Codes for the climatic stratification of the environment in the Union, as specified in Metzger, M.J., Shkaruba, A.D., Jongman, R.H.G. & Bunce, R.G.H., Descriptions of the European Environmental Zones and Strata. Alterra, Wageningen, 2012.
Based on environmental variables (climate, geomorphology, oceanicity and northing) using a Principal component analysis and ISODATA clustering routine. The Environmental Stratification of Europe (EnS) consists of 84 Strata, which have been aggregated to 13 Environmental Zones with a spatial resolution of 1 km^2.
NOTE This stratification is after Metzger et al. 2005.