Reconciling atmospheric water uptake by hydrate forming salts

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Reconciling atmospheric water uptake by hydrate forming salts. / Rosati, Bernadette; Paul, Andreas; Iversen, Emil Mark; Massling, Andreas; Bilde, Merete.

In: Environmental science. Processes & impacts, Vol. 22, No. 8, 1759, 2020, p. 1759-1767.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Rosati, B, Paul, A, Iversen, EM, Massling, A & Bilde, M 2020, 'Reconciling atmospheric water uptake by hydrate forming salts', Environmental science. Processes & impacts, vol. 22, no. 8, 1759, pp. 1759-1767. https://doi.org/10.1039/d0em00179a

APA

CBE

MLA

Rosati, Bernadette et al. "Reconciling atmospheric water uptake by hydrate forming salts". Environmental science. Processes & impacts. 2020, 22(8). 1759-1767. https://doi.org/10.1039/d0em00179a

Vancouver

Author

Rosati, Bernadette ; Paul, Andreas ; Iversen, Emil Mark ; Massling, Andreas ; Bilde, Merete. / Reconciling atmospheric water uptake by hydrate forming salts. In: Environmental science. Processes & impacts. 2020 ; Vol. 22, No. 8. pp. 1759-1767.

Bibtex

@article{f493bb9d03e4427db57469dac65c4353,
title = "Reconciling atmospheric water uptake by hydrate forming salts",
abstract = "Magnesium and calcium chloride salts contribute to the global atmospheric aerosol burden via emission of sea spray and mineral dust. Their influence on aerosol hygroscopicity and cloud forming potential is important but uncertain with ambiguities between results reported in the literature. To address this, we have conducted measurements of the hygroscopic growth and critical supersaturation of dried, size selected nano-particles made from aqueous solution droplets of MgCl2 and CaCl2, respectively, and compare experimentally derived values with results from state-of-the-art thermodynamic modelling. It is characteristic of both MgCl2 and CaCl2 salts that they bind water in the form of hydrates under a range of ambient conditions. We discuss how hydrate formation affects the particles' water uptake and provide an expression for hydrate correction factors needed in calculations of hygroscopic growth factors, critical super-saturations, and derived κ values of particles containing hydrate forming salts. We demonstrate the importance of accounting for hydrate forming salts when predicting hygroscopic properties of sea spray aerosol.",
author = "Bernadette Rosati and Andreas Paul and Iversen, {Emil Mark} and Andreas Massling and Merete Bilde",
year = "2020",
doi = "10.1039/d0em00179a",
language = "English",
volume = "22",
pages = "1759--1767",
journal = "Environmental science. Processes & impacts",
issn = "2050-7895",
publisher = "royal society of chemistry",
number = "8",

}

RIS

TY - JOUR

T1 - Reconciling atmospheric water uptake by hydrate forming salts

AU - Rosati, Bernadette

AU - Paul, Andreas

AU - Iversen, Emil Mark

AU - Massling, Andreas

AU - Bilde, Merete

PY - 2020

Y1 - 2020

N2 - Magnesium and calcium chloride salts contribute to the global atmospheric aerosol burden via emission of sea spray and mineral dust. Their influence on aerosol hygroscopicity and cloud forming potential is important but uncertain with ambiguities between results reported in the literature. To address this, we have conducted measurements of the hygroscopic growth and critical supersaturation of dried, size selected nano-particles made from aqueous solution droplets of MgCl2 and CaCl2, respectively, and compare experimentally derived values with results from state-of-the-art thermodynamic modelling. It is characteristic of both MgCl2 and CaCl2 salts that they bind water in the form of hydrates under a range of ambient conditions. We discuss how hydrate formation affects the particles' water uptake and provide an expression for hydrate correction factors needed in calculations of hygroscopic growth factors, critical super-saturations, and derived κ values of particles containing hydrate forming salts. We demonstrate the importance of accounting for hydrate forming salts when predicting hygroscopic properties of sea spray aerosol.

AB - Magnesium and calcium chloride salts contribute to the global atmospheric aerosol burden via emission of sea spray and mineral dust. Their influence on aerosol hygroscopicity and cloud forming potential is important but uncertain with ambiguities between results reported in the literature. To address this, we have conducted measurements of the hygroscopic growth and critical supersaturation of dried, size selected nano-particles made from aqueous solution droplets of MgCl2 and CaCl2, respectively, and compare experimentally derived values with results from state-of-the-art thermodynamic modelling. It is characteristic of both MgCl2 and CaCl2 salts that they bind water in the form of hydrates under a range of ambient conditions. We discuss how hydrate formation affects the particles' water uptake and provide an expression for hydrate correction factors needed in calculations of hygroscopic growth factors, critical super-saturations, and derived κ values of particles containing hydrate forming salts. We demonstrate the importance of accounting for hydrate forming salts when predicting hygroscopic properties of sea spray aerosol.

UR - http://www.scopus.com/inward/record.url?scp=85089768514&partnerID=8YFLogxK

U2 - 10.1039/d0em00179a

DO - 10.1039/d0em00179a

M3 - Journal article

C2 - 32697206

AN - SCOPUS:85089768514

VL - 22

SP - 1759

EP - 1767

JO - Environmental science. Processes & impacts

JF - Environmental science. Processes & impacts

SN - 2050-7895

IS - 8

M1 - 1759

ER -