Climate data guide content with tag PDSI(PDI)

  • Drought atlases from tree rings Drought atlases from tree rings
    • Years of record

    • to

    Tree-ring drought atlases provide a paleoclimate analog to modern drought indices, most commonly the Palmer Drought Severity Index (PDSI).  Produced on a regular lat-lon grid for regions such as North America, Europe, and Australia, these centuries-long datasets are convenient for comparisons with climate model experiments and historical data on human…

    Main variables and Earth System components

    Land Drought
  • Palmer Drought Severity Index (PDSI) Palmer Drought Severity Index (PDSI)
    • Years of record

    • N/A

    The Palmer Drought Severity Index (PDSI) uses readily available temperature and precipitation data to estimate relative dryness. It is a standardized index that generally spans -10 (dry) to +10 (wet). Maps of operational agencies like NOAA typically show a range of -4 to +4, but more extreme values are possible. The PDSI has been reasonably successful at…

    Main variables and Earth System components

    Land Drought