Not exact matches
Methane is the second-most prevalent greenhouse gas according to the EPA, and is believed to be 20 times more potent as a
heat - trapping greenhouse gas
than carbon dioxide.
Methane is about 23 times more potent at trapping
heat in our environment
than carbon dioxide.
Methane or natural gas is 72 times more potent at capturing
heat in the atmosphere
than carbon dioxide over the first 20 years after release - and to deal with climate change, we need to focus on the next few decades.
Methane is a greenhouse gas that traps
heat even better
than carbon dioxide.
As temperatures warm, the Arctic permafrost thaws and pools into lakes, where bacteria feast on its carbon - rich material — much of it animal remains, food, and feces from before the Ice Age — and churn out
methane, a
heat trapper 25 times more potent
than carbon dioxide.
Cattle are responsible for 20 percent of U.S. emissions of
methane, which traps
heat in the atmosphere 20 times more effectively
than carbon dioxide.
After
heating the ponds by 4 to 5 degrees over seven years, the scientists found the lakes»
methane emissions more
than doubled.
Although the concentration of carbon dioxide in the atmosphere is much higher, at around 385 parts per million,
methane is a worry as it is much better
than carbon dioxide at locking in
heat from solar radiation.
Carbon dioxide gets more press, but
methane is the more powerful agent of global warming, 21 times more effective
than carbon dioxide at trapping
heat in the atmosphere.
It used to be thought that the
methane in hydrates was made the way oil is — that Earth's internal
heat makes
methane, the smallest hydrocarbon, by cracking bigger hydrocarbons at depths of more
than a mile below the seafloor.
While Boyd took the call, he unintentionally let a copper foil
heat for longer
than usual before exposing it to
methane vapor, which provides the carbon atoms needed for graphene growth.
Molecule for molecule,
methane traps 20 to 25 times more
heat in the atmosphere
than does carbon dioxide.
While this represents a much smaller percentage of overall greenhouse gases
than carbon dioxide,
methane is about 20 times more effective at trapping
heat.
Beyond that, more
than 95 percent of the world's
methane hydrates exist in deep - ocean settings where it is unlikely water would ever
heat up enough to significantly destabilize them.
Just as oil and natural gas fields have been found to be emitting more
methane than official government estimates suggest, a new study shows that more
methane than previously thought may be leaking from the other end of that system — cities, where people actually use natural gas for
heating and cooking.
But natural gas consists predominately of
methane, so even small leaks from natural gas wells can create large climate concerns because
methane is a potent greenhouse gas — it's about 30 times more effective at trapping solar
heat than carbon dioxide over a 100 - year period.
Methane doesn't last as long in the atmosphere, but it is much more efficient
than carbon dioxide at trapping
heat.
That extra
methane would have produced a greenhouse effect strong enough to
heat the planet to a higher average temperature
than it is today, although the Sun was around 20 percent dimmer at that time (Pavlov et al, 2000).
There is an enormous amount of
methane at the bottom of the oceans; and
methane reflects
heat far better
than carbon dioxide does.
NASA research shows that permafrost — permanently frozen ground in the Arctic that contains
heat - trapping gases such as
methane and carbon dioxide — is thawing at faster rates now
than scientists have observed before.
According to the U.S. Environmental Protection Agency, the greenhouse gas
methane is highly efficient at trapping
heat in the atmosphere and a significant contributor to global warming, over 80 times more potent
than carbon dioxide.
Of all greenhouse gases,
methane seems the most innocuous — yet it traps 23 times more
heat in the atmosphere
than does CO2.
Over a 100 - year timeframe,
methane is about 34 times as potent at trapping
heat than carbon dioxide, and over 20 years, it's 86 times more potent.
Methane gas traps even more
heat on the earth's surface
than carbon dioxide, making it an important part of the climate change puzzle.
Methane is roughly 28 times more efficient at trapping heat in the Earth's atmosphere over a 100 - year time frame, and current levels of methane in the atmosphere are higher than at any point in the past 2,000
Methane is roughly 28 times more efficient at trapping
heat in the Earth's atmosphere over a 100 - year time frame, and current levels of
methane in the atmosphere are higher than at any point in the past 2,000
methane in the atmosphere are higher
than at any point in the past 2,000 years.
The Howarth paper, «
Methane and the greenhouse - gas footprint of natural gas from shale formations,» had estimated that leakage of gas from hydraulic fracturing operations (given that natural gas is mainly methane, a potent heat - trapping substance) and other factors made the climate impact of gas from such wells substantially worse than that of coal, measured per unit of
Methane and the greenhouse - gas footprint of natural gas from shale formations,» had estimated that leakage of gas from hydraulic fracturing operations (given that natural gas is mainly
methane, a potent heat - trapping substance) and other factors made the climate impact of gas from such wells substantially worse than that of coal, measured per unit of
methane, a potent
heat - trapping substance) and other factors made the climate impact of gas from such wells substantially worse
than that of coal, measured per unit of energy.
Some trace gases such as
methane have a stronger impact on the
heat balance of the earth, per molecule,
than CO2 does.
