Sentences with phrase «if global methane»

It is shown that if global methane emissions were to increase by factors of 2.5 and 5.2 above current emissions, the indirect contributions to RF would be about 250 % and 400 %, respectively, of the RF that can be attributed to directly emitted methane alone.

Not exact matches

He also models the global warming that would occur if concentrations of greenhouse gases in the atmosphere were to be doubled (due to increases in carbon dioxide and methane emissions from dragons and the excessive use of wildfire).

If large amounts of undecayed matter were to defrost, decompose and release methane and carbon dioxide into the atmosphere, the impact on global temperatures would most likely be enormous.

If even a small proportion of the methane they produce is released, we might be overwhelmed by huge tsunamis, runaway global warming, and extinctions.

If global levels of hydroxyl decrease, global methane concentrations will increase — even if methane emissions remain constant, the researchers saIf global levels of hydroxyl decrease, global methane concentrations will increase — even if methane emissions remain constant, the researchers saif methane emissions remain constant, the researchers say.

So if the mine is in the middle of nowhere and there are not other sources of pollution, then the methane released simply becomes part of the global background.

The new study shows that if not for the anaerobic methane oxidation process, freshwater environments would account for an even greater portion of the global methane budget.

Global energy - related emissions could peak by 2020 if energy efficiency is improved; the construction of inefficient coal plants is banned; investment in renewables is increased to $ 400 billion in 2030 from $ 270 billion in 2014; methane emissions are cut in oil and gas production and fossil fuel subsidies are phased out by 2030.

If my potato peels, leftover rice, and parsley stems had been buried in a landfill, deprived of sun or air, those same scraps would have given rise to methane, a potent greenhouse gas that contributes to global warming.

If this is correct, then we could be seeing be a very limited negative feedback from global warming just now which increases hydroxyl concentrations which in turn breaks down the methane faster.

There's a fantastic paper by the authors of the Beyond Zero Emissions Land Use Report explaining how there's an opportunity to reduce land sector emissions (especially methane) to temporarily halt global warming buying us time to get off fossils fuels if we reduced livestock production by say 50 % even.

If Arctic methane were driving a substantial increase in the global atmospheric methane concentration, it would be detectable in this time - mean interhemispheric gradient.

AC at 78 wrote: «If there are bubbles of methane here and there boosting the local CH4 concentration spectacularly but which on the global level amount to less than 3 % of the effect of CO2 emissions from fossil fuels, what does it matter really?»

If there are bubbles of methane here and there boosting the local CH4 concentration spectacularly but which on the global level amount to less than 3 % of the effect of CO2 emissions from fossil fuels, what does it matter really?

There are enough health - damaging pollutants in the air today such that, if they (tropospheric ozone, its principal precursor methane, black soot, and some other trace gases that contribute to the global warming) were reduced by feasible amounts, the planet's energy balance could be restored, or nearly so.

Methane plays a minor role in global warming but could get much worse if permafrost starts to melt.

Why the heck would they be concerned about reducing methane emissions if global warming is primarily a product of natural variation?

If enough methane is released, that could really put a foot on the gas pedal with this whole global warming thing.

Methane is generally considered secondary to carbon dioxide in its importance to climate change, but what role might methane play in the future ifMethane is generally considered secondary to carbon dioxide in its importance to climate change, but what role might methane play in the future ifmethane play in the future if global

«We have to control methane immediately, and natural gas is the largest methane pollution source in the United States,» said Robert Howarth, the David R. Atkinson Professor of Ecology and Environmental Biology, who explains in an upcoming journal article that Earth may reach the point of no return if average global temperatures rise by 1.5 to 2 degrees Celsius in future decades.

What is concerning is the possibility that rapid global warming could occur faster than many people believe is possible, if global warming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extincglobal warming could occur faster than many people believe is possible, if global warming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extincglobal warming due to atmospheric carbon dioxide causes the Earth's atmosphere to warm enough to release enormous deposits of frozen methane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinmethane (CH4) that are stored in the permafrost above the Arctic Circle and in frozen methane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinmethane ice, known as methane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human Extinmethane hydrate, underneath the floors of the oceans throughout the world (see: How Methane Gas Releases Due To Global Warming Could Cause Human ExtinMethane Gas Releases Due To Global Warming Could Cause Human ExtincGlobal Warming Could Cause Human Extinction).

He says that even if methane hydrates were resting beneath the Antarctic Ice Sheet, and they became destabilized and started bubbling methane up through the seawater to the surface, it would take hundreds of years for these methane reserves to have a detectable impact on global climate.

And at the end of the article from which this excerpt was taken, Arctic News and the Arctic Methane Emergency Group calls for global geoengineering to be deployed immediately, as if it has not already been going on for over 6 decades in clear view and causing catastrophic effects.

