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Dear colleagues,

With the deadline fast approaching for the AGU Fall Meeting abstract
submission (August 1st, 2018), please consider submitting an abstract to
session PP030 titled, “*Paleo-CO2 recontruction in the Phanerozoic*”, which
will be held in Washington D.C. December 10-14, 2018. This session welcomes
contributions examining the history of CO2 variations in the geological
past.

The abstract could be submitted here:
https://agu.confex.com/agu/fm18/prelim.cgi/Session/44031

Session Description:
The history of atmospheric CO2 variations in the geological past is
important to evaluate the role that greenhouse gases played during past
climate changes, which also provides a basis for future climate
projections. A wide range of paleo-CO2 proxies from marine and terrestrial
sedimentary archives have been developed and applied across various
timescales. Sources of uncertainty associated with these proxies may be
attributed to: 1) uncertainties in empirical calibration; 2) uncertainties
in regression model input variables; 3) uncertainties in measurement; 4)
uncertainties in age. The conversion of modern calibration to
paleo-application is also complicated by a lack of mechanistic
understanding of some of these paleo-CO2 proxies. This session aims to
bring together researchers that use paleo-CO2 proxies to understand
the CO2-climate
relationship, with particular focus on clarifying sources of uncertainty
inherent to specific proxies. We encourage contributions focused on the
development, validation, or application of CO2 proxies in paleoclimate
research.

*Confirmed Invited Speakers: *
Dana Royer, Wesleyan University
Sindia Sosdian, Cardiff University

*Conveners: *
Ying Cui, Dartmouth College
Yige Zhang, Texas A&M University
Brian Schubert, University of Louisiana at Lafayette
William Leukens, University of Louisiana at Lafayette