Due to global warming, larger and larger areas of sea ice melt
in the summer and when sea ice freezes over in the winter it is thinner and more reduced. As the Arctic summers are getting warmer we may see an acceleration of global warming, because reduced sea ice in the Arctic will remove less CO2 from the atmosphere, Danish scientists report.”If our results are representative, then sea ice plays a greater role than expected, and we should take this into account
in future global CO2 budgets”, says Dorte Haubjerg Søgaard, PhD Fellow, Nordic Center for Earth Evolution, University of Southern Denmark and the Greenland Institute of Natural Resources, Nuuk.Only recently scientists have realized that sea ice has an impact on the planet’s CO2 balance
“We have long known that the Earth’s oceans are able to absorb huge amounts of CO2. But we also thought that this did not apply to ocean areas covered by ice, because the ice was considered impenetrable. However, this is not true: New research shows that sea ice in the Arctic draws large amounts of CO2 from the atmosphere into the ocean”, says Dorte Haubjerg Søgaard.
Dorte Haubjerg Søgaard has just completed her studies of sea ice in Greenland. The studies show that sea ice may have a major impact on the global carbon cycle, and that chemical processes have a much greater impact on the sea ice’s ability to remove CO2 than biological processes. The research is published as a series of articles in scientific journals.