The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code: A numerical model for the growth of charged and neutral aerosols
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The Ion and Charged Aerosol Growth Enhancement (ION-CAGE) code : A numerical model for the growth of charged and neutral aerosols. / Svensmark, Jacob; Shaviv, Nir J.; Enghoff, Martin B.; Svensmark, Henrik.
I: Journal of Geophysical Research: Biogeosciences, Bind 7, Nr. 9, e2020EA001142, 01.09.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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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 - 2020/9/1
Y1 - 2020/9/1
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
U2 - 10.1029/2020EA001142
DO - 10.1029/2020EA001142
M3 - Journal article
VL - 7
JO - Journal of Geophysical Research: Solid Earth
JF - Journal of Geophysical Research: Solid Earth
SN - 0148-0227
IS - 9
M1 - e2020EA001142
ER -
ID: 229807998