干旱区生态环境知识资源中心(Arid): Dense flux observations reveal the incapability of evapotranspiration products to capture the heterogeneity of evapotranspiration

Arid

DOI	10.1016/j.jhydrol.2023.129743
	Dense flux observations reveal the incapability of evapotranspiration products to capture the heterogeneity of evapotranspiration
	Wu, Jie; Feng, Yu; Zheng, Chunmiao; Zeng, Zhenzhong
通讯作者	Feng, Y ; Zeng, ZZ
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	622
英文摘要	Accurate terrestrial evapotranspiration (ET) estimation over complex surfaces with spatial heterogeneity is crucial for local, regional, and global applications. Currently, a variety of global ET products with different spatiotemporal resolutions have been developed and evaluated. However, little is known about their perfor-mance in capturing the heterogeneity of ET over complex surfaces. Focusing on the Heihe River Basin (HRB), a typical arid and semi-arid region that is hydrologically vulnerable, this study compared ET from eleven global ET products (six remotely-sensed ET, two land surface model ET, one hydrological model-based ET, one reanalysis ET, and one synthesis ET) and one regional ET dataset against dense eddy covariance observations in terms of the magnitude, seasonal cycle, and spatial pattern. In general, the remotely-sensed ET and synthesis ET out-performed other categories, with the operational Simplified Surface Energy Balance (SSEBop), Penman-Mon-teith-Leuning (PML), Moderate Resolution Imaging Spectroradiometer (MOD16) and Global LAnd Surface Satellite (GLASS) performing relatively better (root mean square error ranging from 1.22 to 1.57 mm d-1). Across all the land cover types, ET products reproduced a relatively feasible ET over the desert steppe, meadow, and barren, but substantially underestimated ET over ecosystems with high ET values but a low land area fraction over HRB (cropland, wetland, and forest). This highlights the importance of accurately representing the het-erogeneity and local climates in the complex land surfaces for ET quantification in regional water resource management.
英文关键词	Eddy covariance Arid regions Land cover types Remote sensing
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:001014714700001
WOS关键词	TERRESTRIAL EVAPOTRANSPIRATION ; GLOBAL EVAPOTRANSPIRATION ; ENERGY-BALANCE ; HEIHE RIVER ; HEAT-FLUX ; WATER ; EVAPORATION ; MODIS ; SOIL ; PARAMETERIZATION
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/2XILL650/397404
推荐引用方式 GB/T 7714	Wu, Jie,Feng, Yu,Zheng, Chunmiao,et al. Dense flux observations reveal the incapability of evapotranspiration products to capture the heterogeneity of evapotranspiration[J],2023,622.
APA	Wu, Jie,Feng, Yu,Zheng, Chunmiao,&Zeng, Zhenzhong.(2023).Dense flux observations reveal the incapability of evapotranspiration products to capture the heterogeneity of evapotranspiration.JOURNAL OF HYDROLOGY,622.
MLA	Wu, Jie,et al."Dense flux observations reveal the incapability of evapotranspiration products to capture the heterogeneity of evapotranspiration".JOURNAL OF HYDROLOGY 622(2023).