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Evaporative Demand Drought Index

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historical EDDI map from January 2026 NOAA EDDI 2026-01-28.png
historical EDDI map from January 2026

The Evaporative Demand Drought Index (EDDI) is an experimental tool for monitoring and early warning of drought conditions. It assesses how unusual the atmospheric evaporative demand, also referred to as "the thirst of the atmosphere", is for specific locations over various time periods. [1] [2]

See also

References

  1. ↑ Hobbins, Michael T.; Wood, Andrew; McEvoy, Daniel J.; Huntington, Justin L.; Morton, Charles; Anderson, Martha; Hain, Christopher (1 June 2016). "The Evaporative Demand Drought Index. Part I: Linking Drought Evolution to Variations in Evaporative Demand". Journal of Hydrometeorology. 17 (6): 1745–1761. doi:10.1175/JHM-D-15-0121.1.
  2. ↑ "Evaporative Demand Drought Index (EDDI): NOAA Physical Sciences Laboratory". Home. 2018-11-25. Retrieved 2025-07-17.
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