The Nordic Seas experience influxes of warm water and losses of heat to the atmosphere with knock-on effects on sea ice, glacier retreat, and carbon dioxide uptake.
The relative abundance of different oxidation states for this important micronutrient varies on the basis of how much available sunlight there is.
Arctic warming may release less carbon dioxide from high latitude lakes but increase their climate impact by releasing more methane.
Permafrost thaw is a major threat to pipelines in the Russian Arctic, particularly those carrying natural gas.
The successful deployment of a seafloor seismometer near the calving front of a Greenland glacier has opened a new avenue to study hidden glacial processes and the behavior of fjord-dwelling wildlife.
A new analysis suggests that models do not accurately capture how fresh Arctic surface waters mix with deeper waters, contributing to underestimation of Arctic surface freshening.
Ancient plant and animal DNA buried in Arctic sediments preserve a 50,000-year history of Arctic ecosystems, suggesting that climate change contributed to mammoth extinction.
Improvements in our ability to forecast oceanic conditions weeks to months in advance will help communities, industries, and other groups prepare amid a changing climate.
The forecasting tool IceNet promises to be a useful tool for evaluating sea ice loss in the Arctic. But ethical and logistic considerations have to be taken before scientific and Indigenous communities start working together.
If climate change throws off the seasonal freeze-thaw cycle of Arctic sea ice, it could trigger a reinforcing cycle of sea ice melt in parts of the Canadian Arctic.