Climate History Network

A network of interdisciplinary scholars studying past climate change

Historic Nature of Western Snowpack Declines

A new study published in Science by Gregory Pederson et al. employs dozens of tree-ring chronologies to reconstruct run-off in the major watersheds of the western United States (Colorado, Columbia, and Missouri) over the past 800 years.  While pointing to some parallels with historic megadroughts, particularly in the late 16th century, the authors find that “late 20th century snowpack reductions are almost unprecedented in magnitude across the northern Rocky Mountains and in their north-south synchrony across the cordillera.”


About Sam White

Assistant Professor of History at the Ohio State University

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This entry was posted on August 3, 2011 by in Publications.
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