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Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model

Sea spray aerosol (SSA) is a widely recognized important source of ice-nucleating particles (INPs) in the atmosphere. However, composition-specific identification, nucleation processes, and ice nucleation rates of SSA-INPs have not been well constrained. Microspectroscopic characterization of ambien...

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Autores principales: Alpert, Peter A., Kilthau, Wendy P., O’Brien, Rachel E., Moffet, Ryan C., Gilles, Mary K., Wang, Bingbing, Laskin, Alexander, Aller, Josephine Y., Knopf, Daniel A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9629709/
https://www.ncbi.nlm.nih.gov/pubmed/36322651
http://dx.doi.org/10.1126/sciadv.abq6842
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author Alpert, Peter A.
Kilthau, Wendy P.
O’Brien, Rachel E.
Moffet, Ryan C.
Gilles, Mary K.
Wang, Bingbing
Laskin, Alexander
Aller, Josephine Y.
Knopf, Daniel A.
author_facet Alpert, Peter A.
Kilthau, Wendy P.
O’Brien, Rachel E.
Moffet, Ryan C.
Gilles, Mary K.
Wang, Bingbing
Laskin, Alexander
Aller, Josephine Y.
Knopf, Daniel A.
author_sort Alpert, Peter A.
collection PubMed
description Sea spray aerosol (SSA) is a widely recognized important source of ice-nucleating particles (INPs) in the atmosphere. However, composition-specific identification, nucleation processes, and ice nucleation rates of SSA-INPs have not been well constrained. Microspectroscopic characterization of ambient and laboratory-generated SSA confirms that water-borne exudates from planktonic microorganisms composed of a mixture of proteinaceous and polysaccharidic compounds act as ice-nucleating agents (INAs). These data and data from previously published mesocosm and wave channel studies are subsequently used to further develop the stochastic freezing model (SFM) producing ice nucleation rate coefficients for SSA-INPs. The SFM simultaneously predicts immersion freezing and deposition and homogeneous ice nucleation by SSA particles under tropospheric conditions. Predicted INP concentrations agree with ambient and laboratory measurements. In addition, this holistic freezing model is independent of the source and exact composition of the SSA particles, making it well suited for implementation in cloud and climate models.
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spelling pubmed-96297092022-11-04 Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model Alpert, Peter A. Kilthau, Wendy P. O’Brien, Rachel E. Moffet, Ryan C. Gilles, Mary K. Wang, Bingbing Laskin, Alexander Aller, Josephine Y. Knopf, Daniel A. Sci Adv Earth, Environmental, Ecological, and Space Sciences Sea spray aerosol (SSA) is a widely recognized important source of ice-nucleating particles (INPs) in the atmosphere. However, composition-specific identification, nucleation processes, and ice nucleation rates of SSA-INPs have not been well constrained. Microspectroscopic characterization of ambient and laboratory-generated SSA confirms that water-borne exudates from planktonic microorganisms composed of a mixture of proteinaceous and polysaccharidic compounds act as ice-nucleating agents (INAs). These data and data from previously published mesocosm and wave channel studies are subsequently used to further develop the stochastic freezing model (SFM) producing ice nucleation rate coefficients for SSA-INPs. The SFM simultaneously predicts immersion freezing and deposition and homogeneous ice nucleation by SSA particles under tropospheric conditions. Predicted INP concentrations agree with ambient and laboratory measurements. In addition, this holistic freezing model is independent of the source and exact composition of the SSA particles, making it well suited for implementation in cloud and climate models. American Association for the Advancement of Science 2022-11-02 /pmc/articles/PMC9629709/ /pubmed/36322651 http://dx.doi.org/10.1126/sciadv.abq6842 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Earth, Environmental, Ecological, and Space Sciences
Alpert, Peter A.
Kilthau, Wendy P.
O’Brien, Rachel E.
Moffet, Ryan C.
Gilles, Mary K.
Wang, Bingbing
Laskin, Alexander
Aller, Josephine Y.
Knopf, Daniel A.
Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
title Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
title_full Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
title_fullStr Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
title_full_unstemmed Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
title_short Ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
title_sort ice-nucleating agents in sea spray aerosol identified and quantified with a holistic multimodal freezing model
topic Earth, Environmental, Ecological, and Space Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9629709/
https://www.ncbi.nlm.nih.gov/pubmed/36322651
http://dx.doi.org/10.1126/sciadv.abq6842
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