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The Palmer drought index, sometimes called the Palmer drought severity index (PDSI), is a regional drought index commonly used for monitoring drought events and studying areal extent and severity of drought episodes. [1] The index uses precipitation and temperature data to study moisture supply and demand using a simple water balance model. [1 ...
These droughts continued from the 1940s drought in the Southwestern United States, New Mexico and Texas during 1950 and 1951; the drought was widespread through the Central Plains, Midwest and certain Rocky Mountain States, particularly between the years 1953 and 1957, and by 1956 parts of central Nebraska reached a drought index of −7, three ...
Palmer Drought Severity/Drought Monitor (2003–2022) – regional map (updated weekly, utilizing the National Oceanic and Atmospheric Administration (NOAA)'s Palmer drought index until May 13, 2016, and TWC's in-house Drought Monitor product thereafter) showing areal extent and severity of drought incidents
The study, published in Science Advances, found that evaporation accounted for 61% of drought severity in the West from 2020 to 2022, while reduced precipitation contributed 39%.
It was a year characterized by extreme drought. From North America to Africa to Europe to Asia, huge swaths of the planet were parched in 2022. 2022 was the year of drought
Palmer drought index (sometimes called the Palmer drought severity index (PDSI)): a regional drought index commonly used for monitoring drought events and studying areal extent and severity of drought episodes. [28] The index uses precipitation and temperature data to study moisture supply and demand using a simple water balance model. [28] [29 ...
Palmer Drought Severity Index (PDSI). Proposed by W. C. Palmer in 1965, [9] PDSI is extensively used in the US since then; [10] Standardized Precipitation Index (SPI) was proposed by McKee et al. in 1993; [11] Reclamation Drought Index; deciles. Many practically used indices were created ad-hoc.
Rarely has drought been as serious or extensive as the 1999-2004 episode. [3] This was the worst drought for at least a hundred years in parts of the Canadian Prairies. Well below normal precipitation was reported in areas of Alberta and Saskatchewan for more than four consecutive years extending from autumn 1999 to spring 2004.