Laboratory of Tree-Ring Research, University of Arizona, Personal Home Page

email:	sheppard @ ltrr.arizona.edu
office:	105-C1 West Stadium
phone:	520-621-6474
office hours:	M,W 11:00

departments:	Geography and Regional Development Division of Community, Environment, and Policy in the Mel and Enid Zuckerman College of Public Health
interests:	Nitrogen and tree growth Cinder cone eruptions Image analysis of tree rings Urban environmental monitoring

Measuring and interpreting N in tree rings
Identifying multiple tree-ring responses to the eruption of Parícutin, Michoacán, México, with ramifications for Sunset Crater, Arizona
Improving use of reflected-light imaging techniques of conifer tree rings to reconstruct past summer rainfall in the Southwest
Environmental monitoring in urban areas with public health issues

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Laboratory of Tree-Ring Research http://www.ltrr.arizona.edu/ updated: 3 August, 2011 webmaster@ltrr.arizona.edu	© Arizona Board of Regents	Main Office: 105 West Stadium Tucson, AZ 85721 USA phone 520-621-1608 fax 520-621-8229