Modelling of cirrus clouds – Part 1a: Model description and validation
A double-moment bulk microphysics scheme for modelling cirrus clouds including explicit impact of aerosols on different types of nucleation mechanism is described. Process rates are formulated in terms of generalised moments of the underlying a priori size distributions in order to allow simple swit...
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Online Access: | https://doi.org/10.5194/acp-9-685-2009 https://www.atmos-chem-phys.net/9/685/2009/ |
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ftcopernicus:oai:publications.copernicus.org:acp4992 2023-05-15T15:02:31+02:00 Modelling of cirrus clouds – Part 1a: Model description and validation Spichtinger, P. Gierens, K. M. 2018-01-15 application/pdf https://doi.org/10.5194/acp-9-685-2009 https://www.atmos-chem-phys.net/9/685/2009/ eng eng doi:10.5194/acp-9-685-2009 https://www.atmos-chem-phys.net/9/685/2009/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-9-685-2009 2019-12-24T09:58:01Z A double-moment bulk microphysics scheme for modelling cirrus clouds including explicit impact of aerosols on different types of nucleation mechanism is described. Process rates are formulated in terms of generalised moments of the underlying a priori size distributions in order to allow simple switching between various distribution types. The scheme has been implemented into a simple box model and into the anelastic non-hydrostatic model EULAG. The new microphysics is validated against simulations with detailed microphysics for idealised process studies and for a well documented case of arctic cirrostratus. Additionally, the formation of ice crystals with realistic background aerosol concentration is modelled and the effect of ambient pressure on homogeneous nucleation is investigated in the box model. The model stands all tests and is thus suitable for cloud-resolving simulations of cirrus clouds. Text Arctic Copernicus Publications: E-Journals Arctic Atmospheric Chemistry and Physics 9 2 685 706 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
A double-moment bulk microphysics scheme for modelling cirrus clouds including explicit impact of aerosols on different types of nucleation mechanism is described. Process rates are formulated in terms of generalised moments of the underlying a priori size distributions in order to allow simple switching between various distribution types. The scheme has been implemented into a simple box model and into the anelastic non-hydrostatic model EULAG. The new microphysics is validated against simulations with detailed microphysics for idealised process studies and for a well documented case of arctic cirrostratus. Additionally, the formation of ice crystals with realistic background aerosol concentration is modelled and the effect of ambient pressure on homogeneous nucleation is investigated in the box model. The model stands all tests and is thus suitable for cloud-resolving simulations of cirrus clouds. |
format |
Text |
author |
Spichtinger, P. Gierens, K. M. |
spellingShingle |
Spichtinger, P. Gierens, K. M. Modelling of cirrus clouds – Part 1a: Model description and validation |
author_facet |
Spichtinger, P. Gierens, K. M. |
author_sort |
Spichtinger, P. |
title |
Modelling of cirrus clouds – Part 1a: Model description and validation |
title_short |
Modelling of cirrus clouds – Part 1a: Model description and validation |
title_full |
Modelling of cirrus clouds – Part 1a: Model description and validation |
title_fullStr |
Modelling of cirrus clouds – Part 1a: Model description and validation |
title_full_unstemmed |
Modelling of cirrus clouds – Part 1a: Model description and validation |
title_sort |
modelling of cirrus clouds – part 1a: model description and validation |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-9-685-2009 https://www.atmos-chem-phys.net/9/685/2009/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-9-685-2009 https://www.atmos-chem-phys.net/9/685/2009/ |
op_doi |
https://doi.org/10.5194/acp-9-685-2009 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
9 |
container_issue |
2 |
container_start_page |
685 |
op_container_end_page |
706 |
_version_ |
1766334466529165312 |