Erschienen in:European Geosciences Union General Assembly 2017, Vienna, Austria, 2017-04-27 - 2017-04-27
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Englisch
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Potential impacts of human water management on the European heatwave 2003 using fully integrated bedrock-to-atmosphere simulationsJessica Keune (1,2,3), Mauro Sulis (2), Stefan Kollet (1,3), Yoshihide Wada (4,5,6)(1) Institute for Bio- and Geosciences, Agrosphere (IBG-3), Research Centre Jülich, Jülich, Germany (jkeune@uni-bonn.de),(2) University Bonn, Meteorological Institute, Bonn, Germany, (3) Centre for High-Performance Scientific Computing inTerrestrial Systems, Geoverbund ABC/J, Jülich, Germany, (4) International Institute for Applied Systems Analysis,Laxenburg, Austria, (5) Department of Physical Geography, Utrecht University, Utrecht, The Netherlands, (6) NASA GoddardInstitute for Space Studies, NY, USARecent studies indicate that anthropogenic impacts on the terrestrial water cycle lead to a redistribution of waterresources in space and time, can trigger land-atmosphere feedbacks, such as the soil moisture-precipitationfeedback, and potentially enhance convection and precipitation. Yet, these studies do not consider the fullhydrologic cycle from the bedrock to the atmosphere or apply simplified hydrologic models, neglecting theconnection of irrigation to water withdrawal and groundwater depletion. Thus, there is a need to incorporate waterresource management in 3D hydrologic models coupled to earth system models.This study addresses the impact of water resource management, i.e. irrigation and groundwater abstraction, onland-atmosphere feedbacks through the terrestrial hydrologic cycle in a physics-based soil-vegetation-atmospheresystem simulating 3D groundwater dynamics at the continental scale. The integrated Terrestrial Systems ModelingPlatform, TerrSysMP, consisting of the three-dimensional subsurface and overland flow model ParFlow, theCommunity Land Model CLM3.5 and the numerical weather prediction model COSMO of the German WeatherService, is set up over the European CORDEX domain in 0.11resolution. The model closes the terrestrial waterand energy cycles from aquifers into the atmosphere. ...