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The influence of anthropogenic climate change on tree-ring formation

PI: Brooke Rabe
Institution: University of Arizona
We want to know how tree-ring formation will be affected by increasing CO_2 atmospheric concentration in North America. We plan to drive a biological non-linear model of tree-ring formation with NCEP/NCAR reanalysis 2 data and with twentieth century global GCM output and compare simulated tree-ring chronologies. The tree-ring model has itself shown skill in simulating tree-rings when driven by observed meteorological data (Evans et al. 2006). If we are satisfied with our simulations, we will simulate tree-rings through the twenty first century using GCM output with greenhouse gas forcings.

The project is being undertaken by undergraduate Brooke Rabe under the auspices of Dr. Michael N Evans of the Laboratory of Tree-Ring Research. The work is funded by the National Science Foundation-Atmospheric Sciences Division and the Howard Hughes Medical Institute.

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    Lawrence Livermore National Laboratory  |  Physical & Life Sciences Directorate