Articles | Volume 18, issue 17
Atmos. Chem. Phys., 18, 13115–13133, 2018
https://doi.org/10.5194/acp-18-13115-2018

Special issue: VERDI – Vertical ​Distribution of Ice ​in Arctic Clouds...

Atmos. Chem. Phys., 18, 13115–13133, 2018
https://doi.org/10.5194/acp-18-13115-2018
Research article
12 Sep 2018
Research article | 12 Sep 2018

Simulated and observed horizontal inhomogeneities of optical thickness of Arctic stratus

Michael Schäfer et al.

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Cited articles

Barrett, A. I., Hogan, R. J., and Forbes, R. M.: Why are mixed-phase altocumulus clouds poorly predicted by large-scale models? Part 1. Physical processes, J. Geophys. Res.-Atmos., 122, 9903–9926, https://doi.org/10.1002/2016JD026321, 2017a. a
Barrett, A. I., Hogan, R. J., and Forbes, R. M.: Why are mixed-phase altocumulus clouds poorly predicted by large-scale models? Part 2. Vertical resolution sensitivity and parameterization, J. Geophys. Res.-Atmos., 122, 9927–9944, https://doi.org/10.1002/2016JD026322, 2017b. a
Bierwirth, E., Ehrlich, A., Wendisch, M., Gayet, J.-F., Gourbeyre, C., Dupuy, R., Herber, A., Neuber, R., and Lampert, A.: Optical thickness and effective radius of Arctic boundary-layer clouds retrieved from airborne nadir and imaging spectrometry, Atmos. Meas. Tech., 6, 1189–1200, https://doi.org/10.5194/amt-6-1189-2013, 2013. a, b, c
Brümmer, B.: Roll and Cell Convection in Wintertime Arctic Cold-Air Outbreaks, J. Atmos. Sci., 56, 2613–2636, https://doi.org/10.1175/1520-0469(1999)056<2613:RACCIW>2.0.CO;2, 1999. a, b
Cahalan, R. F.: Bounded cascade clouds: albedo and effective thickness, Nonlin. Processes Geophys., 1, 156–167, https://doi.org/10.5194/npg-1-156-1994, 1994. a
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Short summary
Airborne observed horizontal fields of cloud optical thickness are compared with semi-idealized large eddy simulations of Arctic stratus. The comparison focuses on horizontal cloud inhomogeneities and directional features of the small-scale cloud structures. Using inhomogeneity parameters and autocorrelation analysis it is investigated, if the observed small-scale cloud inhomogeneities can be represented by the model. Forcings for cloud inhomogeneities are investigated in a sensitivity study.
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