ASCOS was an interdisciplinary expedition to the central Arctic on the icebreaker Oden from 1 August to 9 September 2008. The expedition focused on processes relating to cloud formation in the summer Arctic and included observations of marine biology and chemistry, atmospheric chemistry, physical oceanography, aerosol chemistry and physics, and meteorology. This data set includes results from ... cluster analysis of mass spectrometric measurements of single particles. The analyzed mass spectra were obtained by Aerosol Time-Of-Flight Mass Spectrometry (ATOFMS) of particles with diameters between approx. 250-3000nm, collected through the main inlet of the aerosol container onboard the RV Oden. The data is broken into sets of the three main measurement stations, a) the Open Water Station (OW), b) the Marginal Ice Zone (MIZ) station, and c) the Ice Floe (IF) Station. The mass spectra of the individual particles were clustered by an artificial intelligence network Art-2a
into particle types of similar elemental composition. These particle clusters are given herein.