Fifteen Hundred Years of Climatic Oscillations in Southern Poland
Gasiorowski, M. and Sienkiewicz, E. 2010. The Little Ice Age recorded in sediments of a small dystrophic mountain lake in southern Poland. Journal of Paleolimnology 43: 475-487.
Next came the Little Ice Age, which was the focal point of their study, extending all the way to the start of the 20th century, after which relative warmth once again returned, persisting to the present. And based on the peak Chironomus concentrations of this portion of their record, which we call the Current Warm Period or CWP, their data suggest that the peak warmth of the CWP and the earlier MWP were about the same, which is also what the temperature reconstruction of Moberg et al. suggests. Hence, once again, we have another paleoclimate record that displays the millennial-scale oscillation of climate that reverberates throughout the Holocene and about as far back in time as researchers have looked for it. And once again we have another demonstration of the fact that the peak warmth of the late 20th-century and the early 21st-century has not been as unprecedented as the IPCC and others have typically claimed it to be.
Moberg, A., Sonechkin, D.M., Holmgren, K., Datsenko, N.M. and Karlen, W. 2005. Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data. Nature 433: 613-617