| In July 2002, high-temporal-resolution measurements of the atmospheric aerosol were made near ocean station Papa (50.0° N, 145.0° W) in the Northeast Pacific Ocean, as part of the Sub-Arctic Ecosystem Response to Iron Enrichment Study (SERIES). The atmospheric dimethylsulphide (DMS) and methanesulphonic acid (MSA) concentrations during the study were an order of magnitude higher than the global average, making this an ideal location to study the phytoplankton-DMS-climate feedback hypothesis. This study marks the first time atmospheric measurements have been included in an iron enrichment experiment, and the first time an Aerodyne Aerosol Mass Spectrometer has been deployed in a remote marine setting. Background aerosol mass concentrations and size distributions, along with two episodes of new particle formation and an episode of high organics, are investigated in this thesis. Due to high wind speeds and close proximity to the iron-enriched patch, the patch did not influence the average aerosol composition. |
