Articles | Volume 21, issue 9
https://doi.org/10.5194/acp-21-7271-2021
https://doi.org/10.5194/acp-21-7271-2021
Research article
 | 
12 May 2021
Research article |  | 12 May 2021

Is a more physical representation of aerosol activation needed for simulations of fog?

Craig Poku, Andrew N. Ross, Adrian A. Hill, Alan M. Blyth, and Ben Shipway

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Subject: Clouds and Precipitation | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Abdul-Razzak, H. and Ghan, S. J.: A parameterization of aerosol activation: 2. Multiple aerosol types, J. Geophys. Res.-Atmos., 105, 6837–6844, https://doi.org/10.1029/1999JD901161, 2000. a, b, c, d, e, f, g, h
Abdul-Razzak, H., Ghan, S. J., and Rivera-Carpio, C.: A parameterization of aerosol activation: 1. Single aerosol type, J. Geophys. Res.-Atmos., 103, 6123–6131, https://doi.org/10.1029/97JD03735, 1998. a, b
Abramowitz, M. and Stegun, I. A.:Handbook of mathematical functions with formulas, graphs, and mathematical tables, US Government printing office, 55, 1964. a
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BBC: Sheppey crossing crash: Dozens hurt as 130 vehicles crash, BBC News, available at: https://www.bbc.co.uk/news/uk-england-kent-23970047 (last access: 5 May 2021), 2013. a
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We present a new aerosol activation scheme suitable for modelling both fog and convective clouds. Most current activation schemes are designed for convective clouds, and we demonstrate that using them to model fog can negatively impact its life cycle. Our scheme has been used to model an observed fog case in the UK, where we demonstrate that a more physically based representation of aerosol activation is required to capture the transition to a deeper layer – more in line with observations.
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