During the #LastInterglacialPeriod (Marine Isotope Stage 5e ~129-116ka), the global air temp was +0.5-1.5°C warmer than #preindustrial, but the global sea level was 5-10m higher then today! So where did the water come from? 2/9

We used #PopGen and found population connectivity between Ross Sea and Weddell Sea in an #Antarctic #octopus, and dated it back to #LastInterglacialPeriod. This is only possible if #WestAntarcticIceSheet completely collapsed and opened seaway connecting 2 basins 🧵/9

Hello Mastodon!

We present #genomic evidence showing the West Antarctic Ice Sheet collapsed during the #LastInterglacialPeriod!🇦🇶🌊🚨#popgen #icesheet #interdisciplinary

...the tipping point of future #WestAntarcticIceSheet collapse could be reached even under the #ParisAgreement (+1.5-2.0°C)

https://www.biorxiv.org/content/10.1101/2023.01.26.525648v1