Methane hydrates — methane molecules trapped in frozen water molecule cages in tundra and on continental shelves — and organic matter such as peat locked in frozen soils (permafrost) are likely mechanisms in the past hyperthermals, and they provide another climate feedback with the potential to amplify global warming if large scale thawing occurs [209]-Methane hydrates — methane molecules trapped in frozen water molecule cages in tundra and on continental shelves — and organic matter such as peat locked in frozen soils (permafrost) are likely mechanisms in the past hyperthermals, and they provide another climate feedback with the potential to amplify global warming if large scale thawing occurs [209]-methane molecules trapped in frozen water molecule cages in tundra and on continental shelves — and organic matter such as peat locked in frozen soils (permafrost) are likely mechanisms in the past hyperthermals, and they provide another climate feedback with the potential to amplify global warming if large scale thawing occurs [209]--[210].

Sustainable farming across Europe is only possible if emissions of methane — a greenhouse gas that contributes to global warming — are tackled alongside carbon dioxide -LSB-...]

«We have to control methane immediately, and natural gas is the largest methane pollution source in the United States,» said Howarth, who explains in an upcoming journal article that Earth may reach the point of no return if average global temperatures rise by 1.5 to 2 degrees Celsius in future decades.

Sam, While agreeing generally that more people might cause some global warming, there are imponderables like — if not people, then maybe termites would populate the earth, belching methane.

If there is a «ticking time bomb» on our planet that could lead to a global warming so rapid and sudden that we would have no way of dealing with it, it's methane.

In other words, even if claims by EDF and virtually every other environmental group that U.S. oil and gas methane emissions are underestimated — they are almost certainly not a significant percentage of global emissions.

New research shows that the amount of carbon stored in frozen soils at high latitudes is double previous estimates and could, if emitted as carbon dioxide and methane, lead to a significant increase in global temperatures by the end of this century.

Eventually, we're going to have to do what works scientifically, that keeps methane out of the atmosphere, and takes CO2 back out of it — if it is not already too late to stop positive feedback generated low level runaway global heating.

If there is a regional layer of high salt methane hydrate, shallow, at 70 - 150 meters and so susceptible to global warming, and if that layer is going to start to blow, then drilling to relieve pressure seems like a good idea, to mIf there is a regional layer of high salt methane hydrate, shallow, at 70 - 150 meters and so susceptible to global warming, and if that layer is going to start to blow, then drilling to relieve pressure seems like a good idea, to mif that layer is going to start to blow, then drilling to relieve pressure seems like a good idea, to me.

If Americans want to consume vast quantities of cheap, factory - farmed cow and chicken and pig flesh, then there simply must be an unending supply of cheap factory - farmed grain to feed the animals, and an unending supply of cheap fossil fuels to power industrial agriculture, and the anthropogenic global warming associated with the CO2 and methane emissions from industrial animal agriculture must simply not be real.

RealClimate is wonderful, and an excellent source of reliable information.As I've said before, methane is an extremely dangerous component to global warming.Comment # 20 is correct.There is a sharp melting point to frozen methane.A huge increase in the release of methane could happen within the next 50 years.At what point in the Earth's temperature rise and the rise of co2 would a huge methane melt occur?No one has answered that definitive issue.If I ask you all at what point would huge amounts of extra methane start melting, i.e at what temperature rise of the ocean near the Artic methane ice deposits would the methane melt, or at what point in the rise of co2 concentrations in the atmosphere would the methane melt, I believe that no one could currently tell me the actual answer as to where the sharp melting point exists.Of course, once that tipping point has been reached, and billions of tons of methane outgass from what had been locked stores of methane, locked away for an eternity, it is exactly the same as the burning of stored fossil fuels which have been stored for an eternity as well.And even though methane does not have as long a life as co2, while it is around in the air it can cause other tipping points, i.e. permafrost melting, to arrive much sooner.I will reiterate what I've said before on this and other sites.Methane is a hugely underreported, underestimated risk.How about RealClimate attempts to model exactly what would happen to other tipping points, such as the melting permafrost, if indeed a huge increase in the melting of the methal hydrate ice WERE to occur within the next 50 years.My amateur guess is that the huge, albeit temporary, increase in methane over even three or four decades might push other relevent tipping points to arrive much, much, sooner than they normally would, thereby vastly incresing negative feedback mechanisms.We KNOW that quick, huge, changes occured in the Earth's climate in the past.See other relevent posts in the past from Realclimate.Climate often does not change slowly, but undergoes huge, quick, changes periodically, due to negative feedbacks accumulating, and tipping the climate to a quick change.Why should the danger from huge potential methane releases be vievwed with any less trepidation?

... In short, if we assume current policies, shale gas is almost a wash for global CO2, and methane will decrease or eliminate any small climate benefits of shale gas.

There is no doubt that carbon emissions are still rising and to add a gas that is 20 times more powerful as a global warming gas into the air in sudden out - gassing events, even if these are only a few years apart, builds a step rise in Carbon content in the atmosphere that will subsequently become the plateau before the next big methane out - gassing event, regardless as to where it comes from.

«If we can reduce emissions of methane, we can really help to slow global warming,» said Ryan McCarthy, a science adviser for the California Air Resources Board, which is drawing up rules to implement the new law.