GLOWA-Elbe

Impacts of Global Change on the Water Cycle in the Elbe Region - Risks and Options

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River Elbe
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German
GLOWA-Elbe Book 2008 (english) GLOWA-Elbe Book 2005 (german)

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SWIM
Soil and Water Integrated Model

Model Description:
SWIM integrates the relevant eco-hydrological processes including	Model structure
water flow, nutrient transport and turn-over, vegetation (crop)	Developer
growth and land use and water management needed to investigate	References
climate and land use change impacts on hydrological systems and	Role within GLOWA-Elbe
vegetation at the regional scale. It was developed to investigate	Model results
impacts of land use and climate changes on hydrology and
vegetation (crop yields).

Input Data:Topography, land use, soil distribution and soil parameters, surface waters and river network, climatic and precipitation stations, water and land use management data, measured discharge data and measured values of nutrient concentrations (for calibration and validation)

Results: Vertical and lateral water flows, plant biomass and crop yields, nitrogen- and phosphorus concentrations, sediment transport at daily, monthly or annual time steps and as GIS layers.

Resolution: Temporal simulation step: 1 day / Spatial resolution: Hydrotopes, whereby each unique combination of the underlying geographical maps (soils, landuse, etc.) forms one hydrotope class. Lateral flows are aggregated at the subbasin scale.

Operating system: Unix, Linux and Windows platforms

Programming language: Fortran

Model run time: 2.5 hours for 10 years for the whole Elbe river basin (ca. 45.000 hydrotopes), stochastic investigations can be accelerated by parallel-computing.

Coordination