Mexican Drought Atlas

Spanish Conquest Drought 1521-1524
June-August PDSI

Welcome to the Mexican Drought Atlas.  This web application provides access to summer (June-August) reconstructions of the self-calibrating Palmer Drought Severity Index (PDSI) on a 0.5° latitude/longitude grid centered over Mexico from AD 1400-2012.  The reconstructions are derived from 252 tree-ring chronologies over subtropical North America.  For further details on the reconstructions, see Stahle et al. (2016, link below).

Maps and time series can be created using tools under the "Maps" and "Time Series" menus, respectively.  For details on how to create maps and time series, see the "Help" menu.  An animation that runs through each year of the reconstruction from AD 1400-2012 is available via the link below.

Questions, comments, or suggestions may be sent to Dorian J. Burnette.

Citation:  Stahle, D.W., E.R. Cook, D.J. Burnette, J. Villanueva, J. Cerano, J.N. Burns, D. Griffin, B.I. Cook, R. Acuña, M.C.A. Torbenson, P. Szejner, and I.M. Howard, 2016:  The Mexican Drought Atlas:  Tree-ring reconstructions of the soil moisture balance during the late pre-Hispanic, colonial, and modern eras.  Quaternary Science Reviews, 149, 34-60. [Download pdf]

The entire dataset can be downloaded from NOAA Paleoclimatology.

Scheduled Downtime:  This server may be down for maintenance on Saturday following the 2nd Tuesday of the month and any Sunday from 12-8 a.m. Central Time (0600-1400 UTC or 0500-1300 UTC when the U.S. is on standard and daylight savings time, respectively).