Contributors:Mukund Rao, Edward Cook, Benjamin Cook, Kevin Anchukaitis, Rosanne D’Arrigo, paul krusic, Allegra LeGrande
A copy of the Superposed Epoch Analysis (SEA) code developed in this paper to reproduce the results. Also includes the datasets used.
Contributors:Scott St. George, Sarah Appleton, Kurt Kipfmueller
Measurements of tree-ring widths from seven mountain hemlock (Tsuga mertensiana [Bong.] Carr.) sites in Crater Lake National Park, Oregon. Ring-width data are stored as text files in Tucson decadal format (http://www.cybis.se/wiki/index.php?title=Tucson_format). Measurements are total ring-widths in microns. The first three lines of each file contain metadata describing:
*Three-letter site code
Tree species code
Elevation (meters above sea level)
Latitude and longitude (decimal degrees)
First year of chronology
Chaco Tree ring data was provided by Guiterman et al. 2017. Historical tree ring data from the San Juan Basin is available on the International Tree Ring Data Bank (ITRDB): https://data.noaa.gov/dataset/international-tree-ring-data-bank-itrdb.
R code is provided to replicate these results.
Guiterman, C.H., Swetnam, T.W., Dean, J.S. 2016. Eleventh-century shift in timber procurement areas for the great houses of Chaco Canyon. PNAS 113(5): 1186-1190 10.1073/pnas.1514272112
Contributors:Scott Steinschneider, Keith Briffa, Upmanu Lall, Edward Cook
The contained files provide coding scripts in the R statistical programming environment that can be used to develop hierarchical Bayesian models for dendroclimatic standardization and climate reconstruction.