anlomedad<p>A new paper on <a href="https://climatejustice.social/tags/AMOC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AMOC</span></a> </p><p>Prose summary by the authors <a href="https://theconversation.com/meltwater-from-greenland-and-the-arctic-is-weakening-ocean-circulation-speeding-up-warming-down-south-238302" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">theconversation.com/meltwater-</span><span class="invisible">from-greenland-and-the-arctic-is-weakening-ocean-circulation-speeding-up-warming-down-south-238302</span></a></p><p>Free ePDF <a href="https://www.nature.com/articles/s41561-024-01568-1.epdf?sharing_token=O3cvnzvEWDHiaPGAV-CB3dRgN0jAjWel9jnR3ZoTv0M2PsD_MIel1A6mz6UbuhaTQSv4VfXkSU9okrbFGA0gy1etRpvwJw0P0tMsHg9ro8Nv1h-GiKg-3Km08jevWj3MVZ6uFzlIrUTv-X1bF8I0K8crc3qdtYsHtgUTx9fE2Zc%3D" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41561-024</span><span class="invisible">-01568-1.epdf?sharing_token=O3cvnzvEWDHiaPGAV-CB3dRgN0jAjWel9jnR3ZoTv0M2PsD_MIel1A6mz6UbuhaTQSv4VfXkSU9okrbFGA0gy1etRpvwJw0P0tMsHg9ro8Nv1h-GiKg-3Km08jevWj3MVZ6uFzlIrUTv-X1bF8I0K8crc3qdtYsHtgUTx9fE2Zc%3D</span></a></p><p>actual paper <a href="https://www.nature.com/articles/s41561-024-01568-1" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41561-024</span><span class="invisible">-01568-1</span></a> <a href="https://climatejustice.social/tags/Pontes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Pontes</span></a> et al 2024</p><p>tldr: by adjusting <a href="https://climatejustice.social/tags/Greenland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Greenland</span></a> meltrate to actually observed accelerated rate which is underestimated in standard climate models, they are now able to explain the observed increase in SST and salinity in the South <a href="https://climatejustice.social/tags/Atlantic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atlantic</span></a> with a slowdown of the AMOC in the past decades , matching the slowdown rate calculated by <a href="https://climatejustice.social/tags/Rahmstorf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Rahmstorf</span></a> 's former PhD student <a href="https://climatejustice.social/tags/Caesar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Caesar</span></a> 2018.<br>If you recall, that's the latitude in the S-Atlantic that <a href="https://climatejustice.social/tags/vanWesten" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vanWesten</span></a> etal 2024 found as prime location for early warning signal of an imminent AMOC collapse in their freshwater experiment.</p><p>By applying melt (but without the observed AND projected acceleration that <a href="https://climatejustice.social/tags/Greene" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Greene</span></a> et al 2024 notify us of <a href="https://www.nature.com/articles/s41586-023-06863-2" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41586-023</span><span class="invisible">-06863-2</span></a> ), Pontes' model now projects a total slowdown of 30% by 2040.<br>(Also noteworthy maybe that the authors pull the 2degree milestone forward to 2040, while some papers I read in 2018 still saw 2C sometime in the 2050s. But they're not the first researchers doing so that I came across.)</p><p>Meltrate in Greenland is 30Mt of ice per hour... Did you know that 1kg of pizza equals 19kg CO2 which ultimately melts 12.3 t glacial ice? <br>1 cup of coffee is 400gr CO2 and melts 260 kg. (sources see #2)</p><p>Meanwhile, <a href="https://climatejustice.social/tags/COP29" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>COP29</span></a> news falsely report a global consensus in coal phase-out. A journalist on Bluesky dug into the actual agreement and the countries listed. <br>First, it's not a global agreement. <br>Then either, the countries have no coal energy, or they have already long ago planned the phaseout so nothing new from them, either. <br>The single country with a new development in this coal agreement is Australia which announced to close 3 coal power plants ... sometime in the future...</p>