We extend our gratitude to Dr. Paul Roundy, Dr. Anantha Aiyyer, Dr. Ademe Mekonnen, David Vollaro, and Gareth Berry for their help and discussions during this research. The ECMWF data were obtained from the National Center for Atmospheric Research (NCAR), which is supported by the National Science Foundation. We are also grateful to Joey Comeaux of NCAR for his help with reading this data. The National Science Foundation supported this research through Grant ATM0513428.
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