An important contribution to springtime Arctic aerosol from biomass burning in Russia.

Warnecke, C.; Froyd, K.D.; Brioude, J.; Bahreini, R.; Brock, C.A.; Cozic, J.; De Gouw, J.A.; Fahey, D.W.; Ferrare, R.A.; Holloway, J.; Middlebrook, A.M.; Miller, L.; Montzka, S.A.; Schwarz, J.P.; Spackman, J.R.; Stohl, A.