We tested variations to those, with the effect by 2100 still ranging between 5-15 PgC. Also, the changes in the yearly uptake were not limited by atmospheric CO2, showing independence from the amount of emissions across a range of pathways

Fully agree on the AMOC relevance for ocean carbon uptake! However, our estimation of the potential AMOC weakening carbon-uptake effect this century is one order of magnitude smaller, i.e. ~10 PgC. Still, this would have important climatic and economic implications...
www.pnas.org/doi/10.1073/...

I convene this session together with @felixschaumann.bsky.social, Maya Ben Yami, Amber Boot, & Oliver Mehling, so please ask any of us if you have questions! 😊

We welcome contributions from very broad AMOC impact types (physical, biogeochemical, or socioeconomic), timescales (paleoclimate, recent past, future projections), forcings (variability, forced trends, abrupt/tipping) & tools (Earth System/regional/simple/economic models, reanalyses/observations) 🧪

The paper was led by @andrewkingclimate.bsky.social and included @climatenerilie.bsky.social & Tilo Ziehn 👏🏻

The conference was a great mix between theoretical, modelling, and observational approaches in understanding the role of the ocean in the climate system, as we celebrate the MPI-M 50th anniversary! mpimet.mpg.de/en/communica...

Overall, while the multidecadal changes found here would be smaller than the direct effects from global warming, our study highlights how many of these changes are significant and consistent among different models, while emphasising the global reach of AMOC impacts 💡

(5/5)

We find, as expected, that a weaker AMOC leads to a buildup of heat in the Southern Ocean, warmer temperatures and sea-ice loss 🌡️

More surprisingly, we identify a new tropical-Antarctic atmospheric teleconnection, which explains why there is cooling and sea-ice growth in the Weddell Sea 🏝️🧊

(4/n)

We use the simulations we previously introduced in the NAHosMIP, a multi-model intercomparison of freshwater hosing experiments 🚿 This hosing induces an idealised AMOC weakening so that we can calibrate and separate AMOC impacts

doi.org/10.5194/gmd-...

(3/n)

While several studies have investigated the Southern Ocean response to AMOC changes, the multidecadal Antarctic sea-ice response is still unknown ❓

We investigate Southern Ocean sea ice & temperature changes, along with changes in many drivers, such as heat transport or circulation changes 🔎

(2/n)

🗞️ Read here the press release by CLICCS/@cenunihh.bsky.social: www.cliccs.uni-hamburg.de/about-cliccs... (6/6)