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2023 appears to follow an upward trend in the North Atlantic/Caribbean named tropical cyclone count

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This year’s (2023) tropical cyclone season in the North Atlantic and Caribbean witnessed a relatively high number of named tropical cyclones: 20. In spite of the current El Niño, which tends to give lower numbers. But it appears to follow a historical trend for named tropical cyclones with an increasing number over time.

The number of North Atlantic/Caribbean named tropical cyclones in and the estimates based on the area with sea surface temperature above 25.6°C <span id="cite_ITEM-25351-0" name="citation"><a href="#ITEM-25351-0">"(Benestad,</a></span>. Model was calibrated on the 1900-1960 (grey shaded) period.
The number of North Atlantic/Caribbean named tropical cyclones in and the estimates based on the area with sea surface temperature above 25.6°C (Benestad, 2009).

The curve presented above is an update of the analysis presented in 2020 and posted here on RealClimate.

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References

  1. R.E. Benestad, "On tropical cyclone frequency and the warm pool area", Natural Hazards and Earth System Sciences, vol. 9, pp. 635-645, 2009. http://dx.doi.org/10.5194/nhess-9-635-2009