New Germany dataset | ClimateImpactsOnline

New Germany dataset

Since November 2026, ClimateImpactsOnline shows the same dataset for Germany in the desktop version as in the mobile version. It was produced in 2025:

  • observations of the German Weather Service 1961-2020 (about 220 climate and 1,200 precipitation stations), interpolated onto a finer grid
  • regional climate scenarios (EURO-CORDEX): 17 model runs for RCP8.5, 7 for RCP2.6, with in-house bias correction
  • historical simulations from 1971 that can be compared with the observations
  • water: the hydrological model SWIM driven by global CMIP6 climate models (SSP1-2.6, SSP3-7.0, SSP5-8.5); agriculture: the ABSOLUT yield models

Compared with the 2019 dataset (scenarios of the Impact2C project, observations 1901-2010), the ensemble is much larger, the scenario RCP4.5 is no longer included, and changes refer to 1991-2020 instead of 1981-2010. At the end of the century (RCP8.5), the annual mean temperature reaches about 12.5 °C in both datasets; the new dataset shows more hot days (median 26 instead of 21) and summers that hardly become drier in the median but considerably wetter winters, whereas the 2019 dataset showed drier summers. Some indicators are defined differently or no longer included. Details are given in the tool under Data Basis → Data Update.

The 2019 dataset remains available for comparison until the end of 2027.

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