Cloud optical thickness, cloud particle effective radius, and effective snow grain size retrieved from airborne spectral reflectivity measurements on 2012-05-17 (VERDI 2012) over the Beaufort Sea ...

• Main Authors: Ehrlich, André, Bierwirth, Eike, Istomina, Larysa, Wendisch, Manfred
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Time in seconds; DATE/TIME; LATITUDE; LONGITUDE; Height above sea level; Solar zenith angle; Reflectance; Flag; Cloud optical thickness; Cloud particle radius; Snow grain size; Error; Aircraft; Spectral modular airborne radiation measurement system SMART; Moderate-resolution imaging spectroradiometer MODIS; VERDI_2012; POLAR 5; Arctic Amplification AC3; Arctic; Beaufort Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.882977; https://doi.pangaea.de/10.1594/PANGAEA.882977

SMART uses two separte spectrometer to cover the solar spectral range. To overcome differences in the timing of both components, a running mean (5 sec) was applied to the reflectivity time series in the retrieval algorithm. Therefore, cloud optical thickness, cloud particle size and snow grain size are smoothed as well while the reflectivity time series are provided as raw data without running mean.MODIS cloud products were selected and averaged for an area of 5x5 pixel with the aircraft observations centered in this area.tau_MODIS: MODIS cloud product Collection 6: Cloud Optical Thickness (dimensionless) two-channel retrieval using band 7(2.1 µm) and band 6(1.6 µm) from best points: not failed in any way, not marked for clear sky restoraltau_MODIS_16: MODIS cloud product Collection 6: Cloud Optical Thickness (dimensionless) two-channel retrieval using band 7(2.1 µm) and either band 1(0.65 µm) , 2(0.86 µm) , or 5(1.2 µm) (specified in Quality_Assurance_1km) from best points: not failed in any way, not marked ...