气候变化领域集成服务门户(CCPortal): The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling

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DOI	10.1029/2019WR024867
	The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling
	Ma, Ning; Szilagyi, Jozsef
通讯作者	Szilagyi, J (通讯作者)
发表日期	2019
ISSN	0043-1397
EISSN	1944-7973
起始页码	7246
结束页码	7274
卷号	55 期号:8
英文摘要	Monthly evapotranspiration (ET) rates for 1979-2015 were estimated by the latest, calibration-free version of the complementary relationship (CR) of evaporation over the conterminous United States. The results were compared to similar estimates of three land surface models (Noah, VIC, Mosaic), two reanalysis products (National Centers of Environmental Protection Reanalysis II, ERA-Interim), two remote-sensing-based (Global Land Evaporation Amsterdam Model, Penman-Monteith-Leuning) algorithms, and the spatially upscaled eddy-covariance ET measurements of FLUXNET-MTE. Model validations were performed via simplified water-balance derived ET rates employing Parameter-Elevation Regressions on Independent Slopes Model precipitation, United States Geological Survey two- and six-digit Hydrologic Unit Code (HUC2 and HUC6) discharge, and terrestrial water storage anomalies from Gravity Recovery and Climate Experiment, the latter for 2003-2015. The CR outperforms all other multiyear mean annual HUC2-averaged ET estimates with root-mean-square error = 51 mm/year, R = 0.98, relative bias of -1%, and Nash-Sutcliffe efficiency = 0.94, respectively. Inclusion of the Gravity Recovery and Climate Experiment data into the annual water balances for the shorter 2003-2015 period does not have much effect on model performance. Similarly, the CR outperforms all other models for the linear trend of the annual ET rates over the HUC2 basins. Over the significantly smaller HUC6 basins where the water-balance validation is more uncertain, the CR still outperforms all other models except FLUXNET-MTE, which has the advantage of possible local ET measurements, a benefit that clearly diminishes at the HUC2 scale. As the employed CR is calibration-free and requires only very few meteorological inputs, yet it yields superior ET performance at the regional scale, it may serve as a diagnostic and benchmarking tool for more complex and data intensive models of terrestrial evapotranspiration rates.
关键词	LAND-SURFACE WATER COMPLEMENTARY-RELATIONSHIP VAPOR TRANSPORT TURBULENT HEAT SOIL-MOISTURE BALANCE CLIMATE RESOLUTION SATELLITE FLUXES
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS记录号	WOS:000490973700051
来源期刊	WATER RESOURCES RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259535
推荐引用方式 GB/T 7714	Ma, Ning,Szilagyi, Jozsef. The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling[J]. 中国科学院青藏高原研究所,2019,55(8).
APA	Ma, Ning,&Szilagyi, Jozsef.(2019).The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling.WATER RESOURCES RESEARCH,55(8).
MLA	Ma, Ning,et al."The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling".WATER RESOURCES RESEARCH 55.8(2019).