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The Methane Thread pt. 2

Re: The Methane Thread pt. 2

Unread postby Whitefang » Tue 25 Dec 2018, 07:57:19

dohboi wrote:Satellite spies methane bubbling up from Arctic permafrost
Radar instrument aboard a Japanese probe can spot signs of gas seeping from lakes that form as the ground thaws.
In a 2,000-square-kilometre area around the Barrow Peninsula in northern Alaska, for instance, the team calculated that lakes release an average of 0.6 grams of methane per square metre of water surface each year — which equates to around 141 kilograms of methane per square kilometre. That is about 84% lower than some previous estimates based on measurements at individual lakes, Engram says, but lines up well with estimates based on atmospheric measurements.

Copernicus and Metop 1 and 2 do a fine job monitoring the various gasses and particles in what is above, explained in two youtubes by Paul B:

Just a new part on the cascading tipping points:

Better to just watch the video.....
The potential for regime shifts and critical transitions in ecological and Earth systems, particularly in a changing climate, has received considerable attention. However, the possibility of interactions between such shifts is poorly understood. Rocha et al. used network analysis to explore whether critical transitions in ecosystems can be coupled with each other, even when far apart (see the Perspective by Scheffer and van Nes).
‘They report different types of potential cascading effects, including domino effects and hidden feedbacks, that can be prevalent in different systems. Such cascading effects can couple the dynamics of regime shifts in distant places, which suggests that the interactions between transitions should be borne in mind in future forecasts.
‘Abstract: Regime shifts are large, abrupt, and persistent critical transitions in the function and structure of ecosystems. Yet, it is unknown how these transitions will interact, whether the occurrence of one will increase the likelihood of another or simply correlate at distant places. We explored two types of cascading effects: Domino effects create one-way dependencies, whereas hidden feedbacks produce two-way interactions.
‘We compare them with the control case of driver sharing, which can induce correlations. Using 30 regime shifts described as networks, we show that 45% of regime shift pairwise combinations present at least one plausible structural interdependence. The likelihood of cascading effects depends on cross-scale interactions but differs for each type. Management of regime shifts should account for potential connections‘.

Here you go, found the YouTube by scrolling down from Paul his site, 2 youtubes with info and data that indeed, the methane sources can be found by looking at the surface concentration or taking the 1000 mbar readings, where it goes in the atmosphere and even some above can be tracked by looking at the concentrations at various airpressures, altitude.
No more mystery, we can see where the methane comes from and where it is going, even where it is dying as in falling apart into CO2 and water, way up above close to heaven…..
Seems the reservoir under the land and sea permafrost is leaking but not the 50 Gton yet.

Nova Zembla used to be the barrier of the warm/wet golfstreamwinds and the polar cold and dry front, now the last 2 years, that front shifted to the end of the world, Yamal peninsula. With other words, the Kara sea has been lost to juicy warmth from the south.
Franz Joseph islands barely enclosed by the sea ice pack, Nova Zembla just the east coast of the Northern Island, Spitsbergen still free..... ... R2_nic.png ... 768,73.712

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Re: The Methane Thread pt. 2

Unread postby dohboi » Thu 27 Dec 2018, 14:44:07

[Seabed] Methane Gas Triggered Tsunami Fires After 1993 Japan Earthquake, Scientist Says ... earthquake

Fires that consumed a Japanese port in the wake of a 1993 earthquake-triggered tsunami were likely caused by methane gas released from the seabed during the tremor, a Japanese scientist said.

On July 12, 1993, a magnitude 7.8 earthquake struck in the Sea of Japan, triggering a tsunami that crashed into Hokkaido and Okushiri islands in northern Japan, according to the U.S. Geographical Survey. As the monster wave hit the smaller outlying Okushiri, at least five boats moored in the island's Aonae Harbor simultaneously burst into flames. The tsunami waves and high winds drove the flames inland, where numerous buildings in the port were consumed by the fires.

Enomoto noted that with the amount of methane gas buried beneath the seafloor off the coast of Japan, further analysis is needed to heed off potentially disastrous consequences from methane gas-triggered fires should disaster strike again.
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