This is a module of the University Corporation for Atmospheric Research (UCAR) and the National Oceanic and Atmospheric Administration pursuant to NOAA Award No. NA67WD0097. References herein to other Web pages, which may be linked to this module, specific commercial products, processes, or services by trade name, trademark, manufacturer, or otherwise do not constitute or imply an endorsement, recommendation, or favoring by UCAR. The user of this module understands that, with the exception of an employee or other authorized user of a UCAR sponsoring organization, UCAR may not be obligated to provide any support, consulting, training, or assistance of any kind with regard to the use of this module, or to provide any updates, revisions, or new versions. COMET® is a registered trademark of UCAR. ©1999, University Corporation for Atmospheric Research. All Rights Reserved.