Showing posts with label Arctic. Show all posts
Showing posts with label Arctic. Show all posts

Monday, 26 March 2012

Global Warming threshold for Greenland Ice Sheet collapse reduced to 1.6 degrees C


New research from the Potsdam Institute for Climate Impact Research and Universidad Complutense de Madrid has lowered the best estimate for the irreversible collapse of the Greenland Ice Sheet down to 1.6 °C, making the ice sheet more vulnerable than previously thought to global warming. The previous best estimate was 3.1 °C. As we currently have 0.8 °C of global warming, by the middle of the

Wednesday, 7 March 2012

Sea ice volume: Multi-year arctic sea ice reducing dramatically


A new study has noted a substantial decadal decline in the Arctic Multiyear ice cover. While ice extent has been shrinking, much of this is seasonal ice that reforms each winter and can grow with variable weather factors such as changes in temperature, wind, weather and ocean currents. A reduction in the thicker multiyear ice indicates a much greater impact and collapse of sea ice is evident.

Tuesday, 31 January 2012

Climate change increasing Canada's boreal forest mortality reducing carbon sink capacity

Climate change induced drought and water stress is increasing tree mortality in Canada's boreal forests, particularly in western Canada, resulting in a reduction in biomass which reduces it's capacity as a carbon sink. As tree mortality increases, there is reduced capacity to absorb carbon dioxide, resulting in a feedback loop where conditions become warmer and drier increasing the stress on the