Comprehensive aerosol measurements were collected as a part of interdisciplinary North Atlantic Aerosol and Marine Ecosystem Study (NAAMES). The four NAAMES research cruises measured aerosol particle properties on the R/V Atlantis in the North Atlantic Ocean in 2015 (6 November to 1 December), 2016 (11 May to 5 June), 2017 (30 August to 24 September), and 2018 (20 March to 13 April). The particle mass concentration, size distribution, and chemical composition of atmospheric aerosols were measured during both cruises. Ambient air containing marine aerosols up to several micrometers was sampled using a common inlet about 18 m above sea level. These aerosols were dried in diffusion driers before distribution to the instruments. Particles were also sampled from the Sea Sweep operated by NOAA Pacific Marine Environmental Laboratory (PMEL) [Bates et al. 2012 ]. Ambient and sea sweep particles were collected with a temperature controlled vertical inlet at ~15 m above sea level [Betha et al. 2017].
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