[1] Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA
[2] CSIRO Marine & Atmospher Res, Ctr Australian Weather & Climate Res, Aspendale, Vic 3195, Australia
[3] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA
[4] Oregon State Univ, Dept Geosci, Corvallis, OR 97331 USA
[5] Natl Inst Water & Atmospher Res, Wellington, New Zealand
[6] Australian Nucl Sci & Technol Org, Menai, NSW 2234, Australia
[7] Victoria Univ Wellington, Antarctic Res Ctr, Wellington, New Zealand
[8] Lowe NZ, Climate Change Educ & Renewable Energy, Plimmerton Porirua 5026, New Zealand