The author thanks Chris Kummerow and Jim Benedict for reading the manuscript and providing suggestions for improvement. Detailed comments given by anonymous reviewers are also appreciated. NOAA-interpolated OLR data and NCEP–NCAR Reanalysis data were provided by the NOAA Cooperative Institute for Research in Environmental Sciences (CIRES) Climate Diagnostics Center (CDC), Boulder, Colorado, from their Web site at http://www.cdc.noaa.gov/. This research is in part supported by NOAA’s office of Global Program Grant NA17RJ1228#15 and NASA’s Precipitation Program Grant NAG5-13694.
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