Sentences with phrase «ancient climate trends»
If you're studying ancient climate trends then you should be aware of the many intricacies of our planets ecosystem, making this question narrow in scope.
http://www.realclimate.org/ Not exact matches
The study, led by Michael E. Mann, a climatologist now at Pennsylvania State University, was the first to estimate widespread climate trends by stitching together a grab bag of evidence, including variations in ancient tree rings and temperatures measured in deep holes in the earth.