Tree ring dating and climate change
Tree growth depends upon local environmental conditions.In some areas the limiting factor for growth is water availability, in other areas (especially at high latitudes) it is the length of the growing season.Click on the links below to go to these activities Looking for online content that can be used for a climate change education course or module?Pages linked below can be used to support an introductory climate change education for either a unit or a full..Leaders from 192 nations of the world are trying to make an agreement about how to limit emissions of heat-trapping greenhouse gases, mitigate climate change, and adapt to changing environmental conditions...Climate in your place on the globe is called regional climate.The study of the growth of tree rings is known as dendrochronology.The study of the relationship between climate and tree growth in an effort to reconstruct past climates is known as dendroclimatology.
Tree ring data is only collected outside of the tropics.
Subtle changes in the thickness of the rings over time indicate changes in length of, or water availability during, the growing season.
Each year, a tree adds to its girth, with the new growth being called a tree ring.
These methods also make highly localized analyses possible.
For example, archaeologists use tree rings to date timber from log cabins and Native American pueblos by matching the rings from the cut timbers of homes to rings in very old trees nearby.Trees in temperate latitudes have annual spurts of growth in the summer and periods of dormancy in the winter, which creates the distinctive pattern of light and dark bands.