Groundhog oscillation and Global Change

A look back at groundhog research we published in the year 2001. The study authors were at the time in Pennsylvania:

The Groundhog Oscillation: Evidence of Global Change

by Andrew J. Gerrard, Christina M. Gerrard, Mark A. London, Keith A. Soldavin, Timothy J. Kane and Alan Freed

There is a fierce debate about whether the earth's climate is changing. In this paper we describe an overlooked — but reliable — remote sensing instrument that can provide crucially pertient information. We also describe an extensive long-term data set that was obtained by using the instrument…[see the entire article]