(4416976), J. K. C., (7305254), F. H. K., & (19657597), M. C. R. (2025). Monthly drought index for the conterminous United States: 6-month and 36-month Standardized Precipitation Evapotranspiration Index (SPEI) for 10 climate scenarios, 1950-2070.
Chicago Style (17th ed.) Citation(4416976), Jennifer K. Costanza, Frank H. Koch (7305254), and Matthew C. Reeves (19657597). Monthly Drought Index for the Conterminous United States: 6-month and 36-month Standardized Precipitation Evapotranspiration Index (SPEI) for 10 Climate Scenarios, 1950-2070. 2025.
MLA (9th ed.) Citation(4416976), Jennifer K. Costanza, et al. Monthly Drought Index for the Conterminous United States: 6-month and 36-month Standardized Precipitation Evapotranspiration Index (SPEI) for 10 Climate Scenarios, 1950-2070. 2025.