1. Department of Meteorology; Eötvös Loránd University; Budapest Hungary
2. Institute of Ecology and Botany; Centre for Ecological Research; Hungarian Academy of Sciences; Vácrátót Hungary
3. National Forest Centre - Forest Research Institute; Zvolen Slovakia
4. Faculty of Forestry and Wood Sciences; Czech University of Life Sciences; Prague Czech Republic
5. Department of Applied Analysis and Computational Mathematics; Eötvös Loránd University; Budapest Hungary