Acknowledgments

• Hurricane Discussion Group: Stephen E. Zebiak, Lisa Goddard, Adam Sobel, Brad Lyon, Yochanan Kunshnir, Jennifer Miller, Upmanu Lall, Hsin Hsing Chia, Lorenzo M. Polvani and Balaji Rajagopalan.

• David DeWitt (ECHAM4.5 data and post-processing), Michael Tippett (MATLAB and tracking routine), Cintia Uvo (MATLAB and statistics), Benno Blumenthal (Data Library), Sara Barone (maps).