Sea ice born in the shallow seas off Russia rarely makes it out of its nursery before succumbing to melt. New research finds that two decades ago, half of the sea ice formed near the Arctic coast of Russia went on a windblown journey through the Arctic Ocean and out via the Fram Strait between Greenland and Svalbard before melting. Today, only about 20 percent of the ice born near Russia makes that journey. That's a big problem, said study leader Thomas Krumpen, an ocean ice physicist at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research in Germany. Sea ice formed in shallow waters traps a lot of small particles, everything from sediments to algae to microplastic pollution to iron and other nutrients. When the ice melts in place rather than traveling, it affects the distribution of those substances. "How will this change in transport affect the biogeochemical cycle in the Arctic Ocean as well as the ecosystem?" Krumpen said. "This is all poorly … [Read more...] about Most of the Arctic’s ‘Baby Sea Ice’ Melts Before It Leaves the Nursery. And That’s a Problem.
Whether you observe from the sea or from the air, there's less Antarctica to see every year — less ice on the land-bound ice cap and glaciers and more ice breaking up and flowing off onto the oceans. Captain Oliver Kruess pilots his cruise ship — the National Geographic Explorer — through the flows. Antarctic adventure tourism has become big business. But he says something happens to the people who come down here."Initially, many of them come for the seals, for the penguins, for the whales," Kruess told CBS News senior foreign correspondent Mark Phillips in a report for "Down to Earth" by CBS News on Facebook Watch. "But when they return to Antarctica, they come for the ice — the shape of the icebergs, the sea-ice set up, the ship in the ice." "So much of the earth's fresh water is sequestered here in Antarctica in that huge ice mass that's frozen there," NASA scientist John Sonntag said. "A good way to think of both Greenland and … [Read more...] about Scientists warn of “inevitable sea level rise” as Antarctica ice melts
Associated Press Published 7:43 AM EDT Mar 15, 2019 Lansing – State officials say small numbers of dead fish may be common sights in Michigan waters as winter’s snow and ice melt. Gary Whelan of the Department of Natural Resources says very cold temperatures and heavy snow can kill fish and other aquatic animals such as turtles, frogs, toads and crayfish. Shallow lakes with lots of vegetation are especially prone to winter kill. Aquatic plants covered by ice and snow die from lack of sunlight and use up dissolved oxygen as they decay, which can cause fish to suffocate. Canals in urban areas also susceptible because of runoff and pollution from roads, lawns and septic systems. Whelan says the fish kills typically happen late in winter but can go unnoticed until the water warms and fish rise to the surface. … [Read more...] about Winter fish kills may become noticeable as snow, ice melt
CLIMATE change has forced the melting of Greenland's mile-thick ice sheet into 'overdrive', threatening to boost global sea levels to dangerous levels. The enormous sheet, which covers an area two and a half times that of the United Kingdom, is dumping more melted ice into the oceans than at any point during the past 400 years, according to a new study. Rising sea levels pose a host of catastrophic risks to the planet, and the new study serves as a stark warning that without action against climate change, humanity is headed for a future 'where food shortages, floods and fires are part of our everyday reality', scientists warned. They added that Greenland's dramatic melting was directly linked to the greenhouse gases belched into Earth's atmosphere since the beginning of the industrial revolution. "From a historical perspective, today's melt rates are off the charts, and this study provides the evidence to prove it" said Sarah Das, a glaciologist at Woods Hole Oceanographic … [Read more...] about Climate change in ‘OVERDRIVE’ as experts warn Greenland ice melt now ‘off the charts’
Dan Joling, Associated Press Updated 9:28 am CDT, Saturday, October 13, 2018 This photo provided by the United States Geological Survey shows a female Pacific walrus resting, Sept. 19, 2013 in Point Lay, Alaska. A lawsuit making its way through federal court in Alaska will decide whether Pacific walruses should be listed as a threatened species, giving them additional protections. Walruses use sea ice for giving birth, nursing and resting between dives for food but the amount of ice over several decades has steadily declined due to climate warming. (Ryan Kingsbery/U.S. Geological Survey via AP) less This photo provided by the United States Geological Survey shows a female Pacific walrus resting, Sept. 19, 2013 in Point Lay, Alaska. A lawsuit making its way through federal court in Alaska will decide ... more Photo: Ryan Kingsbery, AP This July 15, 2012, photo provided by the U.S. Geological Survey shows … [Read more...] about As sea ice melts, agency says harm to walruses not proven