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Methane Gas And Climate Change


jethro

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

We had reports of up to 1,000 'hummocks' that had grown across Yamal at the end of last Summer?

http://siberiantimes.com/other/others/news/big-bang-and-pillar-of-fire-as-latest-of-two-new-craters-forms-this-week-in-arctic/

It appears they have started to Pop!

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  • 5 months later...
Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......
  • 4 weeks later...
Posted
  • Location: Camborne
  • Location: Camborne

NASA-led study solves a methane puzzle

Quote

A new NASA-led study has solved a puzzle involving the recent rise in atmospheric methane, a potent greenhouse gas, with a new calculation of emissions from global fires. The new study resolves what looked like irreconcilable differences in explanations for the increase.

Methane emissions have been rising sharply since 2006. Different research teams have produced viable estimates for two known sources of the increase: emissions from the oil and gas industry, and microbial production in wet tropical environments like marshes and rice paddies. But when these estimates were added to estimates of other sources, the sum was considerably more than the observed increase. In fact, each new estimate was large enough to explain the whole increase by itself.

https://climate.nasa.gov/news/2668/nasa-led-study-solves-a-methane-puzzle/

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

https://www.nature.com/articles/s41467-018-03043-z?WT.ec_id=NCOMMS-20180214&spMailingID=55983380&spUserID=NjA4ODQzNzEzMTMS1&spJobID=1342054107&spReportId=MTM0MjA1NDEwNwS2

I'd been reassured that the shelf deposits were safe for quite a while but it appears I might have been being too hopeful? 

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  • 11 months later...
Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

I'm sticking this here so folk might link the two.

Anyone witnessing the Boscastle storm will know how big that cloud became and just how much moisture must have flooded the strat above the event.

If you care about 'feedbacks' ,and how quickly change will now impose itself, do watch this!

Edited by Gray-Wolf
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  • 2 weeks later...
Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......
On 16/02/2019 at 16:07, knocker said:

Article and link to recent paper

The permafrost bomb is ticking

https://www.yaleclimateconnections.org/2018/02/the-permafrost-bomb-is-ticking/

Folk talk of 'Global warming' and so maybe miss just how important the changing cold places are?

It is the changes on Greenland/Arctic /Antarctica that most concern me and that is because change there , as this article points out , can cascade from one small flip into a sudden global flip.

We've probably all seen 'myth busters' knock over a multi tonne slab with a 'cascade' that starts with a single domino? 

That state change from ice to water appears to radically alter the speed of change that is possible and so rapidly propels us into cascades of self reinforcing change from one single, small, push.

Yamal popped up in carbuncles 2 summers ago. Prof Semiletov tells us it takes such 'carbuncles'  3 years to go from formation to 'popping' ( as we have seen from the Yamal craters that formed a few years back?)

That means that we may well have our first 'domino' fall over this coming summer.

One extra push in an arctic system packed with systems galore ready to go pop themselves (From ocean to stratosphere?) 

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

And there's more....

https://amp.theguardian.com/environment/2019/feb/17/methane-levels-sharp-rise-threaten-paris-climate-agreement

https://insideclimatenews.org/news/19022019/arctic-bogs-permafrost-thaw-methane-climate-change-feedback-loop

Seeing as our current IPCC reports are a tad 'skimpy' on the impacts of permafrost impacts our changing understanding of their importance just means we drift further and further from the conclusions we were handed mere months ago?

Maybe this is why folk will not accept the '12 years' ( now 11) warning about us mending our ways to save our way of life?

EDIT: and yes! , time alone will tell but fancy us cleaning up our global polluting acts and then finding we needn't have bothered ....what a loss that would be for our world and its inhabitants!........

