Urs Ganse¹, Minna Palmroth^1,2, Sebastian von Alfthan³, Markus Batttarbee¹, Thiago Brito¹, Maxime Grandin¹, Andreas Johlander¹, Tuomas Koskela¹, Yann Pfau-Kempf¹, Maxime Dubart¹ and Lucile Turc¹, (1)University of Helsinki, Department of Physics, Helsinki, Finland, (2)Finnish Meteorological Institute, Helsinki, Finland, (3)CSC Centre for Scientific Computing, Espoo, Finland