Climate data guide content with tag Drought

  • CRU sc-PDSI (self-calibrating PDSI) over Europe & North America CRU sc-PDSI (self-calibrating PDSI) over Europe & North America

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    Maps of the monthly self-calibrating Palmer drought severity index (SCPDSI) have been calculated for the period 1901–2002 for the contiguous United States (20°–50°N and 130°–60°W) and Europe (35°–70°N, 10°W–60°E) with a spatial resolution of 0.5° × 0.5°

    Main variables and Earth System components

    Land Drought

    • Experts contributing reviews

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  • Drought atlases from tree rings Drought atlases from tree rings

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    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 populations…

    Main variables and Earth System components

    Land Drought
  • Palmer Drought Severity Index (PDSI) Palmer Drought Severity Index (PDSI)

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    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 quantifying long…

    Main variables and Earth System components

    Land Drought
  • Standardized Precipitation Evapotranspiration Index (SPEI) Standardized Precipitation Evapotranspiration Index (SPEI)

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    The Standardized Precipitation Evapotranspiration Index (SPEI) is an extension of the widely used Standardized Precipitation Index (SPI). The SPEI is designed to take into account both precipitation and potential evapotranspiration (PET) in determining drought. Thus, unlike the SPI, the SPEI captures the main impact of increased temperatures on water demand. Like the SPI…

    Main variables and Earth System components

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      • Timestep

      • Monthly, Seasonal, Annual

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  • Standardized Precipitation Index (SPI) Standardized Precipitation Index (SPI)

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    The Standardized Precipitation Index (SPI) is a widely used index to characterize meteorological drought on a range of timescales. On short timescales, the SPI is closely related to soil moisture, while at longer timescales, the SPI can be related to groundwater and reservoir storage. The SPI can be compared across regions with markedly different climates. It quantifies…

    Main variables and Earth System components

    Atmosphere Precipitation Land Drought

      • Formats

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      • Timestep

      • Monthly

      • Domain

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