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Accumulated cyclone energy is calculated by summing the squares of the estimated maximum sustained velocity of tropical cyclones when wind speeds are at least tropical storm strength (≥ 34 kn; 63 km/h; 39 mph) [4] at recorded six-hour intervals. The sums are usually divided by 10,000 to make them more manageable.
English: Chart showing Accumulated Cyclone Energy Index compared to 30-year average Data source: 2024's record-breaking, destructive Atlantic hurricane season ends. Axios (27 November 2024). Archived from the original on 1 December 2024. "Data: Colorado State University"
The index is calculated every six hours and approximates the wind energy generated by all of the named tropical systems. ACE Index serves as harbinger of intense 2020 hurricane season Skip to main ...
While the number of tropical storms and hurricanes that form each year is important to track, experts say that the Accumulated Cyclone Energy (ACE) index is a more reliable way to quantify the ...
The warm waters and low shear expected could provide more than 200% of the normal Accumulated Cyclone Energy — a predictor of the number and strength of tropical systems.
The accumulated cyclone energy (ACE) index for the 2023 (seven basins combined), as calculated by Colorado State University (CSU) was 857.4 units, which was above the 1991–2020 mean of 770.2 units. [3] [4] The most active basin in the year was the North Atlantic Ocean, which had 20 named systems.
2 Seasons table: proposal for slightly more user-friendly arrangement and corrections
Another way to measure the hurricane season is to analyze each storm's power output, which meteorologists refer to as accumulated cyclone energy (ACE). The ACE of an entire hurricane season is ...