https://www.mysciencework.com/publication/read/8881384/meteorological-measurements-in-the-upper-air-during-milwaukee-cruises-era-clim-id-0042#page-b
Possible cause for “Years Without a Summer” Martin Weiland et al.,[email protected] Abstract: Strong tropical volcanic eruptions have significant effects on global and regional temperatures. Their effects on precipitation, however, are less well understood. Analyzing hydroclimatic anomalies after fourteen strong eruptions during the last 400 years in climate reconstructions and model simulations, we find a reduction of the Asian and African summer monsoons and an increase of south-central European summer precipitation in the year following the eruption. 2 simulations provide evidence for a dynamical link between these phenomena. The weaker monsoon circulations weaken the northern branch of the Hadley circulation, alter the atmospheric circulation over the Atlantic-European sector and increase precipitation over Europe. This mechanism is able to explain, for instance, the wet summer in parts of Europe during the “Year Without a Summer” of 1816, which up to now has not been explained. The study underlines the importance of atmospheric teleconnections between the tropics and mid latitudes to better understand the regional climate response to stratospheric volcanic aerosols. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
