Long-term trends of black carbon and particle number concentration in the lower free troposphere in Central Europe
Jia Sun, M. Hermann, Ye Yuan, W. Birmili, M. Collaud Coen, K. Weinhold, Leizel Madueño, L. Poulain, T. Tuch, L. Ries, R. Sohmer, C. Couret, G. Frank, B. Brem, M. Gysel-Beer, N. Ma, A. Wiedensohler
Environmental Sciences Europe