Size distribution, mixing state and source apportionment of black carbon aerosol in London during wintertime

- D. Liu1, J. D. Allan1,6, D. E. Young1, H. Coe1, D. Beddows4, Z. L. Fleming2, M. J. Flynn1, M.W. Gallagher1, R. M. Harrison4,7, J. Lee3, A. S. H. Prevot5, J. W. Taylor1, J. Yin4, P. I.Williams1,6, and P. Zotter5