High-resolution, multiproxy studies of the sediments of Lake Schweriner See (the fourth largest in Germany), in which Sambor Czerwiński also contributed, made it possible to reconstruct large-scale atmospheric processes of the last 3,000 years. The results suggest variability in the North Atlantic Oscillation, NAO.
Prior to about 1850, productivity in Lake Schweriner See was mainly controlled by variability in cold season temperatures. This is due to the influence of air temperature on the duration of ice cover and the length of the growing season. This resulted in lower productivity during colder periods and higher productivity during milder periods.
Interestingly, it was only after about 1850 that the hydroclimatic signal was masked by anthropogenic influences, mainly the eutrophication of Schweriner See, which changed the lake’s productivity from being temperature-dependent to being dependent on nutrient availability.
We invite you to read our article, which is available in open access!
https://cp.copernicus.org/articles/20/2143/2024
Adolph M.-L., Czerwiński S., Dreßler M., Strobel P., Bliedtner M., Lorenz S., Debret M., Haberzettl T., 2024, North Atlantic Oscillation polarity during the past 3000 years derived from sediments of a large lowland lake, Schweriner See, in NE Germany, Climate of the Past 20, 2143–2165, https://doi.org/10.5194/cp-20-2143-2024