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zipperlip

30,337 Posts.

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05/09/24

13:15

Post #: 75542676
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Originally posted by greenhart ↑

The point about the Tonga eruption originally made by walbrook was that in 2022, up to 150 million tonnes of water vapour were emitted into the stratosphere, something like 10% of the total water vapour in the atmosphere. This is much, much larger than the "average" undersea volcano.

It also coincided with a large spike in UAH global temperature from 2023 until now.

Having Googled it a bit all I have found is that scientists have estimated the increase in WV due to the eruption would cause something like 0.05 - 0.08 C increase in GT for 2-3 years. The current anomaly is over 0.8 C.

WUWT, the sceptic's go-to site just points it out as a possibility i.e. correlation means causation - but I've yet to see any which propose that it could cause a 0.5 C increase.

And the water was in the stratosphere, and whether it acts as the same GHG there as in the troposphere - who knows?

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