Description
This is a static historical dataset for global land areas capturing the near-historical risk from extreme cold anomalies over a 30 year period using the daily mean windchill temperature.
Technical Description
The Extreme Cold - Historical Risk, Anomaly product provides valuable insights into the frequency of extreme cold actuals across the globe in a 30-year time period from 1992-2021. This product seek to identify global areas where extreme cold conditions may have presented risks to human health, assets, agriculture, water resources, and wildlife.
The product's extreme_cold_anomaly_frequency field detects locations experiencing below freezing temperatures that
were concurrently below the normal conditions for that area. It considers regional acclimatization and ensures an
absolute baseline for classifying extreme cold events.
This dataset contains the following fields:
- extreme_cold_anomaly_frequency: Frequency of extreme cold occurrence at pixel locations over the baseline time period where the mean daily windchill is below the "Low Risk" threshold (<32°F, <0°C) AND below the 5th baseline percentile windchill for that location. For instance, a value of 0.5 would indicate that half of the days were under anomalous extreme cold conditions for that location. This is a value between 0.0 and 1.0.
- extreme_cold_anomaly_risk_class: The extreme cold 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_cold_anomaly_frequency field, exclusive of '0' values.