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Jan Wyllie

Shock as retreat of Arctic sea ice releases deadly greenhouse gas - Climate Change - En... - 0 views

  • Dramatic and unprecedented plumes of methane – a greenhouse gas 20 times more potent than carbon dioxide – have been seen bubbling to the surface of the Arctic Ocean by scientists undertaking an extensive survey of the region.
  • The scale and volume of the methane release has astonished the head of the Russian research team
  • never before witnessed the scale and force of the methane being released from beneath the Arctic seabed.
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  • This is the first time that we've found continuous, powerful and impressive seeping structures, more than 1,000 metres in diameter. It's amazing," Dr Semiletov said. "I was most impressed by the sheer scale and high density of the plumes. Over a relatively small area we found more than 100, but over a wider area there should be thousands of them."
  • Some plumes were a kilometre or more wide and the emissions went directly into the atmosphere – the concentration was a hundred times higher than normal."
Jan Wyllie

Methane's Contribution to Global Warming Is Worse than You Thought | Alternet - 0 views

  • Methane is 21 times more heat-trapping that carbon dioxide.
  • Actually, any CH4 released today is at least 56 times more heat-trapping than a molecule of C02 also released today. And because of the way it reacts in the atmosphere, the number is probably even higher, according to research conducted by  Drew Shindell , a scientist at NASA’s Goddard Space Center.
  • And we appear to be approaching some irrevocable tipping points that will create powerful negative feedback loops, the most worrisome being  the release of methane  stores at the bottom of the ocean and locked into sub-Arctic permafrost.
D'coda Dcoda

Climategate part 2? A worrying conflict of interest [17Jun11] - 0 views

  • a press release for the report which suggested that renewable sources alone, without nuclear power, could provide 77 per cent of the world’s energy supply by 2050.
  • The supporting documents, which weren’t released until over a month later, reveal that this claim was based on a large real-terms decline in worldwide energy consumption over the next 40 years (highly unrealistic as India and China grow their economies).
  • Now it appears that there are more apparent conflicts of interest in the IPCC’s energy report
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  • eter Bosshard, Policy Director of the campaign group International Rivers, contacted me to point out that the scenario for 77 per cent renewables included (against standard practice) large hydropower projects among the technologies to be promoted.
  • Most environmentalists believe that more large scale dams are not the right approach to generating electricity in a sustainable way.
  • While water is a renewable resource, the ecosystems that are destroyed by hydropower projects are not. Not least due to dam building, rivers, lakes and wetlands suffer from a higher rate of species extinction than any other major ecosystem.
  • Not only this but because of the decomposing organic matter found in reservoirs, dams emit greenhouse gases such as methane and CO2. In some cases, it is claimed, these emissions can be higher than those of thermal power projects with the same electricity output.
  • Ivan Lima of Brazil’s National Institute for Space Research  estimate that the total methane emissions from large dams at 104 million tons per year.
  • Methane is a particularly potent greenhouse gas, and Lima’s figure amounts to more than 4 per cent of the total warming impact of human activities – roughly equal to the climate impact of the global aviation sector
  • So why is the IPCC contravening international standard practice to promote hydropower?
  • Well this may be total coincidence but in addition to several independent scientists, the IPCC selected a number of authors to write the section of hydropower who have a vested interest in growing the sector.
  • Of the nine lead authors there are representatives of two of the world’s largest hydropower developers, a hydropower consultancy, and three agencies promoting hydropower at the national level.
  •  
    The UN's Intergovernmental Panel on Climate Change has been compromised again.
Jan Wyllie

Warming Arctic Permafrost Fuels Climate Change Worries - NYTimes.com - 0 views

  • A troubling trend has emerged recently: Wildfires are increasing across much of the north, and early research suggests that extensive burning could lead to a more rapid thaw of permafrost.
  • Thawing has been most notable at the southern margins. Across huge areas, including much of central Alaska, permafrost is hovering just below the freezing point, and is expected to start thawing in earnest as soon as the 2020s.
D'coda Dcoda

Bayou Sinkhole: Radioactive dome issues covered up over a year [09Aug12] - 1 views

  • The possibly failed salt cavern may be closer to the outer wall of the Napoleonville Dome than Texas Brine officials believed.• DNR defended the timing of its disclosures about the history surrounding the salt cavern as matching the emerging facts of the incidents in Bayou Corne.• Sonny Cranch, Texas Brine spokesman, said company officials have been as surprised as anyone about a possible collapse of their salt cavern.• DNR officials allowed Texas Brine to deposit naturally-occurring radioactive material arising from drilling into two company salt caverns, including the one that may have breached in the Bayou Corne area. As of Wednesday, state environmental officials had not tested the sinkhole for radioactivity."
  • Friday evening, the day the sinkhole developed and released a foul diesel odor was the first time DNR officials made public information indicating that the cavern may have failed and caused the sinkhole, a “slurry area.” Tuesday night, DNR and Texas Brine officials explained that the cavern appeared closer to Napoleonville Dome’s edge than thought when the cavern was issued a state permit 1982, and that the cavern wall might have been breached. That failure could allow a connection between the cavern’s brine contents and sediments around the dome.
  • Ball said DNR officials focused on locating a source of the natural gas large enough to send gas bubbling up in the bayous and they focused on area natural gas pipelines and two salt caverns known to be storing natural gas under pressure.
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  • Tuesday, a University of Texas seismologist found environmental modifications (ENMODs), geological disturbances such as earthquakes, correlate with oil and gas company's hydraulic fracturing injection wells, according to research reported in the journal Proceedings of the National Academy of Sciences. Wednesday, due to the escalating swampland disaster, Chevron Corp’s subsidiary Bridgeline Holdings gas energy company halted its nearby pipeline activities and drew down fuel at its nearby storage cavern.
  • A Texas Brine letter dated Aug. 25, 1995, requesting the disposal says the radioactive “scale” had accumulated in soils around the two cavern wells. (Read letter.)EPA says the radioactivity of scale, a common byproduct of oil and gas exploration and production, can vary widely, from background to much higher levels.
  • Government authorized Texas Brine to dispose radioactive material into cavern DNR records show that on Aug. 31, 1995, it authorized Texas Brine to dispose of 20 cubic feet of naturally occurring radioactive material by pumping it into the cavern and another Texas Brine salt cavern in Lafourche Parish. (Read letter.)
  • The Bayou Corne disaster has resulted in a recently declared State of Emergency and the area is under a mandatory evacuation order.
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