, Hongxing,et al. Consistency and uncertainty of gridded terrestrial evapotranspiration estimations over China[J],2022,612.
APA	Guo, Linan.,Wu, Yanhong.,Zheng, Hongxing.,Zhang, Bing.,Fan, Lanxin.,...&Wang, Xiaoqi.(2022).Consistency and uncertainty of gridded terrestrial evapotranspiration estimations over China.JOURNAL OF HYDROLOGY,612.
MLA	Guo, Linan,et al."Consistency and uncertainty of gridded terrestrial evapotranspiration estimations over China".JOURNAL OF HYDROLOGY 612(2022).