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GLERL What's New: 1999
Great Lakes Environmental Research
Laboratory
Distinguished Scientist Seminar Series
Dr. Karl Schneider
Institute for Geography
Ludwigs-Maximilians-Universitat
Munich, Germany
"Coupled Modelling of Water, Nitrogen, and Carbon Fluxes
on the Landscape Scale using Remote Sensing"
Location: Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI 48105-2945
Date: Thursday, August 12th, 1999
Time: 10:00 am
Room: 105 (Main Conference Room)
The presence and state of vegetation strongly determines the fluxes of water, nitrogen and carbon at the land surface. Most hydrological models use a prescribed vegetation parameterization and thereby ignore interactions and feedbacks with the vegetation. Plant growth models on the other hand usually use simple hydrological components and are mostly limited to the field scale and specific plant species. Direct coupling of water and carbon fluxes is usually not considered by these models. Moreover feedback mechanisms between water, carbon and nitrogen fluxes are often ignored.In this talk, a coupled, process oriented evapotranspiration and plant growth model is presented. The process-oriented model directly links plant growth, hydrology and nitrogen fluxes. Through the integrated raster GIS system, spatial patterns of meteorological parameters, plant parameters, nitrogen and water fluxes are modelled on the landscape scale. The model was applied to the Ammer watershed in Upper Bavaria/Germany, 709 km". Model results were compared with ground truth and remote sensing measurements. As can be shown, time series of remote sensing data can be used successfully to determine model parameters (such as the date of cutting of meadows) which otherwise cannot be determine accurately on the landscape scale.
For further information, please contact:
Michael J. McCormick
NOAA Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI 48105-2945
734-741-2277
michael.mccormick@noaa.gov
Last updated: September 19, 2002 mbl