Edited by Gray-Wolf
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Posted
  • Location: Beccles, Suffolk.
  • Weather Preferences: Thunder, snow, heat, sunshine...
  • Location: Beccles, Suffolk.
2 minutes ago, knocker said:

How Melting Permafrost Is Beginning to Transform the Arctic

https://e360.yale.edu/features/how-melting-permafrost-is-beginning-to-transform-the-arctic

Don't tell anyone Malcolm, but it seems that it's all down to the Yellow Peril, after all? Ssssshhhh?:whistling:

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Posted
  • Location: Stoke Gifford, nr Bristol, SGlos
  • Location: Stoke Gifford, nr Bristol, SGlos
17 minutes ago, knocker said:

How Melting Permafrost Is Beginning to Transform the Arctic

https://e360.yale.edu/features/how-melting-permafrost-is-beginning-to-transform-the-arctic

Covered in the Ben Fogle prog last Tuesday eve on Channel5. A Ruskie scientist is chopping down some of the pine forests in Siberia, as his scientific research, found that forests actually accelerate permafrost melting, whereas returning Siberian countryside to grassplains protects the permafrost, as he claims any sunlight in their 'Summer' reflects more off grasslands.

I posted the findings in another climate change thread on here, last week. If you have a TV catch-up service just go into the Chnl5 guide and watch it - interesting stuff.

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Posted
  • Location: Camborne
  • Location: Camborne

Large loss of CO2 in winter observed across the northern permafrost region

Quote

Abstract

Recent warming in the Arctic, which has been amplified during the winter1,2,3, greatly enhances microbial decomposition of soil organic matter and subsequent release of carbon dioxide (CO2)4. However, the amount of CO2 released in winter is not known and has not been well represented by ecosystem models or empirically based estimates5,6. Here we synthesize regional in situ observations of CO2 flux from Arctic and boreal soils to assess current and future winter carbon losses from the northern permafrost domain. We estimate a contemporary loss of 1,662 TgC per year from the permafrost region during the winter season (October–April). This loss is greater than the average growing season carbon uptake for this region estimated from process models (−1,032 TgC per year). Extending model predictions to warmer conditions up to 2100 indicates that winter CO2 emissions will increase 17% under a moderate mitigation scenario—Representative Concentration Pathway 4.5—and 41% under business-as-usual emissions scenario—Representative Concentration Pathway 8.5. Our results provide a baseline for winter CO2 emissions from northern terrestrial regions and indicate that enhanced soil CO2 loss due to winter warming may offset growing season carbon uptake under future climatic conditions.

https://www.nature.com/articles/s41558-019-0592-8

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

Well fancy that?

114180.jpg?itok=GPIqgYpP
THEECOLOGIST.ORG

Methane emissions from fossil fuels owing to human activity is around 25 percent to 40 percent higher than thought

 

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......
tsn-logo.png
WWW.BNNBLOOMBERG.CA

Fossil fuel production and agriculture may be causing the acceleration in pollution levels.

With the addition of the 'record plumes' recorded by Semiletov in October I'm beginning to wonder if all the claims that the 'Methane time Bomb' cannot be real are similar to the "There will be NO Global pandemic" claims from in here in late Jan/early Feb?

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Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
8 hours ago, Gray-Wolf said:
tsn-logo.png
WWW.BNNBLOOMBERG.CA

Fossil fuel production and agriculture may be causing the acceleration in pollution levels.

With the addition of the 'record plumes' recorded by Semiletov in October I'm beginning to wonder if all the claims that the 'Methane time Bomb' cannot be real are similar to the "There will be NO Global pandemic" claims from in here in late Jan/early Feb?

I don't think so. The methane bomb, i.e., the short-term rapid acceleration of warming due to methane, has little scientific support and is basically physically implausible.
The high this year isn't all that surprising, given methane levels began rising again back in 2007, but they are still rising at a slower rate than they did in the 80s. So sure, a significant rise in methane is happening, but nowhere near the rates required for the the civilisation destroying warming predicted by the clathrate gun/methane bomb hypothesis.

