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Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS

The remote central Arctic during summertime has a pristine atmosphere with very low aerosol particle concentrations. As the region becomes increasingly ice-free during summer, enhanced ocean-atmosphere fluxes of aerosol particles and precursor gases may therefore have impacts on the climate. However...

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Autores principales: Siegel, Karolina, Karlsson, Linn, Zieger, Paul, Baccarini, Andrea, Schmale, Julia, Lawler, Michael, Salter, Matthew, Leck, Caroline, Ekman, Annica M. L., Riipinen, Ilona, Mohr, Claudia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8262249/
https://www.ncbi.nlm.nih.gov/pubmed/34278305
http://dx.doi.org/10.1039/d0ea00023j
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author Siegel, Karolina
Karlsson, Linn
Zieger, Paul
Baccarini, Andrea
Schmale, Julia
Lawler, Michael
Salter, Matthew
Leck, Caroline
Ekman, Annica M. L.
Riipinen, Ilona
Mohr, Claudia
author_facet Siegel, Karolina
Karlsson, Linn
Zieger, Paul
Baccarini, Andrea
Schmale, Julia
Lawler, Michael
Salter, Matthew
Leck, Caroline
Ekman, Annica M. L.
Riipinen, Ilona
Mohr, Claudia
author_sort Siegel, Karolina
collection PubMed
description The remote central Arctic during summertime has a pristine atmosphere with very low aerosol particle concentrations. As the region becomes increasingly ice-free during summer, enhanced ocean-atmosphere fluxes of aerosol particles and precursor gases may therefore have impacts on the climate. However, large knowledge gaps remain regarding the sources and physicochemical properties of aerosols in this region. Here, we present insights into the molecular composition of semi-volatile aerosol components collected in September 2018 during the MOCCHA (Microbiology-Ocean-Cloud-Coupling in the High Arctic) campaign as part of the Arctic Ocean 2018 expedition with the Swedish Icebreaker Oden. Analysis was performed offline in the laboratory using an iodide High Resolution Time-of-Flight Chemical Ionization Mass Spectrometer with a Filter Inlet for Gases and AEROsols (FIGAERO-HRToF-CIMS). Our analysis revealed significant signal from organic and sulfur-containing compounds, indicative of marine aerosol sources, with a wide range of carbon numbers and O : C ratios. Several of the sulfur-containing compounds are oxidation products of dimethyl sulfide (DMS), a gas released by phytoplankton and ice algae. Comparison of the time series of particulate and gas-phase DMS oxidation products did not reveal a significant correlation, indicative of the different lifetimes of precursor and oxidation products in the different phases. This is the first time the FIGAERO-HRToF-CIMS was used to investigate the composition of aerosols in the central Arctic. The detailed information on the molecular composition of Arctic aerosols presented here can be used for the assessment of aerosol solubility and volatility, which is relevant for understanding aerosol–cloud interactions.
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spelling pubmed-82622492021-07-16 Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS Siegel, Karolina Karlsson, Linn Zieger, Paul Baccarini, Andrea Schmale, Julia Lawler, Michael Salter, Matthew Leck, Caroline Ekman, Annica M. L. Riipinen, Ilona Mohr, Claudia Environ Sci Atmos Chemistry The remote central Arctic during summertime has a pristine atmosphere with very low aerosol particle concentrations. As the region becomes increasingly ice-free during summer, enhanced ocean-atmosphere fluxes of aerosol particles and precursor gases may therefore have impacts on the climate. However, large knowledge gaps remain regarding the sources and physicochemical properties of aerosols in this region. Here, we present insights into the molecular composition of semi-volatile aerosol components collected in September 2018 during the MOCCHA (Microbiology-Ocean-Cloud-Coupling in the High Arctic) campaign as part of the Arctic Ocean 2018 expedition with the Swedish Icebreaker Oden. Analysis was performed offline in the laboratory using an iodide High Resolution Time-of-Flight Chemical Ionization Mass Spectrometer with a Filter Inlet for Gases and AEROsols (FIGAERO-HRToF-CIMS). Our analysis revealed significant signal from organic and sulfur-containing compounds, indicative of marine aerosol sources, with a wide range of carbon numbers and O : C ratios. Several of the sulfur-containing compounds are oxidation products of dimethyl sulfide (DMS), a gas released by phytoplankton and ice algae. Comparison of the time series of particulate and gas-phase DMS oxidation products did not reveal a significant correlation, indicative of the different lifetimes of precursor and oxidation products in the different phases. This is the first time the FIGAERO-HRToF-CIMS was used to investigate the composition of aerosols in the central Arctic. The detailed information on the molecular composition of Arctic aerosols presented here can be used for the assessment of aerosol solubility and volatility, which is relevant for understanding aerosol–cloud interactions. RSC 2021-03-15 /pmc/articles/PMC8262249/ /pubmed/34278305 http://dx.doi.org/10.1039/d0ea00023j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Siegel, Karolina
Karlsson, Linn
Zieger, Paul
Baccarini, Andrea
Schmale, Julia
Lawler, Michael
Salter, Matthew
Leck, Caroline
Ekman, Annica M. L.
Riipinen, Ilona
Mohr, Claudia
Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS
title Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS
title_full Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS
title_fullStr Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS
title_full_unstemmed Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS
title_short Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS
title_sort insights into the molecular composition of semi-volatile aerosols in the summertime central arctic ocean using figaero-cims
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8262249/
https://www.ncbi.nlm.nih.gov/pubmed/34278305
http://dx.doi.org/10.1039/d0ea00023j
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