Phenology, 12" H x 28" W
Text: Phenology is the study of the timing of natural
events. Phenological records provide comparisons between years and among
geographic regions. Examples include the date of emergence of leaves and
flowers, the first appearance of migratory birds. Because many such phenomena
are very sensitive to small variations in climate, especially temperature,
phenological records can be a useful proxy for temperature in historical
study of climate change.