干旱区生态环境知识资源中心(Arid): The intercomparison of six 0.1°x0.1° spatial resolution evapotranspiration products across mainland China

Arid

DOI	10.1016/j.jhydrol.2024.130949
	The intercomparison of six 0.1°x0.1° spatial resolution evapotranspiration products across mainland China
	Shi, Xinrong; She, Dunxian; Xia, Jun; Liu, Renli; Wang, Tianyue
通讯作者	She, DX
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2024
卷号	633
英文摘要	Terrestrial evapotranspiration (ET) is a critical variable connecting water, energy and carbon cycles. Many high spatial resolution (0.1 degrees x0.1 degrees) remote sensing based ET (ETRS) products have been released and provide useful information for ET-related analysis. However, the accuracy of these ET products differs largely in space and time due to the estimation method and forcing data in producing the ET data, which raises the demand for the intercomparison of the capacity and applicability of these datasets to give an integrated suggestion of how to choose the optimal dataset for a specific region. In this study, we intercompare the performance of six ETRS products (AVHRR, GLASS, GLEAM, IDAHO, MODIS, and PML-V2) in mainland China during 2001-2018. The comparison of eddy covariance (EC) between ET from flux sites (ETOBS) and the estimated ET given by the terrestrial water balance method (ETTWB) at an annual time scale demonstrated good performance of these ET products in capturing the ET changes in mainland China, although there still exist some discrepancies among different ET products. PML-V2 outperforms other products with the lowest root-mean-squared-deviation (RMSE) and the highest Nash-Sutcliffe efficiency coefficient (NSE) compared to the ground-based observations from the flux network. GLEAM has the best correlation with ETTWB. A southeast-to-northwest ET gradient can be found across the study area with the range of 350-450 mm/yr and the majority of mainland China exhibited an increasing ET trend from 0.213 mm/yr2 to 3.178 mm/yr2 during 2001-2018. We also find that PML-V2 and GLASS are the most reliable products in the humid and semi-humid areas of mainland China, while GLEAM are the most effective products in arid and semi-arid areas of China. The results of this study can provide useful information on how to choose the relative ET products for water resources management and planning.
英文关键词	Terrestrial evapotranspiration Remote sensing Terrestrial water balance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001205581400001
WOS关键词	EDDY COVARIANCE ; PAN EVAPORATION ; WATER-BALANCE ; GLOBAL EVAPOTRANSPIRATION ; RIVER-BASIN ; VARIABILITY ; SURFACE ; MODELS ; MODIS ; MOD16
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/2XILL650/404566
推荐引用方式 GB/T 7714	Shi, Xinrong,She, Dunxian,Xia, Jun,et al. The intercomparison of six 0.1°x0.1° spatial resolution evapotranspiration products across mainland China[J],2024,633.
APA	Shi, Xinrong,She, Dunxian,Xia, Jun,Liu, Renli,&Wang, Tianyue.(2024).The intercomparison of six 0.1°x0.1° spatial resolution evapotranspiration products across mainland China.JOURNAL OF HYDROLOGY,633.
MLA	Shi, Xinrong,et al."The intercomparison of six 0.1°x0.1° spatial resolution evapotranspiration products across mainland China".JOURNAL OF HYDROLOGY 633(2024).