Sentences with phrase «anthropogenic emissions of methane»

Since 1999, however, they indicate that anthropogenic emissions of methane have risen again.

Stepping up action to tackle methane leaks along the oil and gas value chain is essential to bolster the environmental case for gas: these emissions are not the only anthropogenic emissions of methane, but they are likely to be among the cheapest to abate.

The paper, «Anthropogenic emissions of methane in the United States,» is being published in the Proceedings of the National Academy of Sciences.

Overall, the new measures would lower global anthropogenic emissions of methane by 50 % and of black carbon aerosols, also known as soot, by 80 %.

Not exact matches

This is now possible thanks to the recently published major carbon producers analysis by Richard Heede of the Climate Mitigation Service, Tracing anthropogenic carbon dioxide and methane emissions to fossil fuel and cement producers, 1854 - 2010.

Previous studies suggest that natural geologic methane emissions of the past are at least as high as natural emissions today, so studying the ancient ice cores allows researchers to accurately determine the upper limit of geologic emissions, separate from their anthropogenic counterparts.

2011) of the present atmospheric methane burden by 2100, or a 50 % increase fifty years primarily due to increase emissions from marshlands and conventional anthropogenic sources.

This assessment report looks into all aspects of anthropogenic emissions of black carbon and tropospheric ozone precursors, such as methane.

Some of the budget estimates also make an allowance for the effects of anthropogenic emissions of warming gases other than CO2, such as methane.

«Efforts to control methane emissions should be part of a broad effort to reduce, preferably end, anthropogenic [greenhouse gas] emissions at the earliest possible date,» he wrote.

Also note that human induced warming probably will trigger natural C02 / methane emissions leading to further warming so anthropogenic source will probably play a decreasing role in the amount of C02 in the atmosphere as the planet moves to a new equilibrium point.

This presupposes that all of the atmospheric CO2 increase is of anthropogenic origin without regard to increases from non-anthropogenic sources such as changes in phytoplankton, volcanic eruptions, breakdown of methane emissions, deep ocean turnover, etc..

Fluxes of methane, carbon dioxide and nitrous oxide in boreal lakes and potential anthropogenic effects on the aquatic greenhouse gas emissions

The Intergovernmental Panel on Climate Change (IPCC) estimates global anthropogenic greenhouse gas emissions for 1990 at 39.4 billion tonnes of carbon dioxide equivalent, suggesting that the Nigerian emissions may have represented approximately 0.09 % of the total in terms of CO2 and 0.76 % of the total in terms of methane, using the IPCCs 100 - year global warming potential for methane of 25.

Methane is an important part of the anthropogenic radiative forcing Methane emissions have a direct GHG effect, and they effect atmospheric chemistry and stratospheric water vapour which have additional impacts natural feedbacks involving methane likely to be important in future — via wetland response to temperature / rain change, atmospheric chemistry and, yes, arctic sources There are large stores of carbon in the Arctic, some stored as hydrates, some potentially convertible to CH4 by anaerobic resporation [from wikianswers: Without Methane is an important part of the anthropogenic radiative forcing Methane emissions have a direct GHG effect, and they effect atmospheric chemistry and stratospheric water vapour which have additional impacts natural feedbacks involving methane likely to be important in future — via wetland response to temperature / rain change, atmospheric chemistry and, yes, arctic sources There are large stores of carbon in the Arctic, some stored as hydrates, some potentially convertible to CH4 by anaerobic resporation [from wikianswers: Without Methane emissions have a direct GHG effect, and they effect atmospheric chemistry and stratospheric water vapour which have additional impacts natural feedbacks involving methane likely to be important in future — via wetland response to temperature / rain change, atmospheric chemistry and, yes, arctic sources There are large stores of carbon in the Arctic, some stored as hydrates, some potentially convertible to CH4 by anaerobic resporation [from wikianswers: Without methane likely to be important in future — via wetland response to temperature / rain change, atmospheric chemistry and, yes, arctic sources There are large stores of carbon in the Arctic, some stored as hydrates, some potentially convertible to CH4 by anaerobic resporation [from wikianswers: Without oxygen.

Therefore, adding methane emissions to the list of anthropogenic dangerous «greenhouse gases» could bolster the perceived human influence percentage to within «acceptable» ranges (near 50 %).

Nevertheless, on multi-millennial time scales, the positive feedback to anthropogenic warming of such methane emissions is potentially larger.»

Atmospheric methane between 1000 AD and present: Evidence of anthropogenic emissions and climatic variability

Times of war and plague when large population losses could have reduced anthropogenic emissions are coincident with short periods of decreasing global methane concentrations.»

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.

The United Nations» Food and Agriculture Organization estimates that livestock production accounts for some 2.2 billion tons of carbon dioxide equivalent greenhouse gases annually, or about 35 percent of total anthropogenic methane emissions.

(G&A are also inconsistent on a number of fronts, including applying the 20 - year GWP for methane to livestock but using the 100 - year GWP for other anthropogenic methane emissions, and making an adjustment to emissions figures for the year 2000 to account for increases in livestock tonnage between 2002 and 2009, but not making similar adjustments for rising fossil fuel consumption over the same time).