1. Department of Physical Geography and Ecosystem Science; Lund University; Lund Sweden
2. School of Forest Sciences; University of Eastern Finland; Joensuu Finland
3. Institute for Atmospheric and Earth System Research/Physics, Faculty of Science; University of Helsinki; Helsinki Finland
4. Environmental Soil Science, Department of Agricultural Sciences, Faculty of Agriculture and Forestry; University of Helsinki; Helsinki Finland
5. Finnish Meteorological Institute; Helsinki Finland
6. Institute for Atmospheric and Earth System Research/Forest Sciences, Faculty of Agriculture and Forestry; University of Helsinki; Helsinki Finland