Palmer drought severity index

{
  "id": "MLC-T-MET-001978",
  "term": "Palmer drought severity index",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A standardized index that measures the severity of drought conditions by accounting for precipitation, temperature, and local available water content. It uses a water balance model to determine moisture anomalies over a region. Values range from -4.0 or less (extreme drought) to +4.0 or more (extreme wetness).",
    "(Abbrev. PDSI) - an index used to gage the severity of drought conditions by using a water balance equation to track water supply and demand. This index is calculated weekly by the National Weather Service."
  ],
  "abbreviation": "PDSI",
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/palmer-drought-severity-index/"
}