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@ARTICLE{Keune:825896,
      author       = {Keune, Jessica and Gasper, Fabian and Goergen, Klaus and
                      Hense, Andreas and Shrestha, Prabhakar and Sulis, Mauro and
                      Kollet, Stefan},
      title        = {{S}tudying the influence of groundwater representations on
                      land surface-atmosphere feedbacks during the {E}uropean heat
                      wave in 2003},
      journal      = {Journal of geophysical research / Atmospheres},
      volume       = {121},
      number       = {22},
      issn         = {2169-897X},
      address      = {Hoboken, NJ},
      publisher    = {Wiley},
      reportid     = {FZJ-2017-00175},
      pages        = {13,301 - 13,325},
      year         = {2016},
      abstract     = {The impact of 3D groundwater dynamics as part of the
                      hydrologic cycle is rarely considered in regional climate
                      simulation experiments. However, there exists a spatial and
                      temporal connection between groundwater and soil moisture
                      near the land surface, which can influence the land
                      surface-atmosphere feedbacks during heat waves. This study
                      assesses the sensitivity of bedrock-to-atmosphere
                      simulations to groundwater representations at the
                      continental scale during the European heat wave 2003 using
                      an integrated fully coupled soil-vegetation-atmosphere
                      model. The analysis is based on the comparison of two
                      groundwater configurations: (1) 3D physics-based variably
                      saturated groundwater dynamics and (2) a 1D free drainage
                      (FD) approach. Furthermore, two different subsurface
                      hydrofacies distributions (HFD) account for the uncertainty
                      of the subsurface hydraulic characteristics, and ensemble
                      simulations address the uncertainty arising from different
                      surface-subsurface initial conditions. The results show that
                      the groundwater representation significantly impacts land
                      surface-atmosphere processes. Differences between the two
                      groundwater configurations follow subsurface patterns, and
                      the largest differences are observed for shallow water table
                      depths. While the physics-based setup is less sensitive to
                      the HFD, the parameterized FD simulations are highly
                      sensitive to the hydraulic characteristics of the
                      subsurface. An analysis of variance shows that both, the
                      groundwater configuration and the HFD, induce variability
                      across all compartments with decreasing impact from the
                      subsurface to the atmosphere, while the initial condition
                      has only a minor impact.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000390607900007},
      doi          = {10.1002/2016JD025426},
      url          = {https://juser.fz-juelich.de/record/825896},
}