Jan Esper

Jan Esper (born 1968) is the head of the dendro sciences division at the WSL (Wald Snee und Landschafft - en:Forest, Snow and Landscape) division of the Swiss Federal Institute of Technology (ETH). His research interests are Global Climate Change, Palaeoclimatology and Vegetation Dynamics.

His research has been part of the Hockey stick controversy with his temperature reconstructions, that have been cited as being evidence for both sides of the controversy.

Academic career

• 1995 Diplom in Geography at University of Bonn
• 1999 Ph.D. in Geography at the University of Bonn
• 2000 Postdoc at Columbia University
• 2001 Research scientist at ETH, Birmensdorf
• 2005 Habilitation at the University of Bern
• 2006 Head Dendro Sciences Division, WSL (Wald Schnee und Landschaft)

Selected publications

• Juckes, M.N.; Allen, M.R.; Briffa, Keith R.; Esper, Jan; Hegerl, G.C.; Moberg, Anders; Osborn, Timothy J.; Weber, S.L.; Zorita, Eduardo (2006). "Millennial temperature reconstruction intercomparison and evaluation" (pdf). Climate of the Past Discussions. 2 (5): 1001–1049. doi:10.5194/cpd-2-1001-2006.{{cite journal}}: CS1 maint: unflagged free DOI (link)
• Esper, Jan; Wilson, Robert J.S.; Frank, David C.; Moberg, Anders; Wanner, Heinz; Luterbacher, Jürg (2005). "Climate: past ranges and future changes" (PDF). Quaternary Science Reviews. 24 (20–21): 2164–2166. Bibcode:2005QSRv...24.2164E. doi:10.1016/j.quascirev.2005.07.001.
• Esper, Jan; Cook, Edward R.; Schweingruber, Fritz H. (2002). "Low-frequency signals in long tree-ring chronologies and the reconstruction of past temperature variability" (PDF). Science. 295 (5563): 2250–2253. Bibcode:2002Sci...295.2250E. doi:10.1126/science.1066208. PMID 11910106.
• Esper, Jan; Frank, David C..; Wilson, Robert J.S. (2004). "Climate Reconstructions: Low-Frequency Ambition and High-Frequency Ratification" (PDF). EOS. 85 (12): 113–120. Bibcode:2004EOSTr..85..113E. doi:10.1029/2004EO120002.

External links

• "An Esper Divergence Problem". Retrieved 2007-12-07.
• "Bending the Hockey Stick". Retrieved 2007-02-24.
• "Natural Variability and Climate Sensitivity". 2005. Retrieved 2007-02-24. {{cite web}}: Unknown parameter |month= ignored (help)