This is your hardest question to answer, as the question seems to presuppose their are other sources of
heat that are warming up the earth other
than global warming due to CO2,
methane, nitrous oxide (from agriculture and fertilisers) and CFCs (chlorofluorocarbons, from refrigerants etc) accumulating in the atmosphere from mankind's various activities.
The number of features does like this does not put a significant upper bound on
methane flux any more
than a good estimate of
heat loss through geysers puts an upper limit on the geothermal flux of the Earth.
One thing that I have never had explained and that I would very much like to understand is this: I believe carbon dioxide and
methane are greenhouse gasses effectively because they retain
heat more or longer
than the Oxygen and Nitrogen that make up the bulk of the atmosphere.
With a
methane economy we could
heat and cool our homes, produce electric power at home using a small gas turbine generator, and fuel our vehicles all from our own home tank at far lower cost
than using gasoline.
That's a cause for concern because, among other reasons,
methane traps more
heat than carbon dioxide, making it a more potent greenhouse gas and thus of concern for global warming, according to a study detailing the trip's findings and published recently in the journal Atmospheric Environment.
But in reality,
methane gas is 25 times more potent
than CO2 at trapping
heat.
While natural gas releases half the carbon dioxide of coal when it is burned, it is made up of 80 percent
methane, a potent greenhouse gas that traps
heat 86 times more effectively
than CO2 over a 20 - year span.
«[Howarth et al.'s] analysis is seriously flawed in that they significantly overestimate the fugitive emissions associated with unconventional gas extraction, undervalue the contribution of «green technologies» to reducing those emissions to a level approaching that of conventional gas, base their comparison between gas and coal on
heat rather
than electricity generation (almost the sole use of coal), and assume a time interval over which to compute the relative climate impact of gas compared to coal that does not capture the contrast between the long residence time of CO2 and the short residence time of
methane in the atmosphere.»
On the other hand,
heat released by the fire itself would likely be thousands of times less
than heat produced by the greenhouse effect before the
methane is oxidized into CO2.
Methane valued at more
than $ 1 billion escapes from oil and natural gas extraction processes in the U.S. each year, enough to
heat 7 million homes.
She cited recent research that showed that the
heat trapped by gases like
methane lasted far longer
than 10 years.
More
than half of China's non-CO2 GHG emissions come in the form of
methane, which can trap 28 times as much
heat as carbon dioxide on a per metric tonne basis.
We push the oil and gas industry to limit
methane pollution, which traps more
than 80 times as much
heat on our planet as carbon dioxide.
Decomposing vegetable matter produces
methane, a «global warming» gas that retains
heat 20 times more efficiently
than CO2.
For example, because the mass balance argument says nothing about absolute numbers or attribution it may be that we are also — for example — destroying carbon - fixing plankton, reducing the breaking of waves and hence mechanical mixing with the upper ocean, releasing
methane in the tundra which was previously held by acid rain and which can now be converted to CO2, or it may be we are just seeing a deep current, a tiny bit warmer
than usual because of the MWP,
heating deep ocean clathrate so that methanophage bacteria can devour it and give off CO2.
Methane is 34 times stronger than carbon dioxide at trapping heat over a 100 - year period and 86 times stronger over 20 years; roughly 10 percent of all US methane emissions come from coal
Methane is 34 times stronger
than carbon dioxide at trapping
heat over a 100 - year period and 86 times stronger over 20 years; roughly 10 percent of all US
methane emissions come from coal
methane emissions come from coal mining.
In a story published on the WSU website and now getting wide distribution Deemer said she measured dissolved gases in the water column of Lacamas Lake in Clark County and found that
methane emissions — a substance 25 times more effective
than carbon dioxide at trapping
heat in the atmosphere — jumped 20-fold when the water level was drawn down.
Methane emissions, which account for under 10 percent of greenhouse gases spewed into the atmosphere but trap much more
heat than CO2, could increase 6 percent over the next 10 years, according to the Environmental Protection Agency.
Landfill
methane can be tapped, captured, and used as a fairly clean energy source for generating electricity or
heat, rather
than leaking into the air or being dispersed as waste.
The expert, Dr. James E. Hansen, and his colleagues conclude in a new analysis that the warming seen in recent decades has been caused mainly by other
heat - trapping emissions —
methane, chlorofluorocarbons, black particles of diesel and coal soot and compounds that create the ozone in smog — which are easier to control
than carbon dioxide, with many of them already on the decline.
Another remnant of Germany's coal mining past is invisible: coal mine
methane, which can build - up inside the mining shafts for decades after their closure.Not only does
methane pose an explosion hazard, it is also a very potent greenhouse gas, being about 20 times more effective in trapping
heat in the atmosphere
than carbon dioxide.
Apart from black carbon, over-concentrations of nitrous oxide and
methane also concern the scientists as the larger -
than - expected concentration of both these gases can contribute to increasing the
heat and thinning the ozone layer.
Methane has an ability to trap
heat almost 21 times more effectively
than carbon dioxide.