1. Scripps College Claremont CA USA
2. Institute for Marine and Antarctic Studies University of Tasmania Hobart Tasmania Australia
3. Now at Department of Earth System Science Stanford University Stanford CA USA
4. Norwegian Polar Institute Tromsø Norway
5. Laboratoire d'Océanographie et du Climat (LOCEAN) Paris France
6. Department of Analytical, Environmental and Geo‐Chemistry and Earth System Sciences Vrije Universiteit Brussel Brussels Belgium
7. Antarctic Climate and Ecosystems Cooperative Research Centre University of Tasmania Hobart Tasmania Australia
8. Australian Antarctic Division Department of the Environment and Energy Kingston Tasmania Australia