“Changes will happen decades earlier than previously thought.”
Now where have we heard that before?
“More rain than snow will fall in the Arctic and this transition will occur decades earlier than previously predicted, a new study led by the University of Manitoba (UM) and co-authored by scientists at the National Snow and Ice Data Center (NSIDC) at CU Boulder reports.”
“There are huge ramifications of these changes,” said the lead researcher, “all of which have implications on wildlife populations and human livelihoods.”
“There are huge ramifications of these changes, which we note in the paper, such as a reduction of snow cover, increased permafrost melt, more rain-on-snow events, and greater flooding events from increased river discharge, all of which have implications on wildlife populations and human livelihoods,” says lead researcher Michelle McCrystall, a postdoctoral fellow in UM’s Centre for Earth Observation Science in the Clayton H. Riddell Faculty of Environment, Earth, and Resources.
Rainfall in Arctic Will Soon Be More Common Than Snowfall – Decades Earlier Than Thought
“The Arctic is iconic for maintaining year-round ice and snow, but in the last decade, it has begun to transition to wetlands and open ocean. Emblematic of this change, in July 2020, the last intact ice shelf in the Canadian Arctic fell into the sea. Since first analyzed in 1902, the Milne ice sheet already lost 43 percent of its previous mass. Canada’s Ellesmere Island ice caps were also lost in the summer of 2020, as the ice deposited during the Little Ice Age (1600 to 1850) melted completely. Glacier melt, thawing permafrost and wetland expansion create a new landscape, changing ecosystems as well as altering the global atmosphere and ocean circulation.”
Climate tipping points: The Arctic is a bellwether for irreversible change
“It is fitting that we are meeting here in Arkhangelsk, a historical meeting place between the East and West. I approach the event in this spirit: Promoting a meeting of minds with a firm belief that the Arctic will indeed remain a “Territory of Dialogue,” said President Niinistö during his opening remarks at “The Arctic: Territory of Dialogue” forum in Arkhangelsk in North Russia. “My starting point today is the growing threat of climate change. Tackling this challenge is crucial if we want to ensure that the Arctic remains the place it is today. But the issue is of global significance: If we lose the Arctic, we lose the whole world.” President Niinistö of Finland April 3, 2017
President Niinistö in North Russia: ‘If We Lose the Arctic, We Lose the World’
“Siberian Permafrost Turns Carbon-12 Tap On: Radiocarbon Diminishing in Air – by Albert Kallio Today there are over 27,000 recorded methane craters discovered on the Arctic Ocean’s sea bed and many have diameter of 1 km or wider. The largest methane crater found so far is 750 km² in its area and has lost from its deposit thickness over 300 metres (and all of that is pure carbon-12 that was originally within methane ice, of course).From the post ‘Siberian Permafrost Turns Carbon-12 Tap On: Radiocarbon Diminishing in Air’, at: “Siberian Permafrost Turns Carbon-12 Tap On: Radiocarbon Diminishing in Air