PRISM Group is the offices at Oregon State University responsible for the development and operations of the PRISM model. For more information please visit http://prism.nacse.org/about_us.phtml.
Our PRISM Climate Mapping Program is an ongoing effort to produce and disseminate the most detailed, highest-quality spatial climate datasets currently available. These digital climate maps are created using PRISM (Parameter-elevation Regressions on Independent Slopes Model) an analytical tool that uses point data, a digital elevation model, and other spatial data sets to generate gridded estimates of monthly, yearly, and event-based climatic parameters, such as precipitation, temperature, and dew point. PRISM is uniquely designed and constantly updated to map climate in the most difficult situations, including high mountains, rain shadows, temperature inversions, coastal regions, and other complex climatic regimes.
PRISM derived data sets have been and are being used in applications of climatology, hydrology, natural resources, global climate change, land use, planning, relocation, education, and geography. PRISM climate mapping projects are being conducted in the United States, Canada, China, Mongolia, Europe, Pacific Islands, and elsewhere.
The program is a collaboration between the PRISM Group, directed by Christopher Daly, Professor of Geosciences, and the Northwest Alliance for Computational Science and Engineering (NACSE), directed by Cherri Pancake, Professor of Electrical Engineering and Computer Science. The PRISM Group is located within the NACSE office complex in the Kelley Engineering Center on the Oregon State University campus in Corvallis.
Q: Who is Climate Source?
Please direct additional questions not addressed in the FAQs to individuals listed at http://prism.nacse.org/contacts.phtml.
Digital Data Questions:
For help downloading digital data from our website, please read our "Instructions for Downloading BINARY Data" guide.
For help importing an ASCII grid file into Arcview GIS, please read our "Instructions for importing an ASCII grid file into Arcview GIS using ArcToolbox or Spatial Analyst" guide.
A specific dataset description for each downloadable dataset is contained in "readme" and "metadata" files. Links to these files are available on the webpage where the corresponding data is downloaded.
Q: What are the grid dimensions, projection, resolution, units and formats of the data I downloaded? Specific grid information for each downloadable dataset is contained in a "metadata" file. The link to this file is available on the webpage where the corresponding data is downloaded. Look for a link to "raster metadata" or "vector metadata".
Digital, colorized images of most datasets are available on the webpage where the corresponding data is downloaded. Look for a link to "color shaded annual map".
Average Temperature has not been calculated as it is a simple formula and easy to do yourself:
Average Temperature = (Maximum Temperature + Minimum Temperature) / 2
Map Questions: Digital images and/or hardcopy maps
For permission to reuse images, please contact the PRISM Group by email at or by phone at 541-737-2531.
Hardcopy maps are no longer available.