Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere
The ability of atmospheric aerosols to impact climate through water uptake and cloud formation is fundamentally determined by the size, composition, and phase (liquid, semisolid, or solid) of individual particles. Particle phase is dependent on atmospheric conditions (relative humidity and temperatu...
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Online Access: | http://www.osti.gov/servlets/purl/1860633 https://www.osti.gov/biblio/1860633 https://doi.org/10.1073/pnas.2104496119 |
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ftosti:oai:osti.gov:1860633 2023-07-30T04:00:54+02:00 Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere Kirpes, Rachel M. Lei, Ziying Fraund, Matthew Gunsch, Matthew J. May, Nathaniel W. Barrett, Tate E. Moffett, Claire E. Schauer, Andrew J. Alexander, Becky Upchurch, Lucia M. China, Swarup Quinn, Patricia K. Moffet, Ryan C. Laskin, Alexander Sheesley, Rebecca J. Pratt, Kerri A. Ault, Andrew P. 2022-04-28 application/pdf http://www.osti.gov/servlets/purl/1860633 https://www.osti.gov/biblio/1860633 https://doi.org/10.1073/pnas.2104496119 unknown http://www.osti.gov/servlets/purl/1860633 https://www.osti.gov/biblio/1860633 https://doi.org/10.1073/pnas.2104496119 doi:10.1073/pnas.2104496119 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.1073/pnas.2104496119 2023-07-11T10:11:30Z The ability of atmospheric aerosols to impact climate through water uptake and cloud formation is fundamentally determined by the size, composition, and phase (liquid, semisolid, or solid) of individual particles. Particle phase is dependent on atmospheric conditions (relative humidity and temperature) and chemical composition and, importantly, solid particles can inhibit the uptake of water and other trace gases, even under humid conditions. Particles composed primarily of ammonium sulfate are presumed to be liquid at the relative humidities (67 to 98%) and temperatures (–2 to 4 °C) of the summertime Arctic. Under these atmospheric conditions, we report the observation of solid organic-coated ammonium sulfate particles representing 30% of particles, by number, in a key size range (<0.2 µm) for cloud activation within marine air masses from the Arctic Ocean at Utqiagvik, AK. The composition and size of the observed particles are consistent with recent Arctic modeling and observational results showing new particle formation and growth from dimethylsulfide oxidation to form sulfuric acid, reaction with ammonia, and condensation of marine biogenic sulfate and highly oxygenated organic molecules. Aqueous sulfate particles typically undergo efflorescence and solidify at relative humidities of less than 34%. Therefore, the observed solid phase is hypothesized to occur from contact efflorescence during collision of a newly formed Aitken mode sulfate particle with an organic-coated ammonium sulfate particle. With declining sea ice in the warming Arctic, this particle source is expected to increase with increasing open water and marine biogenic emissions. Other/Unknown Material Arctic Arctic Ocean Sea ice SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic Arctic Ocean Proceedings of the National Academy of Sciences 119 14 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Kirpes, Rachel M. Lei, Ziying Fraund, Matthew Gunsch, Matthew J. May, Nathaniel W. Barrett, Tate E. Moffett, Claire E. Schauer, Andrew J. Alexander, Becky Upchurch, Lucia M. China, Swarup Quinn, Patricia K. Moffet, Ryan C. Laskin, Alexander Sheesley, Rebecca J. Pratt, Kerri A. Ault, Andrew P. Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
The ability of atmospheric aerosols to impact climate through water uptake and cloud formation is fundamentally determined by the size, composition, and phase (liquid, semisolid, or solid) of individual particles. Particle phase is dependent on atmospheric conditions (relative humidity and temperature) and chemical composition and, importantly, solid particles can inhibit the uptake of water and other trace gases, even under humid conditions. Particles composed primarily of ammonium sulfate are presumed to be liquid at the relative humidities (67 to 98%) and temperatures (–2 to 4 °C) of the summertime Arctic. Under these atmospheric conditions, we report the observation of solid organic-coated ammonium sulfate particles representing 30% of particles, by number, in a key size range (<0.2 µm) for cloud activation within marine air masses from the Arctic Ocean at Utqiagvik, AK. The composition and size of the observed particles are consistent with recent Arctic modeling and observational results showing new particle formation and growth from dimethylsulfide oxidation to form sulfuric acid, reaction with ammonia, and condensation of marine biogenic sulfate and highly oxygenated organic molecules. Aqueous sulfate particles typically undergo efflorescence and solidify at relative humidities of less than 34%. Therefore, the observed solid phase is hypothesized to occur from contact efflorescence during collision of a newly formed Aitken mode sulfate particle with an organic-coated ammonium sulfate particle. With declining sea ice in the warming Arctic, this particle source is expected to increase with increasing open water and marine biogenic emissions. |
author |
Kirpes, Rachel M. Lei, Ziying Fraund, Matthew Gunsch, Matthew J. May, Nathaniel W. Barrett, Tate E. Moffett, Claire E. Schauer, Andrew J. Alexander, Becky Upchurch, Lucia M. China, Swarup Quinn, Patricia K. Moffet, Ryan C. Laskin, Alexander Sheesley, Rebecca J. Pratt, Kerri A. Ault, Andrew P. |
author_facet |
Kirpes, Rachel M. Lei, Ziying Fraund, Matthew Gunsch, Matthew J. May, Nathaniel W. Barrett, Tate E. Moffett, Claire E. Schauer, Andrew J. Alexander, Becky Upchurch, Lucia M. China, Swarup Quinn, Patricia K. Moffet, Ryan C. Laskin, Alexander Sheesley, Rebecca J. Pratt, Kerri A. Ault, Andrew P. |
author_sort |
Kirpes, Rachel M. |
title |
Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere |
title_short |
Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere |
title_full |
Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere |
title_fullStr |
Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere |
title_full_unstemmed |
Solid organic-coated ammonium sulfate particles at high relative humidity in the summertime Arctic atmosphere |
title_sort |
solid organic-coated ammonium sulfate particles at high relative humidity in the summertime arctic atmosphere |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1860633 https://www.osti.gov/biblio/1860633 https://doi.org/10.1073/pnas.2104496119 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Arctic Arctic Ocean |
geographic_facet |
Aitken Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_relation |
http://www.osti.gov/servlets/purl/1860633 https://www.osti.gov/biblio/1860633 https://doi.org/10.1073/pnas.2104496119 doi:10.1073/pnas.2104496119 |
op_doi |
https://doi.org/10.1073/pnas.2104496119 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
119 |
container_issue |
14 |
_version_ |
1772811580430352384 |