Methane and the Global Warming Potential numbers are a text book example of misdirection. There is even an Arctic Methane Emergency Group. A rapid break up of sea ice in the summer months could occur within the next decade. The Independent revealed in 2008 that millions of tons of methane are being emitted each summer in the East Siberian Sea where the sea ice has receded. 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As permafrost melts, methane is released from deeper layers, especially from the sub-seabed permafrost of the East Siberian Sea. For instance, a massive pulse of methane could bring forward by between 15 and 35 years the date when global average temperature exceed the “safe” limit of 2C above pre-industrial levels. The researchers ran the model 10,000 times and came to the average cost of $60tn, mostly borne over this century but also into the next. Sea ice Satellites have recorded a dramatic decline in the extent of the floating sea ice in the Arctic, where the loss has accelerated rapidly in recent years. “Global leaders and the World Economic Forum and International Monetary Fund need to pay much more attention to this invisible time-bomb. The health benefits of sunlight: Can vitamin D help beat covid-19? So little data is available from the Arctic Ocean that no scientists dare say with certainty whether the world is watching the fuse being lit on a marine methane time bomb. Using the same computer models employed by the 2006 Stern Review on the Economics of Climate Change, the researchers found that the effects on the global climate of a relatively sudden release of methane over a period of a decade or so could be catastrophic in terms of drought effects on crops, rising sea levels, coastal flooding and extreme weather. This is an economic time-bomb that at this stage has not been recognised on the global stage,” said Professor Gail Whiteman of Erasmus University in Rotterdam. While it is a long-term natural process, methane release is exacerbated by global warming. You can find our Community Guidelines in full here. THEY look like massive bomb craters. A scientific assessment of the costs associated with the release of Arctic methane into the atmosphere has found that the financial consequences to the world would almost equal the entire global economic output of one year. Published. By Matt McGrath Environment correspondent, BBC News The possibility of an imminent release massive enough to accelerate warming can be ruled out, they say. The “methane time bomb” is the popular shorthand for the idea that the thawing of the Arctic could at any moment trigger the sudden release of massive amounts of the potent greenhouse gas methane, rapidly accelerating the warming of the planet. (Picture credit: AP), Superstorm Sandy, the recent floods in Germany and the extreme heat-waves in France in 2003 and in Moscow in 2010 are all examples of the sort of weather extremes that are predicted to increase in frequency in a warmer world. The Arctic sea floor contains a rich, decayed layer of vegetation from earlier eras when the continental shelf was not underwater. Release of gas trapped for thousands of years beneath frozen permafrost of Arctic is one of the most dangerous 'feedback' consequences of rapid warming, Find your bookmarks in your Independent Premium section, under my profile. Arctic methane leakage an `economic time bomb` Massive leakage of methane from thawing shoreline in the Arctic would devastate the world`s climate and economy, a trio of scientists warned on Wednesday. In a warmer world, scientists expect these dry areas to become drier, making farming impossible and causing the mass migration of people who cannot grow their own food or raise their own livestock. Create a commenting name to join the debate, There are no Independent Premium comments yet - be the first to add your thoughts, There are no comments yet - be the first to add your thoughts. The mean impacts of just this one effect – $60tn – approaches the $70tn value of the world economy in 2012,” said Professor Whiteman, the lead author of the study published in the journal Nature. The Arctic is a ticking time bomb that’s close to going off.” They are talking about methane, melting permafrost releases methane. Author. The early warning signs for us today include Arctic sinkholes that suddenly appear as methane-containing permafrost melts, mile-long sheets of methane bubbles forming in the sea around Siberia, and continuously-increasing methane levels across the … But as soon as the ice is removed it exposes the ocean to intense radiation and the water warms up,” Professor Wadhams said. Published. (Picture credit: EPA ), Permafrost The permanently frozen tundra of the Arctic is melting rapidly. Do the huge craters pockmarking Siberia herald a release of underground methane that could exceed our worst climate change fears? 5. What we hear from the media is how many more times powerful methane is at trapping heat than CO2.

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