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Brief Communication Arising

Nature 451, E5 (21 February 2008) | doi:10.1038/nature06576; Received 2 July 2007; Accepted 19 November 2007

Is recent major hurricane activity normal?

Urs Neu1

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Arising from: Nyberg et al. Nature 447, 698–701 (2007); Nyberg et al. reply

The anomaly of the recent increase in Atlantic major hurricane activity (MHA) is controversial. From a reconstruction of past MHA, Nyberg et al.1 conclude that the present activity is not unusual by comparison with that of the past 270 years. However, here I estimate the uncertainty of average MHA in the hurricane record2 before 1945 and show that the reconstruction of Nyberg et al.1 differs strongly from that record, and probably overestimates past MHA. Owing to this and further reasons, I question whether their reconstruction provides an accurate basis for conclusions about past MHA.

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