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documentation.
Tree Ring Laboratory from LDEO: Lamont-Doherty Earth Observatory of Columbia University
Monsoon Asia Drought Atlas
LDEO TRL Monsoon Asia Drought Atlas: Reconstruction of Palmer Drought Severity Index for Monsoon Asia based on tree ring data
Resolution: 2.5x2.5; Longitude: [61.25E,143.75E]; Latitude: [8.75S,56.25N]; Time: [1300,2005]; yearly
North American Drought Atlas 2004
LDEO TRL North American Drought Atlas 2004: Reconstruction of Palmer Drought Severity Index for the United States based on tree ring data
Resolution: 2.5x2.5; Longitude: [137.5W,57.5W]; Latitude: [17.5N,62.5N]; Time: [0002BC,2003]; yearly
NADAv2a-2008
LDEO TRL NADAv2a-2008: North American Drought Atlas Version 2a, 2008, North American Summer PDSI Reconstructions