#heuze — Public Fediverse posts

Still haven't gotten around comprehending how to convert a lat-lon grid with ice thickness to a correct regional sum of freshwater amount in Gt.

But something else keeps popping up in my head now.
Peltier's ice model / reconstruction (dunno which it is) doesn't include sea ice at all https://www.atmosp.physics.utoronto.ca/~peltier/data.php

Tarasov's GLAC1D model does. https://doi.org/10.5281/zenodo.10159104
At least the melted parts of sea ice is included. But not the ever-lasting part.

That ever-lasting part is melting today, and has been melting for a long while now. But it didn't melt during past AMOC hickups. What melted back then was ice that covered Scotland with a whopping 400m ice wall. And higher ice mountains still melted in other regions. But not sea ice in the Arctic ocean.

...hm. What I really want to know is how the amount of freshwater influx back then
compares to the amount today, and how today's very little left-over ice would be capable of stopping AMOC.

We'll be having a blue Arctic ocean before 2030, says a new study https://www.ft.com/content/63fbcf2b-9acc-4ccb-ac12-9f3b78e85b68

https://www.nature.com/articles/s41467-024-54508-3 #Heuze and #Jahn 2024, "The first ice-free day in the Arctic Ocean could occur before 2030" #openaccess 💃

Wouldn't it be cool to know by then how much ice in kilos or Gt melted ? And how that amount compares to the amount before previous AMOC shutdowns during the LGM and deglaciasation?

#paleoclimate #sealevelrise #GlacierMelt #AMOC #seaice #Arctic