Sentences with phrase «system leakage rates»

However, because of the high global warming potential of methane (CH4, the major component of NG), climate benefits from NG use depend on system leakage rates.

We find (i) measurements at all scales show that official inventories consistently underestimate actual CH4 [methane] emissions, with the natural gas and oil sectors as important contributors; (ii) many independent experiments suggest that a small number of «super-emitters» could be responsible for a large fraction of leakage; (iii) recent regional atmospheric studies with very high emissions rates are unlikely to be representative of typical natural gas system leakage rates; and (iv) assessments using 100 - year impact indicators show system - wide leakage is unlikely to be large enough to negate climate benefits of coal - to - natural gas substitution.

Not exact matches

Stefan Schwietzke, a research associate at the National Oceanic and Atmospheric Administration's Earth System Research Laboratory in Boulder, Colo., said Howarth may be overestimating methane emissions from shale gas because his 12 percent leakage rate estimate is based mostly on a single satellite study.

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EPA's recent Inventory of U.S. Greenhouse Gas Emissions and Sinks showed U.S. natural gas systems had a methane leakage rate of 1.2 percent in 2015 — which is 30 percent lower than global average.

Five of those studies are featured in the following EID graphic illustrating the most prominent research showing low leakage rates from U.S. natural gas systems.

Cutting methane leakage rates from natural gas systems to less than 1 percent of total production would ensure that the climate impacts of natural gas are lower than coal or diesel fuel over any time horizon.

Recent standards from the Environmental Protection Agency (EPA) will substantially reduce leakage from natural gas systems, but to help slow the rate of global warming and improve air quality, further action by states and EPA should directly address fugitive methane from new and existing wells and equipment.