Continental-Scale Temperature Variability during the Past Two Millennia: Supplementary Information

Moinuddin Ahmed; Kevin Anchukaitis; Brendan M. Buckley; Martina Braida; Hemant P. Borgaonkar; Asfawossen Asrat; Edward R. Cook; Ulf Büntgen; Brian M. Chase; Duncan A. Christie; Mark A. J. Curran; Henry F. Diaz; Jan Esper; Ze-Xin Fan; Narayan P. Gaire; Quansheng Ge; Joëlle Gergis; J. Fidel González-Rouco; Hugues Goosse; Stefan W. Grab; Nicholas Graham; Rochelle Graham; Martin Grosjean; Sami T. Hanhijärvi; Darrell S. Kaufman; Thorsten Kiefer; Katsuhiko Kimura; Atte A. Korhola; Paul J. Krusic; Antonio Lara; Anne-Marie Lézine; Fredrik C. Ljungqvist; Andrew M. Lorrey; Jürg Luterbacher; Valérie Masson-Delmotte; Andre E. Viau; Danny McCarroll; Joseph R. McConnell; Nicholas P. McKay; Mariano S. Morales; Andrew D. Moy; Robert Mulvaney; Ignacio A. Mundo; Takeshi Nakatsuka; David J. Nash; Raphael Neukom; Sharon E. Nicholson; Hans Oerter; Jonathan G. Palmer; Steven J. Phipps; Maria R. Prieto; Andres Rivera; Masaki Sano; Mirko Severi; Timothy M. Shanahan; Xuemei Shao; Feng Shi; Michael Sigl; Jason E. Smerdon; Olga N. Solomina; Eric J. Steig; Barbara Stenni; Meloth Thamban; Valerie Trouet; Chris S. M. Turney; Mohammed Umer; Tas van Ommen; Dirk Verschuren; Ricardo Villalba; Bo M. Vinther; Lucien von Gunten; Sebastian Wagner; Eugene R. Wahl; Heinz Wanner; Johannes P. Werner; James W. C. White; Koh Yasue; Eduardo Zorita

Continental-Scale Temperature Variability during the Past Two Millennia: Supplementary Information
Ahmed, Moinuddin
Anchukaitis, Kevin
Buckley, Brendan M.
Braida, Martina
Borgaonkar, Hemant P.
Asrat, Asfawossen
Cook, Edward R.
Büntgen, Ulf
Chase, Brian M.
Christie, Duncan A.
Curran, Mark A. J.
Diaz, Henry F.
Esper, Jan
Fan, Ze-Xin
Gaire, Narayan P.
Ge, Quansheng
Gergis, Joëlle
González-Rouco, J. Fidel
Goosse, Hugues
Grab, Stefan W.
Graham, Nicholas
Graham, Rochelle
Grosjean, Martin
Hanhijärvi, Sami T.
Kaufman, Darrell S.
Kiefer, Thorsten
Kimura, Katsuhiko
Korhola, Atte A.
Krusic, Paul J.
Lara, Antonio
Lézine, Anne-Marie
Ljungqvist, Fredrik C.
Lorrey, Andrew M.
Luterbacher, Jürg
Masson-Delmotte, Valérie
Viau, Andre E.
McCarroll, Danny
McConnell, Joseph R.
McKay, Nicholas P.
Morales, Mariano S.
Moy, Andrew D.
Mulvaney, Robert
Mundo, Ignacio A.
Nakatsuka, Takeshi
Nash, David J.
Neukom, Raphael
Nicholson, Sharon E.
Oerter, Hans
Palmer, Jonathan G.
Phipps, Steven J.
Prieto, Maria R.
Rivera, Andres
Sano, Masaki
Severi, Mirko
Shanahan, Timothy M.
Shao, Xuemei
Shi, Feng
Sigl, Michael
Smerdon, Jason E.
Solomina, Olga N.
Steig, Eric J.
Stenni, Barbara
Thamban, Meloth
Trouet, Valerie
Turney, Chris S. M.
Umer, Mohammed
van Ommen, Tas
Verschuren, Dirk
Villalba, Ricardo
Vinther, Bo M.
von Gunten, Lucien
Wagner, Sebastian
Wahl, Eugene R.
Wanner, Heinz
Werner, Johannes P.
White, James W. C.
Yasue, Koh
Zorita, Eduardo
Lamont-Doherty Earth Observatory
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Book/Journal Title:
Nature Geoscience
Supplementary information for http://hdl.handle.net/10022/AC:P:20649
Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.
Earth temperature
Climatic changes
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Moinuddin Ahmed, Kevin Anchukaitis, Brendan M. Buckley, Martina Braida, Hemant P. Borgaonkar, Asfawossen Asrat, Edward R. Cook, Ulf Büntgen, Brian M. Chase, Duncan A. Christie, Mark A. J. Curran, Henry F. Diaz, Jan Esper, Ze-Xin Fan, Narayan P. Gaire, Quansheng Ge, Joëlle Gergis, J. Fidel González-Rouco, Hugues Goosse, Stefan W. Grab, Nicholas Graham, Rochelle Graham, Martin Grosjean, Sami T. Hanhijärvi, Darrell S. Kaufman, Thorsten Kiefer, Katsuhiko Kimura, Atte A. Korhola, Paul J. Krusic, Antonio Lara, Anne-Marie Lézine, Fredrik C. Ljungqvist, Andrew M. Lorrey, Jürg Luterbacher, Valérie Masson-Delmotte, Andre E. Viau, Danny McCarroll, Joseph R. McConnell, Nicholas P. McKay, Mariano S. Morales, Andrew D. Moy, Robert Mulvaney, Ignacio A. Mundo, Takeshi Nakatsuka, David J. Nash, Raphael Neukom, Sharon E. Nicholson, Hans Oerter, Jonathan G. Palmer, Steven J. Phipps, Maria R. Prieto, Andres Rivera, Masaki Sano, Mirko Severi, Timothy M. Shanahan, Xuemei Shao, Feng Shi, Michael Sigl, Jason E. Smerdon, Olga N. Solomina, Eric J. Steig, Barbara Stenni, Meloth Thamban, Valerie Trouet, Chris S. M. Turney, Mohammed Umer, Tas van Ommen, Dirk Verschuren, Ricardo Villalba, Bo M. Vinther, Lucien von Gunten, Sebastian Wagner, Eugene R. Wahl, Heinz Wanner, Johannes P. Werner, James W. C. White, Koh Yasue, Eduardo Zorita, , Continental-Scale Temperature Variability during the Past Two Millennia: Supplementary Information, Columbia University Academic Commons, .

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