Jan Esper

Low-Frequency Signals in Long Tree-Ring Chronologies for Reconstructing Past Temperature Variability

Jan Esper, Edward R. Cook, Fritz Hans Schweingruber · Science · 2002 · 1.5K citations

2500 Years of European Climate Variability and Human Susceptibility

Ulf Büntgen, Willy Tegel, Kurt Nicolussi et al. · Science · 2011 · 1.5K citations · Full text

Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly

Valérie Trouet, Jan Esper, Nicholas E. Graham et al. · Science · 2009 · 1.1K citations

Engineering, European Climate, Climate Modeling +16

Cooling and societal change during the Late Antique Little Ice Age from 536 to around 660 AD

Ulf Büntgen, Vladimir S. Myglan, Fredrik Charpentier Ljungqvist et al. · Nature Geoscience · 2016 · 920 citations

Historical Geography, Societal Change, Engineering +6

Old World megadroughts and pluvials during the Common Era

Edward R. Cook, Richard Seager, Yochanan Kushnir et al. · Science Advances · 2015 · 689 citations · Full text