Han, K. M., Jung, C. H., Song, C. H., Koo, J. H., Yoon, Y. J., Lee, B. Y., Kim, H. S., and Seo, S.: Trends and classification of aerosol observed from MODIS sensor over Northern Europe and the Arctic, Atmospheric Pollution Research, 10.1016/j.apr.2024.102329, 2024.