Springtime Arctic aerosol: Smoke versus haze, a case study for March 2008

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Stock, M. , Ritter, C. , Herber, A. , von Hoyningen-Huene, W. , Baibakov, K. , Graeser, J. , Orgis, T. , Treffeisen, R. , Zinoviev, N. S. and Makshtas, A. (2011): Springtime Arctic aerosol: Smoke versus haze, a case study for March 2008 , Atmospheric Environment, 48 . doi: 10.1016/j.atmosenv.2011.06.051
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During March 2008 photometer observations of Arctic aerosol were performed both at a Russian ice-floe drifting station (NP-35) at the central Arctic ocean (56.7e42.0 E, 85.5e84.2 N) and at Ny-Ålesund, Spitsbergen (78.9 N, 11.9 E). Next to a persistent increase of AOD over NP-35, two pronounced aerosol events have been recorded there, one originating from early season forest fires close to the city of Khabarovsk (“Arctic Smoke”), the other one showed trajectories from central Russia and resembled more the classical Arctic Haze. The latter event has also been recorded two days later over Ny-Ålesund, both in photometer and lidar. From these remote sensing instruments volume distribution functions are derived and discussed. Only subtle differences between the smoke and the haze event have been found in terms of particle microphysics. Different trajectory analysis, driven by NCEP and ECMWF have been performed and compared. For the data set presented here the meteorological field, due to sparseness of data in the central Arctic, mainly limits the precision of the air trajectories.

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