Kudzotsa, I, Phillips, VTJ and Dobbie, S (2018) Effects of solid aerosols on partially glaciated clouds. Quarterly Journal of the Royal Meteorological Society, 144 (717). pp. 2634-2649. ISSN 0035-9009
Abstract
Sensitivity tests were conducted using a state‐of‐the‐art aerosol–cloud to investigate the key microphysical and dynamical mechanisms by which solid aerosols affect glaciated clouds. The tests involved simulations of two contrasting cases of deep convection—a tropical maritime case and a midlatitude continental case, in which solid aerosol concentrations were increased from their pre‐industrial (1850) to their present‐day (2010) levels. In the midlatitude continental case, the boosting of the number concentrations of solid aerosols weakened the updrafts in deep convective clouds, resulting in reduced snow and graupel production. Consequently, the cloud fraction and the cloud optical thickness increased with increasing ice nuclei (IN), causing a negative radiative flux change at the top of the atmosphere (TOA), that is, a cooling effect of −1.96 ± 0.29 W/m². On the other hand, in the tropical maritime case, increased ice nuclei invigorated upper‐tropospheric updrafts in both deep convective and stratiform clouds, causing cloud tops to shift upwards. Snow production was also intensified, resulting in reduced cloud fraction and cloud optical thickness, hence a positive radiative flux change at the TOA—a warming effect of 1.02 ± 0.36 W/m² was predicted.
Metadata
Item Type: | Article |
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Copyright, Publisher and Additional Information: | © 2018 Royal Meteorological Society. This is the peer reviewed version of the following article: Kudzotsa I , Phillips VTJ, Dobbie S. Effects of solid aerosols on partially glaciated clouds. Q J R Meteorol Soc. 2018;144:2634–2649, which has been published in final form at https://doi.org/10.1002/qj.3376. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Aerosol-cloud interactions; Cloud microphysics; Cloud-resolving models; Clouds; Glaciated clouds; Indirect effects |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Jul 2018 13:52 |
Last Modified: | 13 Jul 2019 00:44 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/qj.3376 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:133318 |