PerspectiveClimate

Uncertainty in Hurricanes and Global Warming

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Science  17 Jun 2005:
Vol. 308, Issue 5729, pp. 1753-1754
DOI: 10.1126/science.1112551

Figures

  • Getting warmer.

    Annual mean SST anomalies relative to 1961 to 1990 (23) for 1870 to 2004, averaged over the tropical Atlantic (10°N to 20°N, excluding the Caribbean west of 80°W) (top) and the extratropical North Atlantic (30°N to 65°N) (bottom). Heavy lines are 10-year running means.

  • A measure of regional storm activity.

    The ACE index reflects the collective intensity and duration of tropical storms and hurricanes during a given hurricane season. Values are given as percentage of the median from 1951 to 2000; the white band indicates normal conditions, the blue is below normal, and the pink is above normal, according to NOAA. [Adapted from (1)]

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