Optical thickness and effective radius of Arctic boundary-layer clouds retrieved from airborne spectral and hyperspectral radiance measurements.

The article presents a study which focuses on the optical thickness and effective radius of Arctic boundary-layer clouds in Svalbard, Norway that were retrieved from airborne spectral and hyperspectral radiance measurements. The study used two approaches for the spectral retrieval by combining the signal from either two or five wavelengths. The results shows that the in situ data cannot give a definite answer on which method is better due to the unavoidable time delays.