Jahn
Alexandra Jahn speaks with KUNC's Erin O'Toole about her recent research to predict when the first ice-free day on the Arctic Ocean might occur. Jahn and her collaborator found that day could happen within the next 20 years – and possibly in as few as three years. An ice-free Arctic could significantly impact the ecosystem and Earth’s climate.
Alexandra Jahn and Céline Heuzé (University of Gothenburg) use computer models to show how a series of extreme weather events could lead to the Arctic’s first ice-free day within just a few years. An ice-free Arctic could significantly impact the ecosystem and Earth’s climate by changing weather patterns.
This fall, sea ice extent was second smallest in Antarctica and fourth smallest in the Arctic. Moreover, sea ice volume was very low in the Arctic. Alexandra Jahn notes that human-caused emissions “are required to get an Arctic sea ice loss as large as observed”.
The U.S. National Science Foundation champions research on how plastic impacts the planet. In this article, they highlight five projects that are changing how researchers think about plastic and what happens after it is tossed away. One of these projects is a study led by Alexandra Jahn about how sea ice moves microplastics in polar regions. Working with her are colleagues from NCAR, U Washington, and WHOI.
The Arctic could see summer days with practically no sea ice as early as the next couple of years, according to a new study led by Alexandra Jahn. The findings suggest that the first ice-free day in the Arctic could occur over 10 years earlier than previous projections.
New CU Boulder research by Patricia DeRepentigny, Alexandra Jahn, and others finds that the presence of clouds—or lack thereof—caused by the smoke of wildfires thousands of miles away can either help protect or endanger Arctic sea ice.
A new study, led by Alexandra Jahn, shows increased precipitation and ice melt caused by climate change have left Arctic waters less salty. Repercussions will be felt much farther south.
New, first-of-its-kind research from Rory Laiho and Alex Jahn shows that climate change is driving increasing amounts of freshwater in the Arctic Ocean, which will lead to increased freshwater moving into the North Atlantic Ocean, which could disrupt ocean currents and affect temperatures in northern Europe.