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earth environment and resources News Archive

Arctic shrub Betula nana Northern Alaska; Photo: Agata Buchwal

Clayton H. Riddell Faculty of Environment, Earth, and Resources

Declining Arctic sea ice drives divergent arctic shrub growth

December 15, 2020 — 
Arctic sea ice has been in steep decline over the last two decades. Meanwhile, tundra shrub abundance has been increasing in many regions of the Arctic.

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Optical measurement of a melt pond; Photo: Pierre Coupel

Clayton H. Riddell Faculty of Environment, Earth, and Resources

Synthesis study demonstrates phytoplankton can bloom below Arctic sea ice

November 19, 2020 — 
Until roughly a decade ago, most scientists assumed that phytoplankton remained in a sort of stasis throughout the winter and spring until sea ice break-up. Now there is a growing body of evidence that suggests under-ice blooms (UIBs) of phytoplankton can occur in low-light environments below sea ice.

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Dr. Norm Halden

Clayton H. Riddell Faculty of Environment, Earth, and Resources

After 12 impressive years, Dr. Norm Halden retires as Dean of the Clayton H. Riddell Faculty of Environment, Earth, and Resources

August 20, 2020 — 
On June 30, 2020 the Clayton H. Riddell Faculty of Environment, Earth, and Resources said farewell to Dean Dr. Norm Halden.

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Photo: Dirk Notz

Clayton H. Riddell Faculty of Environment, Earth, and Resources

North pole soon to be ice free in summer

April 22, 2020 — 
Using these models, the researchers considered the future evolution of Arctic sea-ice cover in a scenario with high future CO2 emissions and little climate protection. As expected, Arctic sea ice disappeared quickly in summer in these simulations.

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