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reply to post by Rezlooper
Also, I've said it before, how can you be so sure that these methane plumes aren't rising into the stratosphere and the mesosphere when we have no way of testing the air in those levels? There may be much more than trace amounts in those levels and you nor I know for sure.
We investigate the influence that rising concentrations of methane, nitrous oxide and carbon dioxide have had upon the chemistry of the mesosphere since 1961. Calculations were performed using our global 3D-model LIMA (Leibniz-Institute Middle Atmosphere), designed for the investigation of the MLT-region (Mesosphere-Lower Thermosphere) and particularly for the extended mesopause region. LIMA utilizes observed tropospheric and lower stratospheric temperature and horizontal wind data up to 35 km altitude by assimilating ECMWF/ERA-40 and ECMWF operational data. Real Lyman-α flux values are employed to determine the variable water vapor dissociation rate. Three different calculations were carried out and analyzed: (1) use of the same annual variation of the model dynamics in the chemical transport model (CTM) for all years according to the dynamics of the solar minimum year 1964 and employment of a realistic growth of the anthropogenic gases; (2) use of constant concentrations of the anthropogenic constituents at the lower border, but employment of the varying model dynamics; (3) the so-called realistic case, which considers both the long-term increase in the anthropogenic minor constituents and the varying dynamics according to LIMA calculations. The analysis of these three cases shows that the dynamics are able to counteract the impact of anthropogenic growth of minor constituents in the upper mesosphere-mesopause-lower thermosphere region in middle to high latitudes in summer. The water vapor mixing ratio increases due to rising methane concentration. The reason for this lies in a positive feedback process of autocatalytic water vapor production. The change in concentration of the minor constituents impacts both the cooling rate and the chemical heating rate. We present the relative and absolute deviations between the solar activity minimum years 1964 and 2008 for the most important minor constituents. We discuss the long-term behavior, particularly of water vapor, with regard to the impact on the NLC-region.
Of the three factors considered here, methane increases are found to exert the strongest influence on surface ozone.
A sharp increase in methane gas in the atmosphere since 1978 will probably make the earth warmer and may worsen seasonal losses of protective ozone over Antarctica, scientists say. But the 11 percent increase in methane in the last decade may also slow depletion of the ozone shield over the rest of the planet, said F. Sherwood Rowland and Donald R. Blake, chemists at the University of California at Irvine.
The Earth seems to have it all figured out. If we, the ignorant humans do not get in the way, she could rectify any problems herself.
I am referring to the post which I replied to in which you said talked about a "positive side of methane" in the context of how the Earth "could rectify any problems herself".
Which are you referring to?
Mr. Rowland and Mr. Blake also said that because increasing atmospheric methane reduces the amount of hydroxyl present, it may reduce the atmosphere's ability to cleanse itself of pollutants. Hydroxyl reacts with many pollutants and removes them from the atmosphere.
OLYMPIA, Wash.— In its water-quality report to the Environmental Protection Agency, the state of Washington classified the entire Puget Sound as “waters of concern” because of ocean acidification’s threat to local shellfish and fish resources. This means the data show that ocean acidification is threatening the region’s ability to support fish and shellfish. It also makes the area a priority for more monitoring and assessment. “Ocean acidification is putting the whole Puget Sound ecosystem at risk,” said Miyoko Saka#a, oceans director at the Center for Biological Diversity. “Focusing on the entire Sound as a ‘water of concern’ because of ocean acidification is a key step toward monitoring the effects of this sea change and curbing those effects.” The Pacific Northwest is particularly vulnerable to the impacts of ocean acidification. For many of the past six years, the region’s baby oysters have been unable to survive, in part due to acidifying waters. Scientists have documented waters affected by ocean acidification upwelling along the Pacific Coast during certain seasons and exposing marine life to corrosive waters. “The science is in, and it says the Northwest’s stretch of ocean, and all the marine life it supports, is in trouble,” said Saka#a. “Washington may also be a warning beacon for the future of our oceans. But it isn’t enough to simply recognize the problem. We have to act, and that means cutting carbon pollution.
On November 27, Washington State Governor Chris Gregoire and her Blue Ribbon Panel on Ocean Acidification released a detailed report and plan of action to address the present and future impacts of acidification on Washington’s marine environment. The panel was convened by the Governor due in part to the near catastrophic effect that the acidification of local marine environments had on Pacific Northwest oyster hatcheries between 2005 and 2009, where billions of oyster larvae died and hatchery output plummeted.
