In this study a brief description of the methods and equipment used to obtain kite profile measurements is presented. Comparisons are made between the directly measured kite profiles and MOS theory predictions based upon mean meteorological measurements obtained at a single height. Significant deviations between observed and predicted profiles were discovered in some cases and the reasons behind these differences will be examined. Both the kite-observed and MOS-predicted refractivity profiles were used to compute propagation loss values, which were then compared to the actual microwave propagation measurements. This provided an opportunity to effectively verify the profiles obtained through different methods and to investigate the causes of differences between observed and predicted profile shapes. Spectral wave data obtained from two buoy platforms and the FLIP will be used to examine any sea-state dependent influences on the near-surface profile observations. Kite measurements obtained off San Clemente Island and in Monterey Bay, California, and off the Virginia coast will also be included in the presentation to expand the variety of environmental and hydrographic conditions included in the study and to illustrate profile differences between warm and cold water areas and wind-wave and swell dominated sea states.
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