Articles | Volume 15, issue 21
https://doi.org/10.5194/acp-15-12327-2015
https://doi.org/10.5194/acp-15-12327-2015
Research article
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09 Nov 2015
Research article | Highlight paper |  | 09 Nov 2015

Ice water content vertical profiles of high-level clouds: classification and impact on radiative fluxes

A. G. Feofilov, C. J. Stubenrauch, and J. Delanoë

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Bardeen, C. G., Gettelman, A., Jensen, E. J., Heymsfield, A., Conley, A. J., Delanoë, J., Deng, M., and Toon, O. B.: Improved cirrus simulations in a general circulation model using CARMA sectional microphysics, J. Geophys. Res.-Atmos., 118, 11679–11697, 2013.
Battaglia, A. and Delanoë, J.: Synergies and complementarities of CloudSat-CALIPSO snow observations, J. Geophys. Res., 118, 721–731, 2013.
Bony, S. and Dufresne, J.-L.: Marine boundary layer clouds at the heart of cloud feedback uncertainties in climate models, Geophys. Res. Lett., 32, L20806, https://doi.org/10.1029/2005GL023851, 2005.
Ceccaldi, M., Delanoë, J., Hogan, R. J., Pounder, N. L., Protat, A., and Pelon, J.: From CloudSat-CALIPSO to EarthCare: Evolution of the DARDAR cloud classification and its comparison to airborne radar-lidar observations, J. Geophys. Res., 118, 7962–7981, https://doi.org/10.1002/jgrd.50579, 2013.
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We discuss the shape of ice water content (IWC) vertical profiles in high ice clouds and its effect on radiative properties of these clouds, both in short- and in long-wave bands (SW and LW). We suggest a set of primitive shapes (rectangular, isosceles trapezoid, lower and upper triangle) and propose a statistical parameterization using ice water path (IWP) as a single parameter. We estimate and explain simulated differences in LW/SW atmospheric radiances for suggested IWC shapes.
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