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Extreme Heat - Historical Risk, Global (v1.0)


This is a static historical dataset for global land areas capturing the near-historical risk from extreme heat over a 30 year period using the humidity-adjusted Heat Index.

heat, global, thermal, hazard, risk, agriculture, stress, historical, temperature
Temporal Extent:
1992-01-01 to 2022-01-01
11 km
Product Version:

Technical Description

The Extreme Heat Historical Risk product captures the recent near-historical risk of extreme heat events across the globe using well-established standardized thermal indices.
This extreme heat product seeks to identify areas across the globe where historically observed extreme heat events have posed risks to human life, and use standard quantitative metrics for capturing thermal stress, going beyond just air temperature. This product can be used to assess the frequency of extreme heat at different locations, or to identify relative risk across different regions at a single time horizon.

This dataset contains the following fields:

  • extreme_heat_probability: Probabilities (or alternatively frequencies) of extreme heat occurrence at pixel locations over the historical period of record used for calculation. Technically unitless but represents counts of extreme heat occurrences divided by the total number of data points.
  • avg_extreme_heat_days_per_year: The average number of days per year over the historical period of record used for calculation that are classified as extreme heat days. This is a value between 0-365.
  • extreme_heat_index: The extreme heat probabilities but rescaled to between 0 and 100 based on the minimum and maximum values in the map. This allows for a simple relative scoring between pixel locations based on their historical extreme heat risk values.