scholarly article
author: Nicolas Bellouin, Harri Kokkola, Kai Zhang, Kostas Tsigaridis, Toshihiko Takemura, Philip Stier, Zak Kipling, Xiaohong Liu, Ragnhild B. Skeie, Steven J. Ghan, Knut von Salzen, Øyvind Seland, Alf Kirkevåg, Tommi Bergman, Twan van Noije