Light scattering measurements

Aerosol light scattering is measured by a 3-wavelength integrating Nephelometer (TSI 3563). The wavelengths used are 450, 550, and 700 nm. Data is stored at 10 minutes intervals.

Light scattering by aerosols is closely correlated to particle mass and the signal from the instrument is often used to monitor this particle property. The largest signal is observed during the so called Arctic Haze events in late winter and spring. Summer is the clean period in the Arctic and the scattering presents very low values.

By combining the observed scattering and absorption the single scattering albedo can be calculated. This property is used in radiation transfer models