10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
New Insight Into Arctic Atmospheric Aerosol Formation
LISA BECK, Clemence Rose, Ella-Maria Duplissy, Matthieu Riva, Federico Bianchi, Olga Garmash, Heikki Junninen, Clara Hoppe, Alexander Schulz, Viola Angelo, Vitto Vitale, Mauro Mazzola, David Cappelletti, Markku Kulmala, Veli-Matti Kerminen, Mikko Sipilä, University of Helsinki
Abstract Number: 763 Working Group: Aerosol Physics
Abstract Particle formation is globally contributing approximately 50% of cloud condensation nuclei. With increasing temperature, the emission of gases from the different spheres, like hydrosphere, biosphere but also the fauna, is changing; consequently, the molecular composition of the atmosphere is changing. To understand the extent to which the temperature rise and sea ice loss may contribute to future cloud formation and radiation feedback, we must know the mechanisms of particle formation. Therefore, we conducted a field campaign from March to August 2017 in Ny Ålesund, Svalbard at 79° N. Mass spectrometers were among the key instrumentation for solving the molecular mechanism of particle formation. In our campaign, we were able to solve the role of sulfuric acid, ammonia, amines, iodic acid, methane sulfonic acid, highly oxidized organic molecules as well as ions in new particle formation. To understand the effect of changing temperature on particle formation requires accounting for all different spheres. Based on our results, for example, we expect that changes in phytoplankton phenology and sea ice extent will greatly affect aerosol formation in those regions. This study aims to combine all the components related to gas-to-particle conversion necessary for predicting future behaviour of arctic clouds and climate.