1. School of Earth and Environmental Sciences, University of St Andrews, St Andrews, UK.
2. Laboratoire des Sciences du Climat et de l’Environnement (LSCE/IPSL), Université Paris-Saclay, Gif-sur-Yvette, France.
3. Department of Atmospheric Sciences, University of Washington, Seattle, WA 98195, USA.
4. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093, USA.
5. Department of Anthropology, University of Washington, Seattle, WA 98195, USA.
6. Department of Earth System Science, University of California, Irvine, Irvine, CA 92697, USA.
7. Department of Earth Sciences, University of California, Riverside, Riverside, CA 92521, USA.