Thousands of underground gas bubbles poised to 'explode' in Arctic

Re:Thousands of underground gas bubbles poised to 'explode' ... by xg15 on Friday March 24, 2017 @10:58AM (#13949306)

> Third, it's possible to drop global temperatures in a few months' time if direly needed. Ranging from orbital sunshades to tropospheric aerosols, solutions can be cheap and easy to deploy.

(Emphasis mine)

Isn't that basically the "chemtrails" conspiracy theory? The irony would be pretty entertaining if we ended up actually realizing that to combat climate change.

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Re:Thousands of underground gas bubbles poised to 'explode' ... by stillsut on Friday March 24, 2017 @01:03PM (#13950384)

No, contrails are condensed water vapor, and they are shortlived enough they contribute ~.0001% warming effect observed.

Aerosols, usually a sulfate, are particles, which block sunlight, like the ash from volcanic eruptions. Most eruptions put the ash into the troposphere where it sinks to Earth relatively quickly. By placing sulfates into the stratosphere, they become 100x longer lived, and thus a small amount can have a strong cooling effect.

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