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Mapping Monthly Precipitation, Temperature, And Solar Radiation For Ireland With Polynomial Regression And A Digital Elevation Model, Christine L. Goodale, John D. Aber, Scott V. Ollinger
Mapping Monthly Precipitation, Temperature, And Solar Radiation For Ireland With Polynomial Regression And A Digital Elevation Model, Christine L. Goodale, John D. Aber, Scott V. Ollinger
Faculty Publications
A 1 km2 resolution digital elevation model (DEM) of Ireland was constructed and used as the basis for generating digital maps of the climate parameters required to run a model of ecosystem carbon and water cycling. The DEM had mean absolute errors of 30 m or less for most of Ireland. The ecosystem model requires inputs of monthly precipitation, monthly averaged maximum and minimum daily temperature, and monthly averaged daily solar radiation. Long-term (1951 to 1980) averaged monthly data were obtained from sites measuring precipitation (618 sites), temperature (62 sites), and the number of hours of bright sunshine per day …
Comparison Of Presettlement And Present Vegetation Cover Of Marion County, Illinois Using A Geographic Information System, Daniel Unger
Comparison Of Presettlement And Present Vegetation Cover Of Marion County, Illinois Using A Geographic Information System, Daniel Unger
Faculty Presentations
The vegetation types of Marion County, Illinois prior to European settlement, which were derived from soil association surveys, were compared to a satellite map of current vegetation types to quantify their change over time. GIS analysis indicates that 10% of presettlement prairie is currently grassland, 2% of presettlement prairie has been converted to forest, 32% of original prairie has been converted to agriculture and urban use, 17% of presettlement forest remains intact, grassland comprises 18% of presettlement forest while 21% of presettlement forest has been converted to agricultural and urban use.