Found the full report : http://digital.library.unt.edu/ark:/67531/metadc12027/m2/1/high_res_d/sap3-4-final-report-all.pdf from which the IPCC draws "...it was very unlikely that such a catastrophic release would occur this century. However, they argued that
anthropogenic warming will very likely lead to enhanced methane emissions from both terrestrial and
oceanic clathrates"

The IPCC on http://journals.ametsoc.org/doi/pdf/10.1175/JCLI3894.1
"While difficult to formally assess, initial estimates of the 21st
century positive feedback from methane clathrate destabilization are small but not insignificant. However, concomitant sea level
rise due to changes in ocean mass enhances clathrate stability in the ocean"

Investigating this has been worthwhile and it appears methane will be the least of our more immediate problems. Some "tipping point" issues may well have taken too much dominance in the headlines, to the detriment of considered thought, but I remain an "alarm sounder" while CO2 levels and global temperature continues to rise, but always hopeful that the outright deniers are fully correct.

Agro I've discussed Meehl to bits here:

http://jennifermarohasy.com/2009/07/solar-cycle-link-to-global-climate-now-something-official/?cp=all

In respect of my error [sic] I say:

"My mistake was reading that to mean that GHGs extended what would have been a naturally short -ve PDO; what Meehl is really saying is that despite the veneer of natural variability, if it wasn’t for the [inherent] natural variability dominating [or in Keenlyside terminology 'masking'] the GHG forcing the GHG forcing would have produced the GPCS much earlier; that is, if everything wasn’t behaving naturally then things would be unnatural due to AGW."

Ant; Arctic:

2013-2014 ice is accumulating at record rates:

http://stevengoddard.wordpress.com/2013/02/12/most-ice-gain-ever-recorded/

http://wattsupwiththat.com/2014/02/05/cryosat-shows-arctic-sea-ice-volume-up-50-from-last-year/

The prediction was that the Arctic would be ice-free by 2013:

http://theclimatescepticsparty.blogspot.com.au/2013/08/alarmists-wrongdare-i-say-itagain.html

The fact is 1979 was a high point for Arctic ice in the 20thC with a decline since, although not below 1974 levels.

Luci; I referred to the IPCC only to show that when it suits alarmists they ignore their own authoritative source of information.

cohenite, like I said before graphs are meaningless when stacked up against animations using past data. There are seasonal variations, and the ice sheet in the Arctic did extend further in 2013 than 2012. But the ice is thinner and less stable. Climate scientists use the longest possible trend as possible; whereas deniers tend to use a short meaningless time scale.
You didn't comment on the epidemiological studies; those being a kind of secondary proof climate change is happening. cohenite, are you going to argue against what is written in The Lancet? What about the Greenland farmer in a film clip I gave a reference to, who was looking forward to further warming, so he could grow a wider range of vegies.
Climate change is not academic to the Inuit, they comment about living the experience. No graphs are going to convince them otherwise.
The references you use I'm afraid cohenite are not reliable; for example, Watts does not have any professional qualification, he left University before obtaining a degree.
If you had a look at an earlier clip about Monckton, you would realize that pretty well everything he stated was rubbish, his arguments were forensically pulled apart. Some of the graph material he used conventiently missed out detail, or did not show a reasonable time frame. Monckton made a claim that his work has been referenced, when in fact it was merely edited. There are natural variations in climate and a decade is not enough time to show a trend.
You need to be careful about the date of references you use, there are many current papers that give an indication about the here and now; especially in relation to methane and methane hydrate. Miriam Karstan has provided a excellent study on methane /methane hydrates how they react when pressure is taken off them, and has show that underwater landslides can occur through this process. Temperature is one of the pressures that maintain stability of methane/methane hydrates deposites

http://methane-hydrates.blogspot.com.au/p/myths.html
Continued:

cohenite:
Please debunk my epidemiological references; you didn't when asked previously. Please tell us as well, why the Inuit have it wrong in relation to their climate changing. Has Tuvalu flooded or not?

If you are not able to put forward anything it just makes the point that climate change deniers are not able to tackle matters head on.
Please also tackle the methane matter in relation to 2014, high levels have been recorded; no theory, models, graphs involved.

ant, I'm not going to waste my time pouring over Lancet articles when the rag is a devout supporter of this nonsense.

AGW has been blamed for every bad thing under the sun I guess the spread of ticks to Sweden is merely grist for the mill; as you can see your ticks have already made the list:

http://www.numberwatch.co.uk/warmlist.htm

Nothing is going to make you change your mind; humans are destroying the world and that's your position.

continued
cohenite, you haven't answered the specific questions around epidemiological matters I raised. Do you have data that debunks the Lancet article I mentioned?
The Inuit who live in sub Polar areas acknowledge climate change is happening.
In one of the clips I have previously provided, a Greenland farmer was happy about climate change as he felt he could grow a greater range of vegies. How did he come by that attitude?
Has Tuvalu been flooded?
Animations of photos taken from satellites show a huge decrease in the Arctic ice sheets. Graphs just don't hit the mark against real data put together in the form of an animation.

Please respond to these matters; rather than provide irrelevant references.

Methane has been increasing as measured in 2014; if you have evidence to suggest otherwise bring forward a 2014 reference.