The Köppen-Geiger Interactive Map is a browser-based atlas for exploring global climate classification zones from 1901 through 2099. It displays historical Köppen-Geiger climate rasters and future CMIP6 projection scenarios derived from the Beck et al. high-resolution dataset. The map lets visitors compare the 1901-1930, 1931-1960, 1961-1990, and 1991-2020 historical periods with projected 2041-2070 and 2071-2099 climates under SSP1-1.9, SSP1-2.6, SSP2-4.5, SSP3-7.0, SSP4-3.4, SSP4-6.0, and SSP5-8.5 scenarios.
Users can pan and zoom the global map, change the selected period or emissions scenario, toggle climate-zone groups, adjust raster opacity, switch basemaps, and click any point to inspect its climate class and approximate place name. The app is built as a static Vite and TypeScript site using OpenLayers and Cloud Optimized GeoTIFFs, so the published map runs without a backend service. It is intended for students, researchers, planners, and climate-curious readers who need a quick way to see where tropical, dry, temperate, continental, and polar climate zones appear and how those zones may shift under different emissions pathways.
Climate data is based on Beck, McVicar, Vergopolan, Berg, Lutsko, Dufour, Zeng, Jiang, van Dijk, and Miralles, High-resolution Köppen-Geiger maps for 1901-2099 based on constrained CMIP6 projections, Scientific Data 10, 724 (2023). Approximate place names are provided by OpenStreetMap through Nominatim reverse geocoding.