In a paper published in Nature Communications lead by Jacob Howe (University of Cambridge, UK), the authors were able to demonstrate a sustained production of North Atlantic Deep Water during the Last Glacial Maximum. This indicates that the northward and upward penetration of southern-sourced deep waters were not as extensive as previously thought. The authors (among them Prof. Dr. Cristiano M. Chiessi, from the P2L) used neodymium isotopes analyzed on foraminiferal shells to map the spatial distribution of the main water masses filling the Atlantic Ocean during the Last Glacial Maximum. By doing this, they were able to show that the sluggish deep overturning in the Atlantic was very likely the primary storage volume for much of the glacial CO2. To read the full paper, please click here.