EGU General Assembly 2020
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Temperature and precipitation projections for Poland based on downscaled EuroCORDEX ensemble

Joanna Struzewska1,2, Maciej Jefimow1,2, Paulina Jagiełło1, Maria Kłeczek1, Anahita Sattari1,3, Aneta Gienibor1, Aleksander Norowski1, Pawel Durka1, Barłomiej Walczak1, and Piotr Drzewiecki1
Joanna Struzewska et al.
  • 1Institute of Environmental Protection - National Research Institute
  • 2Warsaw University of Technology, Faculty of Building Services, Hydro and Environmental Engineering, Department of Environmental Protection and Management, Warsaw, Poland (
  • 3Institute of Geophysics - Polish Academy of Sciences

Regional climate projections are necessary to assess possible changes in the exposure and risk to allow planning the adaptation strategies.

Projections of temperature and precipitation trends were developed using a consistent methodology and homogeneous datasets to address the needs of up-to-date climate change scenarios for Poland.

The Euro-Cordex results with the resolution of 0.11deg (about 12.5km) for RCP4.5 and RCP8.5 were downscaled based on various historical gridded datasets (EOBS, ERA5, UERRA and data from IMWM).

Ensemble analysis was undertaken to assess the projection uncertainty and ensemble mean were calculated for base parameters (daily average, minimum, and maximum temperature and daily precipitation sum) as well as for the number of climate indices.

We will present spatial and temporal variability of selected climate indices over Poland for subsequent decades. Increase of the annual average temperature is due to the rise in the number of hot days and the reduction of the number of frost days. All temperature indices are characterized by statistically significant trends, strongest for RCP8.5. The most pronounced changes in the frequency and amount of precipitation occur in the north-east of Poland. The total number of days with precipitation increases slightly. The increase in the annual rainfall is due to the increase in the number of days with extreme precipitation.

Results are presented via an interactive web portal. Further analysis includes the development of projection for solar radiation, wind speed, humidity and snow cover.

How to cite: Struzewska, J., Jefimow, M., Jagiełło, P., Kłeczek, M., Sattari, A., Gienibor, A., Norowski, A., Durka, P., Walczak, B., and Drzewiecki, P.: Temperature and precipitation projections for Poland based on downscaled EuroCORDEX ensemble, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-14899,, 2020

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Presentation version 2 – uploaded on 04 May 2020 , no comments
More description added in the slides with the methodology
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