The authors wish to thank A. J. Mahajan, Raj Panda, and Kumaran Kalyanasundaram for their help in porting and optimizing the code on an SGI Origin 2000. Thanks are also due Ralph Petersen and William Raymond for their expert advice and interpretations of results and Robert Aune, Allen Lenzen, and Todd Schaack for visualization and verification tools. Special thanks are due Brad Hoggat and the anonymous reviewers for their enlightening scientific input. This research was supported under NOAA Grant NA67EC0100.
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