This collaborative project is collecting paleoclimate proxy daya from locations in Southern Hemisphere tropical and mid-latitude locations and using these data to constrain global circulation model (GCM) simulations of climate change. The research aims include 1) developing a continuous record of Holocene climate change near the largest tropical ice cap, Peru’s Quelccaya Ice Cap; 2) tracking Little Ice Age climate conditions over a broader area of the Andes; and 3) using a GCM to evaluate which mechanistic hypotheses explain the geographical and temporal patterns of reconstructed paleoclimate fluctuations. Results thus far from this research include: Kelly et al., 2012, doi.org/10.1130/G33430.1; Kelly, 2011, doi.org/10.1016/j.quaint.2012.08.550; and Kelly et al., 2008, AGU Fall Meeting. My collaborators on this project are Yarrow Axford (Northwestern University), Thomas Lowell (University of Cincinnati) and Raymond Pierrehumbert (University of Chicago).
In addition to developing paleoclimate data near Quelccaya, I determined a low-latitude, high-altitude 10Be production rate using radiocarbon as an independent dating method. This production rate will be published here: Kelly et al., accepted. This 10Be production-rate calibration is in collaboration with the NSF-funded initiative CRONUS-Earth.
Funding for my Peru research is from NSF (EAR-1003460), CRONUS-Earth, the Lamont Climate Center, the Comer Science and Education Foundation and Dartmouth College.