They analyzed ancient subsea volcanic ash deposits and found a link between them and melting polar ice associated with warming climates, on an odd, millennia-long delay.

FORBES: The Link Between Global Warming, Sea Levels And Volcanoes

Conservationists working in a new branch of the library still face the task of removing ash deposits between pages, repairing parchment volumes and vellum spines that split in the fierce heat a painstaking process that involves weeks of work on each book.

ECONOMIST: The Duchess Anna Amalia library

However during the bloom triggered by the ash deposits from the eruption, the team recorded that it was a shortage of nitrogen that limited the size of the phytoplankton bloom and - as a result - the volume of carbon dioxide uptake.

BBC: Iceland volcano ash cloud triggers plankton bloom