1. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany; Chinese Academy of Sciences; Beijing China
2. Geological Institute; ETH Zürich; Zürich Switzerland
3. Department of Environmental Science and Analytical Chemistry (ACES) and the Bolin Centre for Climate Research; Stockholm University; Stockholm Sweden
4. Woods Hole Research Center; Falmouth Massachusetts USA
5. Department of Earth Sciences; Utrecht University; Utrecht Netherlands
6. Arctic Centre; University of Groningen; Groningen Netherlands
7. School of Earth, Atmospheric and Environmental Sciences (SEAES) and the Williamson Research Centre for Molecular Environmental Science; University of Manchester; Manchester UK
8. International Arctic Research Center (IARC); University of Alaska Fairbanks; Fairbanks Alaska USA
9. Pacific Oceanological Inst.; Russian Academy of Sciences, Far Eastern Branch (FEBRAS); Vladivostok Russia
10. Institute of Natural Resource; National Research Tomsk Polytechnic University; Tomsk Russia
11. 7137 Wallace Dr.; Brentwood Bay British Columbia Canada
12. Department of Fisheries and Oceans; Institute of Ocean Sciences; Sidney British Columbia Canada
13. Laboratory of Ion Beam Physics (LIP); ETH Zürich; Zürich Switzerland
14. Department of Marine Chemistry and Geochemistry; Woods Hole Oceanographic Institution; Woods Hole Massachusetts USA