We are grateful for comments on the manuscript by Courtney Schumacher, Robert Fovell, and two anonymous reviewers. The rainfall data used in this study were acquired as part of the Tropical Rainfall Measuring Mission. The algorithms were developed by the TRMM Science Team. The data were processed by the TRMM Science Data and Information System (TSDIS) and the TRMM Office; they are archived and distributed by the Goddard Distributed Active Archive Center. TRMM is an international project jointly sponsored by the Japan National Space Development Agency (NASDA) and the U.S. National Aeronautics and Space Administration (NASA) Office of Earth Sciences. The IFA average divergence profile was obtained from 3-hourly divergence profiles archived at tornado.atmos.colostate.edu/togadata/ifa_ data.html. We thank the Natural Sciences and Engineering Research Council of Canada, the Modeling of Global Chemistry for Climate (GCC) project, and the Canadian Foundation for Climate and Atmospheric Sciences (CFCAS) for their support. The NOAA/NCDC high-resolution radiosonde data were provided by the SPARC data center from their Web site (http://www.sparc.sunysb.edu/html/hres.html). We thank the British Atmospheric Data Center for access to the rawinsonde winds.
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