Modelled black carbon radiative forcing and atmospheric lifetime in AeroCom Phase II constrained by aircraft observations by Samset, B, Myhre, G, Herber, A, Kondo, Y, Li, S, Moteki, N, Koike, M, Oshima, N, Schwarz, J, Balkanski, Y, Bauer, SE, Bellouin, N, Berntsen, T, Bian, H, Chin, M, Diehl, T, Easter, R, Ghan, S, Iversen, T, Kirkevag, A, Lamarque, J, Lin, G, Liu, X, Penner, J, Schulz, M, Seland, O, Skeie, R, Stier, P, Takemura, T, Tsigaridis, K, Zhang, K