We carried out checks at about 115 stationary points and discovered methane fields of a fantastic scale – I think on a scale not seen before,” Dr. Semiletov says. “Some plumes were a kilometer or more wide and the emissions went directly into the atmosphere – the concentration was a hundred times higher than normal.”
But the 11 percent increase in methane in the last decade may also slow depletion of the ozone shield over the rest of the planet,
Japan has successfully captured natural gas from deep under the ocean by tapping into methane hydrates, using a new technology that could revolutionize the world’s energy supply. It is the first country to succeed in exploiting the gas.
The gas supplies locked into methane hydrates, also known as methane clathrates and “fire ice”, are potentially the largest single source of fossil fuels on the planet and for Japan, a country desperate for its own energy supplies, this could be an economic lifeline.
On the other hand, many would regard almost unlimited supplies of a new fossil fuel as bad news in a world where there is already climate change caused by man’s existing excess carbon emissions.
The quantity of energy locked away in these formations is enormous. If you melt a one cubic meter block of methane hydrate, about 160 cubic meters of gaseous methane will be released.
So far the problem with exploiting the hydrates has been that they become unstable if the pressure or temperature changes. However, it is by reducing the pressure on the deposits in controlled conditions that Japanese technicians have been able to capture the released methane.
Environmental groups fear the global warming potential of hydrates. Scientists are already studying the effect of warming oceans and permafrost melting on the large deposits of hydrates on the sea-bed and in the tundra.
The prospect of drilling into them and possibly releasing methane – a potent greenhouse gas – in an attempt to exploit them for fuel will spark an international debate
Originally posted by MamaJ
reply to post by happykat39
Hey Happykat
Thank you for the videos.... watching one of them now.....
You and I both may be affected if one were to happen within the New Madrid Zone.
Gas release from the larger pockmarks could have been sudden and possibly even violent, with a massive volume expelled into the ocean and atmosphere within hours or days. Scientists could not rule out volcanic activity having caused the release of gas, but another possibility was the release of sub- seafloor hydrocarbon gas, which would have coincided with drops in the sea level of about 100 meters during ice ages and subsequent warming of sea temperatures.
The three giant pockmarks, the largest measuring 11 km by 6 km in diameter and 100 meters deep, were possibly twice the size of the largest pockmarks recorded in scientific literature, said a statement from New Zealand’s Institute of Geological and Nuclear Sciences (GNS Science).
An international team of scientists have found what they believe are the world’s biggest ” pockmarks” — craters formed by seafloor eruptions of gas or fluids — in waters off New Zealand.
“Methane is a potent greenhouse gas and the escape of big volumes would have significant implications for climate change and ocean acidification,” he said. The research had global implications because the episodic and cumulative release of greenhouse gases into the ocean and atmosphere in the geological past would have contributed to episodes of global warming.
I've cited numerous articles that show these plumes should normally dissolve before they reach the surface but many of them aren't. And when they do release there is enough in the local concentration if it reaches 5% or higher to have an explosive mix. These plumes may spread more evenly once they reach higher into the troposphere but at less than 10 meters all they need is an ignition source for a very loud explosion.
Also, I've said it before, how can you be so sure that these methane plumes aren't rising into the stratosphere and the mesosphere when we have no way of testing the air in those levels? There may be much more than trace amounts in those levels and you nor I know for sure.
Local authorities received several calls from residents at Matteson Lake and in areas as far away as Union City reporting a loud noise that sounded like an explosion. The very loud, strong sonic booms caused 30 to 40 reports to the 911 center according to one dispatcher, some of which were transferred from Calhoun County dispatch.
But most people who reported the strange event on March 19 spoke of buildings and the earth shaking, rather than of hearing a distant boom or rumbling. According to Abbotts, while sonic booms can be very powerful, and rattle windows 30 miles away, a boom would not shake buildings or be felt as a tremor.
Initial reports of loud noises and windows rattling in the region March 19 could not be linked to an earthquake or military training from nearby bases. The U.S. Geological Survey’s National Earthquake Information Center said there was no recorded seismic activity in the area, and calls to nearby military bases revealed no testing had taken place. But several calls later revealed the source — fighter jets flying from the Naval Air Station Patuxent River in Maryland.