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Extreme Heat - Anomaly, Projections, Decadal, Global (v1.0)


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

thermal, global, risk, heat index, projections, heat, extreme heat, regional, hazard, future, humidity, temperature, cmip6, anomaly
Temporal Extent:
2025-01-01 to 2095-01-01
11 km
Product Version:

Technical Description

The Extreme Heat Anomaly Projection product provides valuable insights into the frequency of extreme heat projections across the globe at a decadal timescale. This product seeks to identify global areas where heat conditions may present risks to human health, agriculture, water resources, and wildlife.

The product's extreme_heat_anomaly_frequency field detects locations experiencing moderately high temperatures that were concurrently above the normal conditions for that area. It considers regional acclimatization and ensures an absolute baseline for classifying extreme heat events.

This dataset contains the following fields:

  • extreme_heat_anomaly_frequency: Frequencies of extreme heat occurrence at pixel locations over the future time period where the mean daily heat index is above the USNWS "Caution" threshold (>80°F, > 26.7°C) AND above the 95th baseline percentile HI for that location. For instance, a value of 0.5 would indicate that half of the days were under anomalous extreme heat conditions for that location. This is a value between 0.0 and 1.0.
  • extreme_heat_anomaly_risk_class: The extreme heat anomaly risk classification for each value. Values are integers from 1 to 5 representing the following classes: Very Low Risk (1), Low Risk (2), Moderate Risk (3), High Risk (4), and Very High Risk (5). Values are categorized using the 44th, 67th, 84th, and 94th percentiles of the
  • extreme_heat_anomaly_frequency field, exclusive of '0' values.