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Misjudging methane release? + Law unto themselves: Australian Bureau of Meteorology

#1
C C Offline
Global climate models may be misjudging methane releases into the atmosphere
https://wattsupwiththat.com/2017/11/20/g...tmosphere/

EXCERPT: A study of a Lake Erie wetland suggests that scientists have vastly underestimated the number of places methane-producing microbes can survive — and, as a result, today’s global climate models may be misjudging the amount of methane being released into the atmosphere....



A Law Unto Themselves: The Australian Bureau of Meteorology
http://jennifermarohasy.com/2017/11/law-...teorology/

EXCERPT: [...] The Bureau have since acknowledged that their method of recording temperatures from electronic sensors is not accredited, though they claim it nevertheless gives readings equivalent to mercury thermometers. Interestingly, your office emailed a journalist, backing them up – claiming that a single electronic sensor can “mirror the behaviour of liquid in glass thermometers”. This is nonsense, because mercury and alcohol thermometers have different time constants. This is one reason the World Meteorological Organisation (WMO) insist on numerical averaging: alcohol thermometers (that measure temperature minima) have longer time constants than mercury thermometers (that measure temperature maxima)....

MORE: http://jennifermarohasy.com/2017/11/law-...teorology/
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#2
RainbowUnicorn Offline
(Nov 21, 2017 04:31 AM)C C Wrote: Global climate models may be misjudging methane releases into the atmosphere
https://wattsupwiththat.com/2017/11/20/g...tmosphere/

EXCERPT: A study of a Lake Erie wetland suggests that scientists have vastly underestimated the number of places methane-producing microbes can survive — and, as a result, today’s global climate models may be misjudging the amount of methane being released into the atmosphere....



yes, i have been reading about this on and off for around 15 years.
the problem being the potential reality scaring the public soo much that they just turn off to the real science...
however...
it seems like some countrys have turned off to the science regardless.

methane sinks in melting permafrost is the big unknown issue.

my question which has never been answered is what if we burn it off ?
is the burning of the methane less damaging than letting it out into the atmosphere ?

there is already methane burning robots in many places world wide.

should governments be looking at putting these in permafrost melt zones ?
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#3
C C Offline
(Nov 21, 2017 07:51 AM)RainbowUnicorn Wrote: my question which has never been answered is what if we burn it off ?is the burning of the methane less damaging than letting it out into the atmosphere ?


A balancing act. Burning methane produces less carbon dioxide than burning coal. But the effect of leaking / escaping methane doesn't endure as long in the atmosphere as carbon dioxide. While methane may be incredibly more potent than carbon dioxide during a 20-year period, it's contended to drop significantly in potency over a century's span.

- - -
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#4
RainbowUnicorn Offline
(Nov 21, 2017 06:34 PM)C C Wrote:
(Nov 21, 2017 07:51 AM)RainbowUnicorn Wrote: my question which has never been answered is what if we burn it off ?is the burning of the methane less damaging than letting it out into the atmosphere ?


A balancing act. Burning methane produces less carbon dioxide than burning coal. But the effect of leaking / escaping methane doesn't endure as long in the atmosphere as carbon dioxide. While methane may be incredibly more potent than carbon dioxide during a 20-year period, it's contended to drop significantly in potency over a century's span.

- - -

Thanks.

this is interesting
https://en.wikipedia.org/wiki/Atmospheric_methane

Quote:What is the lifetime of methane in the atmosphere?

As methane rises into the air, it reacts with the hydroxyl radical to create water vapor and carbon dioxide. The lifespan of methane in the atmosphere was estimated at 9.6 years as of 2001; however, increasing emissions of methane over time reduce the concentration of the hydroxyl radical in the atmosphere.


https://en.wikipedia.org/wiki/Hydroxyl_r...atmosphere

Quote:In 2014, researchers reported their discovery of a "hole" or absence of hydroxyl throughout the entire depth of the troposphere across a large region of the tropical West Pacific. They suggested that this hole is permitting large quantities of ozone-degrading chemicals to reach the stratosphere, and that this may be significantly reinforcing ozone depletion in the polar regions with potential consequences for the climate of the Earth.[13]

http://www.pnas.org/content/114/21/5367.full
Quote:The most likely explanation for the renewed growth in atmospheric methane involves a decrease in hydroxyl (OH), the main sink for atmospheric methane, that is partially offset by a decrease in methane emissions.
Quote:Methane is the second strongest anthropogenic greenhouse gas and its atmospheric burden has more than doubled since 1850. Methane concentrations stabilized in the early 2000s and began increasing again in 2007. Neither the stabilization nor the recent growth are well understood, as evidenced by multiple competing hypotheses in recent literature.

Quote:Results
Most Likely Solution.
The most likely solution, defined as the largest posterior probability sampled, found here is that the renewed growth is due to a decline in the OH sink, partially offset by a decrease in methane emissions.

[Image: F2.large.jpg]
[Image: F2.large.jpg]

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