Data Publications

Dai Global Palmer Drought Severity Index (PDSI)

  • Dai Global Palmer Drought Severity Index (PDSI)
  • NCAR_DS299.0
  • Dai, A. and T. Zhao, 2016: Uncertainties in historical changes and future projections of drought. Part I: estimates of historical drought changes. Climatic Change, 2, 0-0 (DOI: 10.1007/s10584-016-1705-2), URL: Dai, A., 2013: Increasing drought under global warming in observations and models. Nature Climate Change, 3, 52-58 (DOI: 10.1038/nclimate1633), URL: Dai, A., 2011: Drought under global warming: A review. Wiley Interdisciplinary Reviews: Climate Change, 2, 45-65 (DOI: 10.1002/wcc.81), URL: Dai, A., 2011: Characteristics and trends in various forms of the Palmer Drought Severity Index (PDSI) during 1900-2008. J. Geophys. Res., 116, AGU:D12115 (DOI: 10.1029/2010JD015541), URL: Dai, A., K. E. Trenberth, and T. Qian, 2004: A global data set of Palmer Drought Severity Index for 1870-2002: Relationship with soil moisture and effects of surface warming. J. Hydrometeorology, 5, 1117-1130, URL:
  • This dataset consists of monthly Palmer Drought Severity Index (PDSI) over global land areas on a 2.5 degree grid computed using observed monthly surface air temperature and precipitation, plus other surface meteorological forcing data for the self calibrating PDSI Penman Monteith (sc_PDSI_pm) case. The PDSI can be used as a measure of surface aridity anomalies and changes on seasonal to longer time scales. It is correlated with observed soil moisture and water storage variations over land.
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