Stephanie Buchanan 8/27/26 Stephanie Buchanan 8/27/26

The Abyssal Warming Just Gave Us a Treasure Map

I couldn’t match the abyssal warming acceleration pattern to known geothermal and hydrothermal features, but our dataset is extremely sparse. So, I worked backwards starting at the pattern to find where the geothermal and hydrothermal features would have to be and how strong they would have to be.

Stephanie Buchanan 8/18/26 Stephanie Buchanan 8/18/26

Can Heat From Below Explain the Abyssal Warming Acceleration?

A constant heat source can cause warming, but an acceleration needs either a changing source or changing heat delivery. Most of the direct geothermal fingerprints are weak, so I’m down to the circulation question.

Stephanie Buchanan 8/14/26 Stephanie Buchanan 8/14/26

Antarctic Bottom Water doesn’t fully explain the deep ocean warming acceleration

Antarctic Bottom Water initially looked like a really good match to the abyssal warming signal. Then, I calculated how much acceleration the overturning circulation can actually supply…

Stephanie Buchanan 8/13/26 Stephanie Buchanan 8/13/26

I Finally Got the Ocean Into the Solver

For the real SWARM forcing I’m testing here, I get about 56.0% of the dissipated power in the ocean and 44.0% in the solid Earth.

Stephanie Buchanan 8/11/26 Stephanie Buchanan 8/11/26

Could the Deep Ocean Be Warming Because Its Layers Are Moving?

When I followed deep ocean density layers instead of fixed depth, the stable part of the record matched the observed abyssal warming surprisingly well. Then, we ran out of data.