The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol

Abstract Sea spray aerosol (SSA) contributes significantly to natural aerosol particle concentrations globally, in marine areas even dominantly. The potential changes of the omnipresent inorganic fraction of SSA due to atmospheric ageing is largely unexplored. In the atmosphere, SSA may exist as aqu...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bernadette Rosati, Sigurd Christiansen, Anders Dinesen, Pontus Roldin, Andreas Massling, E. Douglas Nilsson, Merete Bilde
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3a6a4a37fab441ce9b5dc9211030b7e7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:3a6a4a37fab441ce9b5dc9211030b7e7
record_format	dspace
spelling	oai:doaj.org-article:3a6a4a37fab441ce9b5dc9211030b7e72021-12-02T17:02:05ZThe impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol10.1038/s41598-021-89346-62045-2322https://doaj.org/article/3a6a4a37fab441ce9b5dc9211030b7e72021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89346-6https://doaj.org/toc/2045-2322Abstract Sea spray aerosol (SSA) contributes significantly to natural aerosol particle concentrations globally, in marine areas even dominantly. The potential changes of the omnipresent inorganic fraction of SSA due to atmospheric ageing is largely unexplored. In the atmosphere, SSA may exist as aqueous phase solution droplets or as dried solid or amorphous particles. We demonstrate that ageing of liquid NaCl and artificial sea salt aerosol by exposure to ozone and UV light leads to a substantial decrease in hygroscopicity and cloud activation potential of the dried particles of the same size. The results point towards surface reactions on the liquid aerosols that are more crucial for small particles and the formation of salt structures with water bound within the dried aerosols, termed hydrates. Our findings suggest an increased formation of hydrate forming salts during ageing and the presence of hydrates in dried SSA. Field observations indicate a reduced hygroscopic growth factor of sub-micrometre SSA in the marine atmosphere compared to fresh laboratory generated NaCl or sea salt of the same dry size, which is typically attributed to organic matter or sulphates. Aged inorganic sea salt offers an additional explanation for such a measured reduced hygroscopic growth factor and cloud activation potential.Bernadette RosatiSigurd ChristiansenAnders DinesenPontus RoldinAndreas MasslingE. Douglas NilssonMerete BildeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bernadette Rosati Sigurd Christiansen Anders Dinesen Pontus Roldin Andreas Massling E. Douglas Nilsson Merete Bilde The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
description	Abstract Sea spray aerosol (SSA) contributes significantly to natural aerosol particle concentrations globally, in marine areas even dominantly. The potential changes of the omnipresent inorganic fraction of SSA due to atmospheric ageing is largely unexplored. In the atmosphere, SSA may exist as aqueous phase solution droplets or as dried solid or amorphous particles. We demonstrate that ageing of liquid NaCl and artificial sea salt aerosol by exposure to ozone and UV light leads to a substantial decrease in hygroscopicity and cloud activation potential of the dried particles of the same size. The results point towards surface reactions on the liquid aerosols that are more crucial for small particles and the formation of salt structures with water bound within the dried aerosols, termed hydrates. Our findings suggest an increased formation of hydrate forming salts during ageing and the presence of hydrates in dried SSA. Field observations indicate a reduced hygroscopic growth factor of sub-micrometre SSA in the marine atmosphere compared to fresh laboratory generated NaCl or sea salt of the same dry size, which is typically attributed to organic matter or sulphates. Aged inorganic sea salt offers an additional explanation for such a measured reduced hygroscopic growth factor and cloud activation potential.
format	article
author	Bernadette Rosati Sigurd Christiansen Anders Dinesen Pontus Roldin Andreas Massling E. Douglas Nilsson Merete Bilde
author_facet	Bernadette Rosati Sigurd Christiansen Anders Dinesen Pontus Roldin Andreas Massling E. Douglas Nilsson Merete Bilde
author_sort	Bernadette Rosati
title	The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
title_short	The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
title_full	The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
title_fullStr	The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
title_full_unstemmed	The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
title_sort	impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3a6a4a37fab441ce9b5dc9211030b7e7
work_keys_str_mv	AT bernadetterosati theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT sigurdchristiansen theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT andersdinesen theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT pontusroldin theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT andreasmassling theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT edouglasnilsson theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT meretebilde theimpactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT bernadetterosati impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT sigurdchristiansen impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT andersdinesen impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT pontusroldin impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT andreasmassling impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT edouglasnilsson impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol AT meretebilde impactofatmosphericoxidationonhygroscopicityandclouddropletactivationofinorganicseasprayaerosol
_version_	1718381960469938176

The impact of atmospheric oxidation on hygroscopicity and cloud droplet activation of inorganic sea spray aerosol

Ejemplares similares