The Laki Eruption – studying Weather and Climate during the Little Ice Age with Paleo-Reanalysis

• DOI: 10.5194/egusphere-egu24-10439
• Publication Date: 2024-03-08T20:55:33Z
• Authors: Jörg Franke; Andrew Friedman; Noemi Imfeld; Stefan Brönnimann
• Keywords: Ice age

The assimilation of early instrumental, documentary, and proxy data into model simulations allows the study multivariate climate variability from monthly to centennial time scales. strength our paleo-reanalysis ModE-RA (Modern Era Reanalysis) lies specifically in period Little Ice Age because number assimilated values per year increases hundreds 17th century thousands 18th tens 19th century. In addition, recent efforts weather reconstruction based on instrumental even allow for European reconstructions at daily scales back Here, we present a case global anomalies following Laki eruption 1783. Most reports have been limited domain described an unexpectedly warm summer 1783 extremely cold winters three years. Our support which suggested atmospheric blocking be cause unexpected Europe. However, entire was not hot, but only relatively short June July. On northern hemisphere scale, find aerosol-induced cooling. African Indian Monsoon rainfall is reduced due weaker land-sea temperature gradient line with response strong tropical eruptions interhemispheric contrast extratropical eruptions. eruption, shows clear boreal winter warming high latitudes, slightly dampening hemispheric-scale cooling signal. future, or could used drive models glacier dynamics.