Hydrology: Current Research

Jeffrey Welker

Publications

• Research Article
  The Water Isotopic Version of the Land-Surface Model ORCHIDEE: Implementation, Evaluation, Sensitivity to Hydrological Parameters
  Author(s): Camille Risi, Jerome Ogée, Sandrine Bony, Thierry Bariac, Naama Raz-Yaseef, Lisa Wingate, Jeffrey Welker, Alexander Knohl, Cathy Kurz-Besson, Monique Leclerc, Gengsheng Zhang, Nina Buchmann, Jiri Santrucek, Marie Hronkova, Teresa David, Philippe Peylin and Francesca GuglielmoCamille Risi, Jerome Ogée, Sandrine Bony, Thierry Bariac, Naama Raz-Yaseef, Lisa Wingate, Jeffrey Welker, Alexander Knohl, Cathy Kurz-Besson, Monique Leclerc, Gengsheng Zhang, Nina Buchmann, Jiri Santrucek, Marie Hronkova, Teresa David, Philippe Peylin and Francesca Guglielmo
  
  Land-Surface Models (LSMs) exhibit large spread and uncertainties in the way they partition precipitation into surface runoff, drainage, transpiration and bare soil evaporation. To explore to what extent water isotope measurements could help evaluate the simulation of the soil water budget in LSMs, water stable isotopes have been implemented in the ORCHIDEE (ORganizing Carbon and Hydrology In Dynamic EcosystEms: the land-surface model) LSM. This article presents this implementation and the evaluation of simulations both in a stand-alone mode and coupled with an atmospheric general circulation model. ORCHIDEE simulates reasonably well the isotopic composition of soil, stem and leaf water compared to local observations at ten measurement sites. When coupled to LMDZ (Laboratoire de Météorologie Dynamique-Zoom: the atmospheric model), it simulates well the isotopic compositi.. Read More»
  DOI: 10.4172/2157-7587.1000258

  Abstract PDF