Articles | Volume 17, issue 3
Atmos. Chem. Phys., 17, 2359–2372, 2017

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

Atmos. Chem. Phys., 17, 2359–2372, 2017
Research article
15 Feb 2017
Research article | 15 Feb 2017

Directional, horizontal inhomogeneities of cloud optical thickness fields retrieved from ground-based and airbornespectral imaging

Michael Schäfer et al.

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Cited articles

Albrecht, B. A.: Aerosols, Cloud Microphysics, and Fractional Cloudiness, Science, 245, 1227–1230,, 1989.
Barker, H., Wielicki, B., and Parker, L.: A parameterization for computing grid-averaged solar fluxes for inhomogeneous marine boundary layer clouds. Part II: Validation using satellite data, J. Atmos. Sci., 53, 2304–2316, 1996.
Barlakas, V., Macke, A., and Wendisch, M.: SPARTA – Solver for Polarized Atmospheric Radiative Transfer Applications: Introduction and application in Saharan dust fields, J. Quant. Spectrosc. Ra., 178, 77–92,, 2016.
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,, 2013.
Cahalan, R.: Bounded cascade clouds: albedo and effective thickness, Nonlinear Proc. Geoph., 1, 156–157, 1994.
Short summary
Cloud optical thickness fields, retrieved from solar spectral radiance measurements, are used to investigate the directional structure of horizontal cloud inhomogeneities with scalar one-dimensional inhomogeneity parameters, two-dimensional auto-correlation functions, and two-dimensional Fourier analysis. The investigations reveal that it is not sufficient to quantify horizontal cloud inhomogeneities by one-dimensional inhomogeneity parameters; two-dimensional parameters are necessary.
Final-revised paper