(Photo courtesy Dr. Pablo Clemente-Colon, Chief Scientist National Ice Center.) This volume addresses the rapid decline of Arctic sea ice, placing recent sea ice decline in the context of past observations, climate model simulations and projections, and simple models of the climate sensitivity of sea ice. This corresponds to about the size of the state of North Dakota. Arctic sea ice has been in decline for a while now, but 2020 is turning out to be the second-worst year ever — with implications for the whole planet. August 2008. Arctic sea ice typically reaches its minimum in September, at the end of the summer melt season. Primary production. BBC Weather's Chris Fawkes talks to … Retrouvez Arctic Sea Ice Decline: Projected Changes in Timing and Extent of Sea Ice in the Bering and Chukchi Seas et des millions de livres en stock sur Amazon.fr. Including 2020, the linear rate of decline of July sea ice extent is 7.48 percent per decade, or 70,800 square kilometers (27,300 square miles) per year. 2010). The wintertime extent of Arctic sea ice is amongst the lowest on record according to NASA and the National Snow and Ice Data Centre. October 2, 2011. When highly reflective sea ice is replaced by open water during the ice melting period, there is a substantial solar heat input directly into the ocean, increasing the heat stored in the upper ocean. Achetez et téléchargez ebook Arctic Sea Ice Decline: Observations, Projections, Mechanisms, and Implications (Geophysical Monograph Series Book 180) (English Edition): Boutique Kindle - … Through 2007, the September decline trend is now over 10 percent per decade. The impacts of sea ice decline on specific water column phytoplankton properties, such as community composition and carbon biomass (Neeley et al. Arctic Sea Ice Decline: Projected Changes in Timing and Extent of Sea Ice in the Bering and Chukchi Seas By D.C. Douglas. However, until now, there have been only limited assessments of riverine heat impacts. Arctic river discharge increased over the last several decades, conveying heat and freshwater into the Arctic Ocean and likely affecting regional sea ice and the ocean heat budget. knowledge of the Arctic sea-ice dynamics and decline is based on about 40 y of satellite observation, an interval insufficient to document the full range of its natural variability and to fully assess feedbacks on the global ocean, climate, and ecosystems. As the Arctic sea ice vanishes, it leaves patches of dark water open. The fast decline of Arctic sea ice is a leading indicator of ongoing global climate change and is receiving substantial public and scientific attention. Subscribe to our newsletters Image. Sea ice affects Arctic communities and wildlife such as polar bears and walruses. You might also be interested in . Although sea ice records prior to late 1978 are comparatively sparse, they imply that the recent decline exceeds previous sea ice lows. Shipping routes. The Arctic saw its lowest average October sea ice extent since satellite measurements began in 1979, according to European Copernicus Climate Change Service. At the World Economic Forum this week in Davos, Switzerland, the young climate change activist Greta Thunberg had stern words for the world’s most powerful people. Transit passage. Arctic Sea ice melts in the summer, and more of the sun is being absorbed by the ocean. Template:Main This September, sea ice covering the Arctic Ocean fell to the second-lowest extent in the satellite record, which began in 1979. Animation of Arctic sea ice between 1984 and 2016 showing the rapid decline in perennial sea ice. Noté /5. The fast rate of the sea ice melting is resulting in the oceans absorbing and heating up the Arctic. Chukchi Seas By D.C. 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