David N. Thomas

David N. Thomas is a Professor of Arctic Ecosystem Research and Director of the International Masters Programme for Environmental Change and Global Sustainability at the University of Helsinki. He is affiliated with the Faculty of Biological and Environmental Sciences, working within the Ecosystems and Environment Research Programme and the Helsinki Institute of Sustainability Science.

Dr. Thomas is a distinguished Marine-Arctic-Antarctic-Climate Biologist with extensive expertise in sea ice research, polar ecosystems, and climate change impacts. His research focuses on the biogeochemical processes within sea ice, carbon cycling in polar regions, and the ecological implications of a changing Arctic Ocean. He has made significant contributions to understanding how sea ice ecosystems function and respond to environmental change, with particular attention to microbial communities, nutrient dynamics, and carbon fluxes.

His recent publications demonstrate a strong focus on the changing Arctic Ocean ecosystem, carbon and microbial dynamics in thawing permafrost landscapes, and sea ice biogeochemistry. Dr. Thomas has also contributed to important policy documents such as the PAME Synthesis Report on Ecosystem Status in the Central Arctic Ocean, bridging the gap between scientific research and environmental management.

Professor Thomas has recently published the 4th Edition of "Sea Ice: Its Physics, Chemistry, Biology, Geology and Societal Importance," which represents a comprehensive update to this seminal work in polar science. His research spans both Arctic and Antarctic environments, examining how these critical polar regions are responding to global environmental change.