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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 21, issue 9
Hydrol. Earth Syst. Sci., 21, 4629–4648, 2017
https://doi.org/10.5194/hess-21-4629-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Hydrol. Earth Syst. Sci., 21, 4629–4648, 2017
https://doi.org/10.5194/hess-21-4629-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Technical note 14 Sep 2017

Technical note | 14 Sep 2017

Technical note: A hydrological routing scheme for the Ecosystem Demography model (ED2+R) tested in the Tapajós River basin in the Brazilian Amazon

Fabio F. Pereira1,a, Fabio Farinosi1,2,d, Mauricio E. Arias1,3, Eunjee Lee1,b,c, John Briscoe1,†, and Paul R. Moorcroft1 Fabio F. Pereira et al.
  • 1Sustainability Science Program, Kennedy School of Government, Harvard University, Cambridge, MA 02138, USA
  • 2Ca' Foscari University of Venice, Venice, Italy
  • 3Department of Civil and Environmental Engineering, University of South Florida, Tampa, FL 33620, USA
  • anow at: Department of Renewable Energy Engineering, Federal University of Alagoas, Maceió, AL, Brazil
  • bnow at: Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD 21046, USA
  • ccurrent address: Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD 22071, USA
  • dnow at: European Commission, DG Joint Research Centre, Ispra, Italy
  • deceased, 12 November 2014

Abstract. Land surface models are excellent tools for studying how climate change and land use affect surface hydrology. However, in order to assess the impacts of Earth processes on river flows, simulated changes in runoff need to be routed through the landscape. In this technical note, we describe the integration of the Ecosystem Demography (ED2) model with a hydrological routing scheme. The purpose of the study was to create a tool capable of incorporating to hydrological predictions the terrestrial ecosystem responses to climate, carbon dioxide, and land-use change, as simulated with terrestrial biosphere models. The resulting ED2+R model calculates the lateral routing of surface and subsurface runoff resulting from the terrestrial biosphere models' vertical water balance in order to determine spatiotemporal patterns of river flows within the simulated region. We evaluated the ED2+R model in the Tapajós, a 476 674 km2 river basin in the southeastern Amazon, Brazil. The results showed that the integration of ED2 with the lateral routing scheme results in an adequate representation (Nash–Sutcliffe efficiency up to 0.76, Kling–Gupta efficiency up to 0.86, Pearson's R up to 0.88, and volume ratio up to 1.06) of daily to decadal river flow dynamics in the Tapajós. These results are a consistent step forward with respect to the no river representation common among terrestrial biosphere models, such as the initial version of ED2.

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ED2 is a terrestrial biosphere model (TBM) suited for investigating combined impacts of changes in climate, atmospheric CO2, and land cover on the water cycle. In this study, we describe the integration of ED2 with a hydrological routing scheme. The resulting ED2+R model calculates the lateral propagation of surface and subsurface runoff resulting from the TBM and determines spatiotemporal patterns of river flows. We successfully evaluated the ED2+R model in the Tapajós, Brazilian Amazon.
ED2 is a terrestrial biosphere model (TBM) suited for investigating combined impacts of changes...
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