Jan Esper

Jan Esper (born 1968) is Head of Unit of the Department of Geography, University of Mainz. His research interests are Global Climate Change, Palaeoclimatology and Vegetation Dynamics.

His research has notably included hockey stick graph temperature reconstructions.

Research Interests

• Global Climate Change
• Paleoclimatology
• Urban Climate
• Dendrochronology

Academic career

• Professor, Department of Geography, Gutenberg University, Mainz (Germany) since 2010
• Head of Dendro Sciences Unit, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), ETH Domain, Birmensdorf (Switzerland) 2006–2009
• Research Scientist, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), ETH Domain, Birmensdorf (Switzerland) 2001–2006
• Postdoc, LDEO, Columbia University, New York (USA) 2000–2001
• Research Assistant, Department of Geography, University of Bonn (Germany) 1999–2000
• Ph.D. Student, Department of Geography, University of Bonn (Germany) 1995–199934

Education

• Habilitation in Geography, University of Bern (Switzerland) 2005
• Ph.D. in Geography, University of Bonn (Germany) 1999
• Diplom in Geography, University of Bonn (Germany) 1995

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. Archived from the original (pdf) on 2008-02-21.{{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. Archived from the original (PDF) on 2006-12-30.
• 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. Archived from the original (PDF) on 2007-02-21.
• 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. Archived from the original (PDF) on 2006-12-30.

External links

• "Bending the Hockey Stick". Retrieved 2007-02-24.
• "Natural Variability and Climate Sensitivity". December 2005. Retrieved 2007-02-24.