A related hypothesis[1] connects the Tambora eruption in 1815 with the colors of the sky in paintings made in the years thereafter, e.g. “Greifswald im Mondsche

A related hypothesis[1] connects the Tambora eruption in 1815 with the colors of the sky in paintings made in the years thereafter, e.g. “Greifswald im Mondschein” ‘Greifswald in the moonlight’ by Caspar David Friedrich in 1817, see: https://de.wikipedia.org/wiki/Datei:Caspar_David_Friedrich_064.jpg https://de.wikipedia.org/wiki/Datei:Caspar_David_Friedrich_0... [1] https://acp.copernicus.org/articles/14/2987/2014/acp-14-2987-2014-discussion.html https://acp.copernicus.org/articles/14/2987/2014/acp-14-2987...