Tree-ring exercise.
Tree rings are a type of climate archive. Their use is based on the observation that the annual growth rates of trees depend on climate variables (precipitation, temperature, and CO2 gas content), and the growth rate can be easily measured by the thickness of annual rings. This is discussed in your Text on p. 24 and pp. 296-297.
Each year a growing tree adds a layer on the outside between the bark and old wood on the inside.
In this exercise, you will select one of the tree ring sections obtained from trees recently cut in the Portland area, and work through exercises using the Excel template provided by the link below. It is recommended that you work together in teams of two.
As some of you are new to Excel and will have to learn how to use the program, and as the exercise requires that you compare your results with others in mentor section, multiple weeks have been provided for you to work through the exercise.
The completed spreadsheets should be given to Olivia by emailing
to her (oliviawebster@gmail.com).
Late assignments will be graded down by 10% per calendar day they are late.