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The Methane Thread pt. 2

Re: The Methane Thread pt. 2

Unread postby Tanada » Sat 22 Feb 2020, 15:30:18

asg70 wrote:This article says the methane bomb is unlikely. I wouldn't bank on it, but it's nice to know there's a less doomy model out there.

https://phys.org/news/2020-02-carbon-re ... e-gas.html


It seems rather obvious that as the ocean warms downward the progress is very slow. Methane Hydrate dissolution will take place gradually for many decades, perhaps even centuries. The so called Methane Bomb is more of a Methane Trickle, which means in effect the warming it causes will be sustained for a very long time as the methane will come out fast enough to overcome natural sinks.
I should be able to change a diaper, plan an invasion, butcher a hog, design a building, write, balance accounts, build a wall, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, pitch manure, program a computer, cook, fight efficiently, die gallantly. Specialization is for insects.
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Re: The Methane Thread pt. 2

Unread postby rockdoc123 » Wed 26 Feb 2020, 23:01:39

New paper:
Dyonisius, M. N. et al, 2020. Old Carbon reservoirs were not important in the deglacial methane budget. Science, 21, V 367. Pp 907-910. DOI: 10.1126/science.aax0504

Abstract:

Permafrost and methane hydrates are large, climate-sensitive old carbon reservoirs that have the potential to emit large quantities of methane, a potent greenhouse gas, as the Earth continues to warm. We present ice core isotopic measurements of methane (Δ14C, δ13C, and δD) from the last deglaciation, which is a partial analog for modern warming. Our results show that methane emissions from old carbon reservoirs in response to deglacial warming were small (<19 teragrams of methane per year, 95% confidence interval) and argue against similar methane emissions in response to future warming. Our results also indicate that methane emissions from biomass burning in the pre-Industrial Holocene were 22 to 56 teragrams of methane per year (95% confidence interval), which is comparable to today.
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Re: The Methane Thread pt. 2

Unread postby Tanada » Fri 06 Mar 2020, 11:15:07


November 2019: 1877.0 ppb
November 2018: 1866.2 ppb
I should be able to change a diaper, plan an invasion, butcher a hog, design a building, write, balance accounts, build a wall, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, pitch manure, program a computer, cook, fight efficiently, die gallantly. Specialization is for insects.
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