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PoliticalHierarchy77 t1_j12khoh wrote

Reply to comment by WalterWoodiaz in Greenland's glaciers are melting 100 times faster than estimated by strangeattractors

Yet more research suggesting the effects of climate change has been underestimated. This time the Greenland ice sheets may be melting at 100 times faster than previously modelled.

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clampie t1_j12l5w7 wrote

It also suggests bad math. And the increase in underglacier volcanic activity matters a little bit, perhaps.

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ChalupaCabre t1_j12o5gk wrote

Documentaries I have seen say the old models didn’t include everything they are seeing today.. there are lots of positive feedback loops created that either couldnt be included in modeling or they just didn’t know to include.

Something like all the methane gas released from melting permafrost, which accelerates climate change, which accelerates climate change…etc.

Old model rendered completely too conservative.

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ialsoagree t1_j13q37s wrote

Volcanic activity is not a significant cause of glacial loss in the Antarctic, there are no active volcanoes at all in Greenland.

https://climate.nasa.gov/ask-nasa-climate/2982/fire-and-ice-why-volcanic-activity-is-not-melting-the-polar-ice-sheets/

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Human_Anybody7743 t1_j13snbf wrote

The volcanoes are doing everything bad myth comes from a cult started by a Ukranian chiropractor and is funded by a bunch of right wing think tanks.

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clampie t1_j14bsif wrote

Underground activity is important. Japanese researchers discovered major plumes under Greenland in 2020.

- A hot plume (Greenland plume) rising from the core-mantle boundary beneath central Greenland is discovered.

- The Iceland and Greenland plumes are connected and supplying magmas to Iceland, Jan Mayen, and Svalbard hotspots.

https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JB019839

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ialsoagree t1_j14ck7i wrote

That plume has existed for millions of years. It's cooling.

In fact, that very research you cited even states that the heat from the plume is feeding the Iceland plume, which is why Iceland has over 100 volcanoes, and over a third of them are active volcanoes (have erupted in the part 50,000 years). Greenland has no active volcanoes at all.

Volcanic activity and heat plumes function over geological time scales. That plume under Greenland was hotter when the ice formed than it is today.

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clampie t1_j14f6sj wrote

We just learned about it. And it creates hot spots. lol

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ialsoagree t1_j14ff2b wrote

We've known that there was a hot spot under Greenland for a very long time. We didn't know that it was still active, which is what the research you're citing confirms.

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clampie t1_j14fm7m wrote

No, we didn't know.

If it's hot enough to melt rocks, it's hot enough to melt ice.

The researchers didn't show up and discover nothing.

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ialsoagree t1_j14i9ci wrote

If we didn't know, how did the page I linked to, published before your paper, talk about a hot spot in Greenland?

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