NOAA/NCDC CLIMAPS

National Climatic Data Center’s Climate Maps of the United States database offers polygon data for many popular climate variables.  We would like to use this data for preliminary visualizations on bridge decay research — the primary benefit to this data being its simplicity (it’s already averaged by day/year over a 40 year period), national continuity,…

When defining projection from ArcCatalog (shapefile properties) I get an error message “Failed to Alter the Spatial Reference”. If I try to do this from the “Define Projection” geoprocessing tool (ArcToolbox) I get this error insted: “Cannot create a projection file for filepath Failed to execute (DefineProjection). I solved this problem by accesing the shapefile…