My interests are in climate variability across a wide range of time scales. I’m particularly interested in how present day climate differs from climates in the past, and what may have caused climates to change. I have written or edited eleven books on climatic change and paleoclimatology, including Paleoclimatology: Reconstructing Climates of the Quaternary , and I‘ve authored over 120 articles on these topics. My research group is supported by grants from NSF, NOAA, and the Department of Energy. If you are interested in graduate or post-doctoral research in the Climate System Research Center, contact me via email.
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An Analysis of Past and Future Changes in the Ice Cover of Two High-Arctic Lakes Based on Synthetic Aperture Radar (SAR) and Landsat Imagery (with Timothy L. Cook), Arctic, Antarctic, and Alpine Research (2010)
Space-borne remotely sensed data can provide valuable insight into cryospheric processes in remote high-latitude regions...
Recent changes in freezing level heights in the Tropics with implications for the deglacierization of high mountain regions (with F. Keimig, H. F. Diaz, and D. R. Hardy), Geophysical Research Letters (2009)
The height of the freezing level in the tropical atmosphere (the free air 0°C isotherm)...
Climate change scenario for Costa Rican montane forests (with A. V. Karmalkar and H. F. Diaz), Geophysical Research Letters (2008)
Tropical montane cloud forests are characterized by persistent immersion in clouds, an important source of...
Evidence for a widespread climatic anomaly at around 9.2 ka before present (with D. Fleitmann, M. Mudelsee, S. J. Burns, J. Kramers, and A. Matters), Paleoceangraphy (2008)
The 8.2 ka event was triggered by a meltwater pulse (MWP) into the North Atlantic...
Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia (with M. E. Mann, Z. Zhang, M. K. Hughes, S. K. Miller, S. Rutherford, and F. Ni), Proceedings of the National Academy of Sciences, USA (2008)
Following the suggestions of a recent National Research Council report [NRC (National Research Council) (2006)...