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Revising the hygroscopicity of inorganic sea salt particles

Sea spray is one of the largest natural aerosol sources and plays an important role in the Earth’s radiative budget. These particles are inherently hygroscopic, that is, they take-up moisture from the air, which affects the extent to which they interact with solar radiation. We demonstrate that the...

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Autores principales: Zieger, P., Väisänen, O., Corbin, J. C., Partridge, D. G., Bastelberger, S., Mousavi-Fard, M., Rosati, B., Gysel, M., Krieger, U. K., Leck, C., Nenes, A., Riipinen, I., Virtanen, A., Salter, M. E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5500848/
https://www.ncbi.nlm.nih.gov/pubmed/28671188
http://dx.doi.org/10.1038/ncomms15883
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author Zieger, P.
Väisänen, O.
Corbin, J. C.
Partridge, D. G.
Bastelberger, S.
Mousavi-Fard, M.
Rosati, B.
Gysel, M.
Krieger, U. K.
Leck, C.
Nenes, A.
Riipinen, I.
Virtanen, A.
Salter, M. E.
author_facet Zieger, P.
Väisänen, O.
Corbin, J. C.
Partridge, D. G.
Bastelberger, S.
Mousavi-Fard, M.
Rosati, B.
Gysel, M.
Krieger, U. K.
Leck, C.
Nenes, A.
Riipinen, I.
Virtanen, A.
Salter, M. E.
author_sort Zieger, P.
collection PubMed
description Sea spray is one of the largest natural aerosol sources and plays an important role in the Earth’s radiative budget. These particles are inherently hygroscopic, that is, they take-up moisture from the air, which affects the extent to which they interact with solar radiation. We demonstrate that the hygroscopic growth of inorganic sea salt is 8–15% lower than pure sodium chloride, most likely due to the presence of hydrates. We observe an increase in hygroscopic growth with decreasing particle size (for particle diameters <150 nm) that is independent of the particle generation method. We vary the hygroscopic growth of the inorganic sea salt within a general circulation model and show that a reduced hygroscopicity leads to a reduction in aerosol-radiation interactions, manifested by a latitudinal-dependent reduction of the aerosol optical depth by up to 15%, while cloud-related parameters are unaffected. We propose that a value of κ(s)=1.1 (at RH=90%) is used to represent the hygroscopicity of inorganic sea salt particles in numerical models.
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spelling pubmed-55008482017-07-11 Revising the hygroscopicity of inorganic sea salt particles Zieger, P. Väisänen, O. Corbin, J. C. Partridge, D. G. Bastelberger, S. Mousavi-Fard, M. Rosati, B. Gysel, M. Krieger, U. K. Leck, C. Nenes, A. Riipinen, I. Virtanen, A. Salter, M. E. Nat Commun Article Sea spray is one of the largest natural aerosol sources and plays an important role in the Earth’s radiative budget. These particles are inherently hygroscopic, that is, they take-up moisture from the air, which affects the extent to which they interact with solar radiation. We demonstrate that the hygroscopic growth of inorganic sea salt is 8–15% lower than pure sodium chloride, most likely due to the presence of hydrates. We observe an increase in hygroscopic growth with decreasing particle size (for particle diameters <150 nm) that is independent of the particle generation method. We vary the hygroscopic growth of the inorganic sea salt within a general circulation model and show that a reduced hygroscopicity leads to a reduction in aerosol-radiation interactions, manifested by a latitudinal-dependent reduction of the aerosol optical depth by up to 15%, while cloud-related parameters are unaffected. We propose that a value of κ(s)=1.1 (at RH=90%) is used to represent the hygroscopicity of inorganic sea salt particles in numerical models. Nature Publishing Group 2017-07-03 /pmc/articles/PMC5500848/ /pubmed/28671188 http://dx.doi.org/10.1038/ncomms15883 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zieger, P.
Väisänen, O.
Corbin, J. C.
Partridge, D. G.
Bastelberger, S.
Mousavi-Fard, M.
Rosati, B.
Gysel, M.
Krieger, U. K.
Leck, C.
Nenes, A.
Riipinen, I.
Virtanen, A.
Salter, M. E.
Revising the hygroscopicity of inorganic sea salt particles
title Revising the hygroscopicity of inorganic sea salt particles
title_full Revising the hygroscopicity of inorganic sea salt particles
title_fullStr Revising the hygroscopicity of inorganic sea salt particles
title_full_unstemmed Revising the hygroscopicity of inorganic sea salt particles
title_short Revising the hygroscopicity of inorganic sea salt particles
title_sort revising the hygroscopicity of inorganic sea salt particles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5500848/
https://www.ncbi.nlm.nih.gov/pubmed/28671188
http://dx.doi.org/10.1038/ncomms15883
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