The science of reconstructing past climates by studying tree rings. As opposed to dendrochronology, which is the dating of past events by studying tree rings.
For example, analyzing tree-ring widths to determine how much rainfall fell per year long before weather records were kept.
1. Wide rings mean that there were good growing conditions that year; narrow rings mean bad conditions.
2. Click here to read an article that explains how tree-ring data was used to prove an Inuit historical assertion.
3. The word was coined by combining the Greek dendron, tree with the word climatology.