The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code: A numerical model for the growth of charged and neutral aerosols

Jacob Svensmark; Nir J. Shaviv; Martin B. Enghoff; Henrik Svensmark

The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code: A numerical model for the growth of charged and neutral aerosols

Jacob Svensmark, Nir J. Shaviv, Martin B. Enghoff, Henrik Svensmark

DARK

Abstract

The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To this end, we develop a numerical model to calculate the growth of a species of aerosols in the presence of charge, which explicitly includes terms for ion-condensation. It is shown that a positive contribution to aerosol growth rate is obtained by increasing the ion-pair concentration through this effect, consistent with recent experimental findings. The ion-condensation effect is then compared to aerosol growth from charged aerosol coagulation, which is seen to be independent of ion-pair concentration. The model source code is made available through a public repository.

Original language	English
Journal	arXiv
Publication status	Published - 19 Sept 2019

Keywords

physics.ao-ph
86-04
J.2.5

Cite this

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title = "The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code: A numerical model for the growth of charged and neutral aerosols",

abstract = "The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To this end, we develop a numerical model to calculate the growth of a species of aerosols in the presence of charge, which explicitly includes terms for ion-condensation. It is shown that a positive contribution to aerosol growth rate is obtained by increasing the ion-pair concentration through this effect, consistent with recent experimental findings. The ion-condensation effect is then compared to aerosol growth from charged aerosol coagulation, which is seen to be independent of ion-pair concentration. The model source code is made available through a public repository. ",

keywords = "physics.ao-ph, 86-04, J.2.5",

author = "Jacob Svensmark and Shaviv, {Nir J.} and Enghoff, {Martin B.} and Henrik Svensmark",

note = "29 pages, 12 figures",

year = "2019",

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language = "English",

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TY - JOUR

T1 - The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code

T2 - A numerical model for the growth of charged and neutral aerosols

AU - Svensmark, Jacob

AU - Shaviv, Nir J.

AU - Enghoff, Martin B.

AU - Svensmark, Henrik

N1 - 29 pages, 12 figures

PY - 2019/9/19

Y1 - 2019/9/19

N2 - The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To this end, we develop a numerical model to calculate the growth of a species of aerosols in the presence of charge, which explicitly includes terms for ion-condensation. It is shown that a positive contribution to aerosol growth rate is obtained by increasing the ion-pair concentration through this effect, consistent with recent experimental findings. The ion-condensation effect is then compared to aerosol growth from charged aerosol coagulation, which is seen to be independent of ion-pair concentration. The model source code is made available through a public repository.

AB - The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To this end, we develop a numerical model to calculate the growth of a species of aerosols in the presence of charge, which explicitly includes terms for ion-condensation. It is shown that a positive contribution to aerosol growth rate is obtained by increasing the ion-pair concentration through this effect, consistent with recent experimental findings. The ion-condensation effect is then compared to aerosol growth from charged aerosol coagulation, which is seen to be independent of ion-pair concentration. The model source code is made available through a public repository.

KW - physics.ao-ph

KW - 86-04

KW - J.2.5

M3 - Journal article

JO - arXiv

JF - arXiv

ER -