synoptReg: An R package for computing a synoptic climate classification and a spatial regionalization of environmental data

Abstract

Spatial knowledge of the climatic or environmental variables associated with the most frequent circulation types is essential with regard to developing strategies to address the risk of avalanches, floods, soil erosion, air pollution or other natural hazards. In order to derive an environmental regionalization, we present an Open Source R package known as synoptReg, which combines the spatialization of environmental variables based on the atmospheric circulation types. The synoptReg package contains a set of functions, which we will employ (1) to perform a PCA-based synoptic classification using an atmospheric variable; (2) to map the spatial distribution of the selected environmental variable based upon the circulation types; (3) to develop a spatial environmental regionalization based on the previous results. We illustrate the usefulness of the package for a case study in the Alps area.