The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud
<p>Observations of vertically resolved turbulence and cloud microphysics in a mixed-phase altocumulus cloud are presented using in situ measurements from an instrumented aircraft. The turbulence spectrum is observed to have an increasingly negative skewness with distance below cloud top, sugge...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2020-02-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/20/1921/2020/acp-20-1921-2020.pdf |
| _version_ | 1818136061258235904 |
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| author | P. A. Barrett P. A. Barrett A. Blyth P. R. A. Brown S. J. Abel |
| author_facet | P. A. Barrett P. A. Barrett A. Blyth P. R. A. Brown S. J. Abel |
| author_sort | P. A. Barrett |
| collection | DOAJ |
| description | <p>Observations of vertically resolved turbulence and cloud microphysics in a mixed-phase altocumulus cloud are presented using in situ measurements from an instrumented aircraft. The turbulence spectrum is observed to have an increasingly negative skewness with distance below cloud top, suggesting that long-wave radiative cooling from the liquid cloud layer is an important source of turbulence kinetic energy. Turbulence measurements are presented from both the liquid cloud layer and ice virga below. Vertical profiles of both bulk and microphysical liquid and ice cloud properties indicate that ice is produced within the liquid layer cloud at a temperature of <span class="inline-formula">−30</span> <span class="inline-formula"><sup>∘</sup></span>C. These high-resolution in situ measurements support previous remotely sensed observations from both ground-based and space-borne instruments and could be used to evaluate numerical model simulations of altocumulus clouds at spatial scales from eddy-resolving models to global numerical weather prediction models and climate simulations.</p> |
| first_indexed | 2024-12-11T09:34:25Z |
| format | Article |
| id | doaj.art-b0bcf7cc837a45048ea69ecb02b2b611 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-11T09:34:25Z |
| publishDate | 2020-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-b0bcf7cc837a45048ea69ecb02b2b6112022-12-22T01:12:55ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242020-02-01201921193910.5194/acp-20-1921-2020The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloudP. A. Barrett0P. A. Barrett1A. Blyth2P. R. A. Brown3S. J. Abel4Met Office, Fitzroy Road, Exeter, EX1 3PB, UKNational Centre for Atmospheric Science, University of Leeds, Leeds, LS2 9PH, UKNational Centre for Atmospheric Science, University of Leeds, Leeds, LS2 9PH, UKMet Office, Fitzroy Road, Exeter, EX1 3PB, UKMet Office, Fitzroy Road, Exeter, EX1 3PB, UK<p>Observations of vertically resolved turbulence and cloud microphysics in a mixed-phase altocumulus cloud are presented using in situ measurements from an instrumented aircraft. The turbulence spectrum is observed to have an increasingly negative skewness with distance below cloud top, suggesting that long-wave radiative cooling from the liquid cloud layer is an important source of turbulence kinetic energy. Turbulence measurements are presented from both the liquid cloud layer and ice virga below. Vertical profiles of both bulk and microphysical liquid and ice cloud properties indicate that ice is produced within the liquid layer cloud at a temperature of <span class="inline-formula">−30</span> <span class="inline-formula"><sup>∘</sup></span>C. These high-resolution in situ measurements support previous remotely sensed observations from both ground-based and space-borne instruments and could be used to evaluate numerical model simulations of altocumulus clouds at spatial scales from eddy-resolving models to global numerical weather prediction models and climate simulations.</p>https://www.atmos-chem-phys.net/20/1921/2020/acp-20-1921-2020.pdf |
| spellingShingle | P. A. Barrett P. A. Barrett A. Blyth P. R. A. Brown S. J. Abel The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud Atmospheric Chemistry and Physics |
| title | The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud |
| title_full | The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud |
| title_fullStr | The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud |
| title_full_unstemmed | The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud |
| title_short | The structure of turbulence and mixed-phase cloud microphysics in a highly supercooled altocumulus cloud |
| title_sort | structure of turbulence and mixed phase cloud microphysics in a highly supercooled altocumulus cloud |
| url | https://www.atmos-chem-phys.net/20/1921/2020/acp-20-1921-2020.pdf |
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