Scientists from more than a dozen nations are preparing to launch the biggest and most complex research expedition ever attempted in the central Arctic, wirereporter writes.
The German icebreaker and research vessel Polarstern at shore in Tromso, Norway, Wednesday Sept. 19, 2019. Scientists from more than a dozen nations are preparing to launch the biggest and most complex research expedition ever attempted in the central Arctic. About 100 researchers will set sail Friday from Tromso, Norway, aboard the German icebreaker Polarstern in an effort to understand how climate change is affecting the Arctic and regions beyond.
“The Arctic is the epicenter of global climate change,” said Markus Rex of Germany’s Alfred Wegener Institute for Polar and Ocean Research, who will lead the expedition. “At the same time the Arctic is the region of the planet where we understand the climate system least.” Stefanie Arndt, a sea ice physicist who will join the mission in mid-February, said the unique advantage of this expedition compared with others is the fact that researchers will be able to observe processes in the Arctic across an entire cycle of seasons.
“For example, how much light the snow reflects back into the atmosphere, how much it absorbs and how much light reaches the upper ocean,” said Arndt. “This has big implications for the ecosystem.” Recent changes in the jet stream — a current of air that circles and insulates the Arctic like a giant thermos — have allowed warm, moist winds from low latitudes to move north. At the same time, chilly blasts of Arctic air — the dreaded polar vortices — have brought deep freeze conditions to the continental U.S. and Europe.
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