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......
On 19/04/2020 at 21:55, BornFromTheVoid said:

I don't think so. The methane bomb, i.e., the short-term rapid acceleration of warming due to methane, has little scientific support and is basically physically implausible.
The high this year isn't all that surprising, given methane levels began rising again back in 2007, but they are still rising at a slower rate than they did in the 80s. So sure, a significant rise in methane is happening, but nowhere near the rates required for the the civilisation destroying warming predicted by the clathrate gun/methane bomb hypothesis.

Not so much a 'clathrate gun' but more a substitution of our Fossil fuel GHG forcings with a natural, and growing?, forcing that stymies any attempts on our part to bring down/reverse that forcing?

We may well be seeing the 'dirty side' of our polluting dramatically impacted by Covid-19 but will we see any reduction in global CO2/CH4 by the time this summer is done?

We were told , 2 years back?, that the growth in CO2 levels that year were part due to outputs from the far North/permafrost regions and I see no reason why such an input would 'reduce' but rather see increased melt of the region leading to ever greater breakdown of the 'stored' biomass there?

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  • 6 months later...
Posted
  • Location: Camborne
  • Location: Camborne

Bubbling methane craters and super seeps – is this the new face of the undersea Arctic?

Scientists have shared the first results of a trip to the world’s largest deposit of subsea permafrost and shallow methane hydrates. Fields of methane discharge continue to grow all along the East Siberian Arctic Ocean Shelf, with concentration of atmospheric methane above the fields reaching 16-32ppm (parts per million).This is up to 15 times above the planetary average of 1.85ppm.

The preliminary results are from this year’s only international scientific expedition to the eastern Arctic.

https://siberiantimes.com/other/others/news/bubbling-methane-craters-and-super-seeps-is-this-the-worrying-new-face-of-the-undersea-arctic/

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......
sannikov-strait.jpeg
EOS.ORG

Scientists have found a methane reservoir below the permafrost seabed of the Laptev Sea—a reservoir that could suddenly release large amounts of the potent greenhouse gas.

 

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  • 8 months later...
Posted
  • Location: Camborne
  • Location: Camborne

Scientists raise alarm over ‘dangerously fast’ growth in atmospheric methane

Methane concentrations in the atmosphere raced past 1,900 parts per billion last year, nearly triple preindustrial levels, according to data released in January by the US National Oceanic and Atmospheric Administration (NOAA). Scientists says the grim milestone underscores the importance of a pledge made at last year’s COP26 climate summit to curb emissions of methane, a greenhouse gas at least 28 times as potent as CO2.

The growth of methane emissions slowed around the turn of the millennium, but began a rapid and mysterious uptick around 2007. The spike has caused many researchers to worry that global warming is creating a feedback mechanism that will cause ever more methane to be released, making it even harder to rein in rising temperatures.

“Methane levels are growing dangerously fast,” says Euan Nisbet, an Earth scientist at Royal Holloway, University of London, in Egham, UK. The emissions, which seem to have accelerated in the past few years, are a major threat to the world’s goal of limiting global warming to 1.5–2 °C over pre-industrial temperatures, he says.

https://www.nature.com/articles/d41586-022-00312-2

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

I just don't get the 'Alarm' side of this at all?

We've hotly debated the subject for decades & those taking part surely recognised the potential for HUGE methane releases as the Far North warms at its accelerated rate?

Last summer saw 100F breached in the Arctic Circle, what do our newcomers think that means for the Permafrost? (& its 'cargo?)

When temps again allow for rapid microbial activity what do You think happens to those km thick layers of vegetation overlying the far North?

We might not have 'told You So' but we certainly asked similar Questions to those above in the 90's/noughties!

 

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Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

Again, I thought we were promised, repeatedly over the passed 3 decades that there'd be no 'Methane Bomb'?

1646257043120-screen-shot-2022-03-02-at-
WWW.VICE.COM

Up to a trillion tons of methane, a powerful greenhouse gas, may be locked away in the decaying ocean floor of a vast Arctic continental shelf.

 

 

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