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The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling
Ma, N (Ma, Ning)1; Szilagyi, J (Szilagyi, Jozsef)2,3,4
Source PublicationWATER RESOURCES RESEARCH
2019
Volume55Issue:8Pages:7246-7274
DOI10.1029/2019WR024867
Abstract

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.

Subject AreaEnvironmental Sciences
WOS IDWOS:000490973700051
Language英语
Indexed BySCI
KeywordLand-surface Water Complementary-relationship Vapor Transport Turbulent Heat Soil-moisture Balance Climate Resolution Satellite Fluxes
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS SubjectEnvironmental Sciences ; Limnology ; Water Resources
Cooperation Status国际
ISSN0043-1397
Department环境变化与地表过程重点实验室
URL查看原文
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9200
Collection图书馆
Corresponding AuthorSzilagyi, J (Szilagyi, Jozsef)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China;
2.Chinese Acad Sci, RCE TEA, Inst Atmospher Phys, Beijing, Peoples R China;
3.Budapest Univ Technol & Econ, Dept Hydraul & Water Resources Engn, Budapest, Hungary;
4.Univ Nebraska Lincoln, Sch Nat Resources, Conservat & Survey Div, Lincoln, NE 68588 USA.
Recommended Citation
GB/T 7714
Ma, N ,Szilagyi, J . The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling[J]. WATER RESOURCES RESEARCH,2019,55(8):7246-7274.
APA Ma, N ,&Szilagyi, J .(2019).The CR of Evaporation: A Calibration-Free Diagnostic and Benchmarking Tool for Large-Scale Terrestrial Evapotranspiration Modeling.WATER RESOURCES RESEARCH,55(8),7246-7274.
MLA Ma, N ,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):7246-7274.
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