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North American Drought Atlas PDSI Reconstructions, Cook et al.(2004)- Time Series Plots
In 2004, a new set of PDSI reconstructions with expanded spatial and temporal coverage
was released (Cook et al. 2004). The new grid, which can be seen below, includes 286 points in a
2.5 degree grid covering most of North America. The PDSI reconstructions are based on an expanded network of 835 tree-ring chronologies (602 western). The temporal coverage has been expanded to the maximum permitted by the available tree ring data, extending back nearly 2000 years for some locations.
For a complete dataset description visit the Drought Atlas website.

Click on grid points to select or deselect grid cells (multiple points can be selected for plotting),
or click red squares under Zone designations to select large groups of cells.
Click 'Plot Selected Data' when you have selected the point(s) you desire to see plotted.
Grid Point(s) Selected For Plotting
Click to download text files of PDSI reconstructions.
Map of Grid Sites
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Dividing Line
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http://www.ncdc.noaa.gov/paleo/newpdsi.html
Downloaded Tuesday, 29-Jul-2014 03:12:37 EDT
Last Updated Monday, 10-Nov-2008 13:17:49 EST by paleo@noaa.gov
Please see the Paleoclimatology Contact Page or the NCDC Contact Page if you have questions or comments.