Dr Paul Balcombe of Imperial College London told E&T that almost half of global methane emissions originate from natural sources. Property News: Sustainable House Day 2020: The most inspiring homes to see this year - domain.com.au. Someone commented they were likely in error. Sign up to the E&T News e-mail to get great stories like this delivered to your inbox every day. Latest data released by a US institution, the NOAA Earth System Research Laboratory (ESRL), sounds afresh alarm bells for the Artic and climate change. Expedition head Professor Igor Semiletov said all areas of methane discharge had increased – and that new sea bottom craters in the Laprev Sea had been found. The initial Tweet by Randall Gates at the weekend, "a science advocate and communicator", reached nearly 10,000 likes and retweets. It adds further evidence corroborating an earlier hypothesis that predicts a catastrophic release of methane in the coming decades due to thawing Arctic permafrost. "This increase is very bad news for climate change as methane is such a strong climate forcer. Balcombe adds that there is no consensus on the specific cause of this increase in concentration. Methane discharges are cracking open the permafrost in the Arctic, a scientific expedition has revealed. In 2013, a group of economists and polar scientists claimed that methane released by thinning permafrost could cause catastrophic climate change and cost the world $60tn. Despite the worrying development spotted for the Borrow site, the latest data points (in red) are still mere preliminary observations and will require further treatment to validate them - notably undergoing rigorous quality assurance (grey dots) - according to the ESRL website. ... A rise in methane and carbon dioxide levels in the atmosphere in the 20 th and 21 … A rise in methane and carbon dioxide levels in the atmosphere in the 20, centuries has been named a central cause for. Emissions come from both natural sources, such as wetlands and man-made - for example agriculture and oil and gas". Scientists found the potent greenhouse gas bubbling from a depth of 350 meters in the Laptev Sea, with surface-level concentrations that vent into the atmosphere between four and eight times … Earlier this summer I began noting the troublesome spike in atmospheric methane readings from Barrow AK. Balcombe says he has witnessed a pretty consistent trend over the last ten years showing increased methane concentrations in the air. Balcombe says he has witnessed a pretty consistent trend over the last ten years showing increased methane concentrations in the air. "It is easy to know how much methane is in the atmosphere, but it is very difficult to work out what the source is," he said. The expedition said that at this point, the increased methane emission had not contributed to an increase in global atmospheric methane levels. Increasing levels of methane in the Arctic region concern experts because it is one of the most potent greenhouse gases in Earth's atmosphere. E&T was contacted over concern for using 2019 data for the Barrow Atmospheric Baseline Observatory site. Some point the finger at natural gas production, shale gas in particular, whilst others have suggested it comes from biogenic sources. "Whilst we have a quite accurate understanding of total global emissions, allocating this to specific sources is a bit more uncertain. "This increase is very bad news for climate change as methane is such a strong climate forcer. Methane traps heat much more effectively than carbon dioxide. pic.twitter.com/7fqw0U7Ft1. The problem is to accurately pinpoint the sources of methane. It is also possible that the atmosphere's ability to scrub methane from the air - via chemical reactions - is reducing and could be contributing to the increase. In August, methane levels above 2040 nmol mol-1 (ppb) were spotted by the Barrow Atmospheric Baseline Observatory, located eight kilometres east of the city of Utqiaġvik (formerly called Barrow) in Alaska. The water is usually tough to get through due to it being "covered in ice," but Semiletov said this year was different. Methane emissions are only around 3 per cent of those from carbon dioxide, on a kg basis, but are responsible for approximately a quarter of today's anthropogenic warming", he told E&T. The sudden jump sent waves of uneasiness through social networks. Methane discharges in the Arctic are rising, it has been warned. This finding contradicted other scenarios under which a warming Arctic would enable exploitation of new sources of oil and gas, as well as opening up new polar shipping routes that would contribute to an increase regional trade.
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