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Dai Global Palmer Drought Severity Index (PDSI)

| DOI: 10.5065/D6QF8R93

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. Additionally, ensemble mean monthly sc_PDSI_pm data on a 2.5 degree grid has been calculated from 1900-2099 (for CMIP5) and 1900-2100 (for CMIP6) based on one historical and future (under RCP4.5 for CMIP5), and SSP2-4.5 (similar to RCP4.5) and SSP5-8.5 (similar to RCP8.5 for CMIP5) simulation by each of the 14 CMIP5 models and 25 CMIP6 models. These sc_PDSI_pm data from individual runs were simply averaged to produce the multiple model ensemble mean. 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.

Temporal Range:
1850-01-01 00:00:00 to 2018-12-31 23:00:00
Palmer Drought Severity Index
Data Types:
Spatial Coverage:
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=60S Northernmost=77.5N Detailed coverage information
Data Contributors:
Department of Atmospheric and Environmental Sciences, College of Arts and Sciences, State University of New York, Albany
Dai, A., 2021: Hydroclimatic trends during 1950–2018 over global land Climate Dynamics, In Press (DOI: 10.1007/s00382-021-05684-1).

Dai, A. and T. Zhao, 2016: Uncertainties in historical changes and future projections of drought. Part I: estimates of historical drought changes Climatic Change, In Press (DOI: 10.1007/s10584-016-1705-2).

Dai, A., 2013: Increasing drought under global warming in observations and models Nature Climate Change, 3, 52-58 (DOI: 10.1038/nclimate1633).

Dai, A., 2011: Characteristics and trends in various forms of the Palmer Drought Severity Index (PDSI) during 1900-2008 J. Geophys. Res., 116, D12115 (DOI: 10.1029/2010JD015541).

Dai, A., 2011: Drought under global warming: A review Wiley Interdisciplinary Reviews: Climate Change, 2, 45-65 (DOI: 10.1002/wcc.81).

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.

Total Volume:
265.96 MB
Data Formats:
Metadata Record:
Data License:
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