To welcome the distinguished Professor Emeritus in Geophysics Matti Leppäranta, the International Research Center of Big Data for Sustainable Development Goals (CBAS) will host a one-day seminar focusing on discussions of “Geophysics of the Cryosphere”. It will foster cross-disciplinary perspectives on the ocean-atmosphere-land system, bridging process studies with operational needs. We warmly invite friends and colleagues to join this seminar.