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@ARTICLE{Kollet:9457,
      author       = {Kollet, S. and Maxwell, R. M. and Woodward, C. S. and
                      Smith, S. and Vanderborght, J. and Vereecken, H. and Simmer,
                      C.},
      title        = {{P}roof of concept of regional scale hydrologic simulations
                      at hydrologic resolution utilizing massively parallel
                      computer resources},
      journal      = {Water resources research},
      volume       = {46},
      issn         = {0043-1397},
      address      = {Washington, DC},
      publisher    = {AGU},
      reportid     = {PreJuSER-9457},
      pages        = {W04201},
      year         = {2010},
      note         = {The financial support by the SFB/TR 32 "Pattern in
                      Soil-Vegetation-Atmosphere Systems: Monitoring, Modeling,
                      and Data Assimilation" funded by the Deutsche
                      Forschungsgemeinschaft (DFG) is gratefully acknowledged. We
                      would also like to thank the John von Neumann Institute for
                      Computing of the Forschungszentrum Julich and project
                      JICG42, "Inverse Modeling of Terrestrial Systems," for
                      providing the required compute time on JUGENE. Portions of
                      this work were performed under the auspices of the U.S.
                      Department of Energy by Lawrence Livermore National
                      Laboratory under contract DE-AC52-07NA27344. We also would
                      like to thank Praveen Kumar, John Selker, Eric Wood, Dennis
                      Lettenmaier, and one anonymous reviewer for their
                      constructive comments and suggestions that greatly improved
                      the quality of the manuscript.},
      abstract     = {We present the results of a unique, parallel scaling study
                      using a 3-D variably saturated flow problem including land
                      surface processes that ranges from a single processor to a
                      maximum number of 16,384 processors. In the applied finite
                      difference framework and for a fixed problem size per
                      processor, this results in a maximum number of approximately
                      8 x 10(9) grid cells (unknowns). Detailed timing information
                      shows that the applied simulation platform ParFlow exhibits
                      excellent parallel efficiency. This study demonstrates that
                      regional scale hydrologic simulations on the order of 10(3)
                      km(2) are feasible at hydrologic resolution (similar to
                      10(0)-10(1) m laterally, 10(-2)-10(-1) m vertically) with
                      reasonable computation times, which has been previously
                      assumed to be an intractable computational problem.},
      keywords     = {J (WoSType)},
      cin          = {ICG-4 / JARA-ENERGY},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793 / $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Environmental Sciences / Limnology / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000277036700001},
      doi          = {10.1029/2009WR008730},
      url          = {https://juser.fz-juelich.de/record/9457},
}