WFRF:(Ickes Luisa 1986)
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- Sotiropoulou, GeorgiaStockholms universitet,Meteorologiska institutionen (MISU),Ecole Polytechnique Fédérale de Lausanne, Switzerland,Stockholm University,Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
Ice multiplication from ice-ice collisions in the high Arctic: Sensitivity to ice habit, rimed fraction, ice type and uncertainties in the numerical description of the process
- Article/chapterEnglish2021
Publisher, publication year, extent ...
- 2021-06-29
- Copernicus GmbH,2021
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:research.chalmers.se:e4d40d00-7c20-4261-bc9e-7635d98be2a5
- https://doi.org/10.5194/acp-21-9741-2021DOI
- https://research.chalmers.se/publication/524885URI
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-195949URI
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- Language:English
- Summary in:English
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Notes
- Atmospheric models often fail to correctly reproduce the microphysical structure of Arctic mixed-phase clouds and underpredict ice water content even when the simulations are constrained by observed levels of ice nucleating particles. In this study we investigate whether ice multiplication from breakup upon ice-ice collisions, a process missing in most models, can account for the observed cloud ice in a stratocumulus cloud observed during the Arctic Summer Cloud Ocean Study (ASCOS) campaign. Our results indicate that the efficiency of this process in these conditions is weak; increases in fragment generation are compensated for by subsequent enhancement of precipitation and subcloud sublimation. Activation of collisional breakup improves the representation of cloud ice content, but cloud liquid remains overestimated. In most sensitivity simulations, variations in ice habit and prescribed rimed fraction have little effect on the results. A few simulations result in explosive multiplication and cloud dissipation; however, in most setups, the overall multiplication effects become substantially weaker if the precipitation sink is enhanced through cloud-ice-to-snow autoconversion. The largest uncertainty stems from the correction factor for ice enhancement due to sublimation included in the breakup parameterization; excluding this correction results in rapid glaciation, especially in simulations with plates. Our results indicate that the lack of a detailed treatment of ice habit and rimed fraction in most bulk microphysics schemes is not detrimental for the description of the collisional breakup process in the examined conditions as long as cloud-ice-to-snow autoconversion is considered.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Meteorologi och atmosfärforskning hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Meteorology and Atmospheric Sciences hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap Naturgeografi hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Physical Geography hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap Multidisciplinär geovetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geosciences, Multidisciplinary hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences hsv//eng
Added entries (persons, corporate bodies, meetings, titles ...)
- Ickes, Luisa,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ickes (author)
- Nenes, AthanasiosIdryma Technologias kai Erevnas (FORTH),Foundation for Research and Technology Hellas (FORTH),Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
- Ekman, Annica M. L.Stockholms universitet,Meteorologiska institutionen (MISU),Stockholm University(Swepub:su)aekma (author)
- Stockholms universitetMeteorologiska institutionen (MISU) (creator_code:org_t)
Related titles
- In:Atmospheric Chemistry and Physics: Copernicus GmbH21:12, s. 9741-97601680-73161680-7324
Internet link
- https://research.chalmers.se/publication/524885/file/524885_Fulltext.pdfFULLTEXT
- https://acp.copernicus.org/articles/21/9741/2021/acp-21-9741-2021.pdf
- https://doi.org/10.5194/acp-21-9741-2021Fulltext
- https://doi.org/10.5194/acp-21-9741-2021
- https://research.chalmers.se/publication/524885
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-195949
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