One part of our work is dedicated to the investigating and explanation of unusual optical phenomena in the Earth's atmosphere, such as, e.g., blue or green suns or green sunsets. Here is a list of publications on optical phenomena:

Lange, A., Baumgarten, G., Rozanov, A., and von Savigny, C.: On the colour of noctilucent clouds, Ann. Geophys., 40, 407–419, doi.org/10.5194/angeo-40-407-2022, 2022.

Lange, A., Rozanov, A., and von Savigny, C., On the twilight phenomenon of the green band, Applied Optics, Appl. Opt., 62, 162-171, 2023.

Lange, A., Rozanov, A., and von Savigny, C.: Revisiting the question "Why is the sky blue?", EGUsphere [preprint], doi.org/10.5194/egusphere-2023-1430, 2023.

von Savigny, C., Lange, A., Hemkendreis, A., Hoffmann, C. G., and Rozanov, A.: Is it possible to estimate aerosol optical depth from historic colour paintings?, Clim. Past, 18, 2345–2356, https://doi.org/10.5194/cp-18-2345-2022, highlight paper, 2022.

von Savigny, C., Lange, A., Hoffmann, C., and Rozanov, A.: Explaining the green volcanic sunsets after the 1883 eruption of Krakatoa, EGUsphere [preprint], doi.org/10.5194/egusphere-2023-1669, 2023.

Wullenweber, N., Lange, A., Rozanov, A., and von Savigny, C.: On the phenomenon of the blue sun, Clim. Past, 17, 969–983, https://doi.org/10.5194/cp-17-969-2021, highlight paper, 2021.