Broader view of North American climate over the past two millennia: Synthesizing paleoclimate records from diverse archives

Science Center Objects

Regional- to continental-scale paleoclimate syntheses of temperature and hydroclimate in North America are essential for understanding long-term spatiotemporal variability in climate, and for properly assessing risk on decadal and longer timescales. However, existing syntheses rely almost exclusively on tree-ring records, which are known to underestimate low-frequency variability and rarely ext...

Regional- to continental-scale paleoclimate syntheses of temperature and hydroclimate in North America are essential for understanding long-term spatiotemporal variability in climate, and for properly assessing risk on decadal and longer timescales. However, existing syntheses rely almost exclusively on tree-ring records, which are known to underestimate low-frequency variability and rarely extend beyond the last millennium. Meanwhile, many additional records from a variety of archives are available and hold the potential of broadening and enhancing our understanding of past climate in North America over the past two thousand years. We propose to bring together a diverse group of with expertise that spans the relevant natural archives for North America to, for the first time, pull together these disparate paleoclimate records into a unified database with a common format. This will enable us to take advantage of emerging multiproxy and time-uncertain reconstruction techniques to produce multiple-archive climate reconstructions for North America over the past two millennia.

 

Principal Investigator(s):

Nicholas McKay (Northern Arizona University)

Darrell Kaufman (Northern Arizona University)

Debra A Willard (Global Change Research and Development)

Gregory T Pederson (Northern Rocky Mountain Science Center)

Participant(s):

Hugo Beltrami (St. Francis Xavier University)

Casey Saenger (University of Washington)

Julia E. Cole (University of Arizona)

Sherilyn Fritz (University of Minnesota)

Edward R. Cook (Columbia University)

Michael N. Evans (University of Maryland)

Konrad Gajewski (University of Ottawa)

Valerie Trouet (University of Arizona)

Juan Carlos Herguera (Center for Scientific Research and Higher Education)

Nicholas Graham (Hydrologic Research Center)

Jeannine-Marie St. Jacques (University of Regina)

Brian Menounos (University of Northern British Columbia)

Michael Sigl (Desert Research Institute)