Callaghan, Terry V.; Johansson, Margareta; Brown, Ross D.; Groisman, Pavel Ya; Labba, Niklas; Radionov, Vladimir; Barry, Roger G.; Bulygina, Olga N.; Essery, Richard L. H.; Frolov, D. M.; Golubev, Vladimir N.; Grenfell, Thomas C.; Petrushina, Marina N.; Razuvaev, Vyacheslav N.; Robinson, David A.; Romanov, Peter; Shindell, Drew; Shmakin, Andrey B.; Sokratov, Sergey A.; Warren, Stephen; Yang, Daquing