A synthesis of the arctic terrestrial and marine carbon cycles under pressure from a dwindling cryosphere |
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| Authors: | Frans-Jan W. Parmentier Torben R. Christensen Søren Rysgaard Jørgen Bendtsen Ronnie N. Glud Brent Else Jacobus van Huissteden Torsten Sachs Jorien E. Vonk Mikael K. Sejr |
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| Affiliation: | 1.Norwegian Institute of Bioeconomy Research,?s,Norway;2.Department of Physical Geography and Ecosystem Science,Lund University,Lund,Sweden;3.Centre for Earth Observation Science (CEOS), Clayton H. Riddell Faculty of Environment Earth and Resources,University of Manitoba,Winnipeg,Canada;4.Arctic Research Centre,Aarhus University,Aarhus C,Denmark;5.Greenland Institute of Natural Resources,Nuuk,Greenland;6.ClimateLab,Symbion Science Park,Copenhagen O,Denmark;7.Department of Biology, Nordic Center for Earth Evolution,University of Southern Denmark,Odense M,Denmark;8.Department of Geography,University of Calgary,Calgary,Canada;9.Vrije Universiteit, Faculty of Earth and Life Sciences, Department of Earth Sciences, Earth and Climate Cluster,VU University,Amsterdam,The Netherlands;10.GFZ German Research Centre for Geosciences,Potsdam,Germany |
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| Abstract: | ![]()
The current downturn of the arctic cryosphere, such as the strong loss of sea ice, melting of ice sheets and glaciers, and permafrost thaw, affects the marine and terrestrial carbon cycles in numerous interconnected ways. Nonetheless, processes in the ocean and on land have been too often considered in isolation while it has become increasingly clear that the two environments are strongly connected: Sea ice decline is one of the main causes of the rapid warming of the Arctic, and the flow of carbon from rivers into the Arctic Ocean affects marine processes and the air–sea exchange of CO2. This review, therefore, provides an overview of the current state of knowledge of the arctic terrestrial and marine carbon cycle, connections in between, and how this complex system is affected by climate change and a declining cryosphere. Ultimately, better knowledge of biogeochemical processes combined with improved model representations of ocean–land interactions are essential to accurately predict the development of arctic ecosystems and associated climate feedbacks. |
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