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ACP | Articles | Volume 20, issue 8
Atmos. Chem. Phys., 20, 5035–5054, 2020
https://doi.org/10.5194/acp-20-5035-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 20, 5035–5054, 2020
https://doi.org/10.5194/acp-20-5035-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 28 Apr 2020

Research article | 28 Apr 2020

Supercooled drizzle development in response to semi-coherent vertical velocity fluctuations within an orographic-layer cloud

Adam Majewski and Jeffrey R. French

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Cited articles

Aikins, J., Friedrich, K., Geerts, B., and Pokharel, B.: Role of a Cross-Barrier Jet and Turbulence on Winter Orographic Snowfall, Mon. Weather Rev., 144, 3277–3300, https://doi.org/10.1175/MWR-D-16-0025.1, 2016. 
Albrecht, B. A., Fairall, C. W., Thomson, D. W., White, A. B., Snider, J. B., and Schubert, W. H.: Surface-based remote sensing of the observed and the Adiabatic liquid water content of stratocumulus clouds, Geophys. Res. Lett., 17, 89–92, https://doi.org/10.1029/GL017i001p00089, 1990. 
Ashenden, R., Lindberg, W., Marwitz, J. D., and Hoxie, B.: Airfoil performance degradation by supercooled cloud, drizzle, and rain drop icing, J. Aircraft, 33, 1040–1046, https://doi.org/10.2514/3.47055, 1996. 
Bernstein, B. C., Wolff, C. A., and McDonough, F.: An Inferred Climatology of Icing Conditions Aloft, Including Supercooled Large Drops. Part I: Canada and the Continental United States, J. Appl. Meteorol. Clim., 46, 1857–1878, https://doi.org/10.1175/2007JAMC1607.1, 2007. 
Cober, S. G., Isaac, G. A., and Strapp, J. W.: Characterizations of Aircraft Icing Environments that Include Supercooled Large Drops, J. Appl. Meteorol., 40, 1984–2002, https://doi.org/10.1175/1520-0450(2001)040<1984:COAIET>2.0.CO;2, 2001. 
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The study reports formation of supercooled drizzle drops in response to repeating kilometer-wide updrafts and downdrafts within a mixed-phase, mountain-layer cloud containing very little ice despite cold cloud top temperatures (T ~ -30°C). The discrete, embedded hydrometeor growth layers and downwind transition to drizzle production at cloud top indicates the relative importance of kinematic mechanisms in determining the location of precipitation development in cloud.
The study reports formation of supercooled drizzle drops in response to repeating kilometer-wide...
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