u/CorvidCorbeau

SS: Scientists created an optimized model which describes how microbes produce methane in the global oceans, and their findings warn that the warming oceans will result in less mixing between the surface- and deep waters, creating a phosphate shortage close to the surface, which creates favorable conditions for methane-producing microbes.

Most of the methane produced through this process escapes to the atmosphere, as only ~2% is oxidized in time. Their simulation of future emissions shows that while this source of methane isn't that big (around 2Tg/year) it could almost double in the future under an aggressive global warming scenario.

SS: Related to collapse because well, we all know why. Arctic sea ice is not only decreasing in its extent but also its thickness, which makes it increasingly likely that even a moderate disturbance, such as a lighter heatwave or smaller arctic storms can result in record low ice coverage.

As we can see, we are trending towards the first ice free September in the arctic, maybe not this year, but way sooner than we'd like.