Site files contain monthly climate and scenario data in column format. This time-sequential format was developed to facilitate the extraction of data for individual stations. README files included under the /siteFiles directory give instructions on how to find a particular grid cell. Site files omit background grid cells, with a new line for each grid cell (3261 data records). Each file lists 12 monthly values (January-December) as a single record. A record also contains geographic information about the associated grid point such as latitude, longitude, elevation, state identification number, and Kuchler and VEMAP vveg.v2 vegetation types.
A complete user's guide to the VEMAP Phase 1 database, which includes more information about this data set, can be found at http://daac.ornl.gov/daacdata/vemap-1/comp/Phase_1_User_Guide.pdf
The ORNL DAAC maintains additional information associated with the VEMAP Project.
Cite this data set as follows (data citation revised on December 18, 2002):
Kittel, T. G. F., N. A. Rosenbloom, T. H. Painter, D. S. Schimel, H. H. Fisher, A. Grimsdell, VEMAP Participants, C. Daly, and E. R. Hunt, Jr. 1998. VEMAP 1: U.S. Site Files. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/226.
Kittel, T. G. F., N. A. Rosenbloom, T. H. Painter, D. S. Schimel, and VEMAP Modeling Participants. 1995. The VEMAP integrated database for modeling United States ecosystem/vegetation sensitivity to climate change. Journal of Biogeography 22:857-862.