This means the Aliso Canyon well is emitting 62 to 98 percent as
much methane per hour as the entire Barnett Shale.
Not exact matches
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.
Perhaps someone with a better background on geology could explain why there's so
much more
methane extracted
per unit of coal resource in coalbed
methane than is vented in regular coal mining.
The study shows that during drilling, as
much as 34 grams of
methane per second were spewing into the air from seven natural gas well pads in southwest Pennsylvania — up to 1,000 times the EPA estimate for
methane emissions during drilling, Purdue atmospheric chemistry professor and study lead author Paul Shepson said in a statement.
Perhaps someone with a better background on geology could explain why there's so
much more
methane extracted
per unit of coal resource in coalbed
methane than is vented in regular coal mining.
Hydrate is condensed phase, so
much higher density overall, but it's only one
methane per many water molecules.
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.
And
much to their surprise, they found 34 grams of
methane leaking
per second,
per square kilometer, at seven well pads in the drilling phase.
That is,
methane, nitrous oxide, CFCs and minor GHGs add TWICE as
much forcing in GISS - E2 - R as
per the AR5 best estimate.
1µmol CH4 = 1.6e - 5g / l = 1.6e - 2 g / m ^ 3 1.5 e9 g / day / 2.4 e15 m ^ 3 = ~ 6.3e - 7 g / m ^ 3 / day = ~ 2.5e - 6 micromolar increase
per day diluted over the volume of the Gulf, However, given the 80 fold variation in concentrations observed above under
much milder conditions, and the observations of clathrate formation at the wellhead, there are undoubtedly plumes of near
methane saturated water (with volumes orders of magnitude less than that of the Gulf) drifting in the currents, slowly dissipating by diffusion and biogeochemical oxidation.
Put another way: one liter of
methane accelerates climate change as
much as 80 liters of carbon dioxide does, at least in the short term (more on this later), and cows burp it out continuously, to the tune of more than 150 liters
per day.
Regardless of the discounting, the SCAR valuation
per ton is
much larger for
methane and the five aerosol - related species than for CO2, with a ton of
methane causing ~ 30 — 100 times more damage than a ton of CO2 and a ton of the aerosols causing up to ~ 7800 times more damage.
The analysis was partly based on a
methane leakage estimate of 1.5 % of natural gas consumed, a figure assumed by the federal government,
methane of course having
much more climate impact
per gram than CO2.