During the spring of 2002, the International H2O Project (IHOP) sought to resolve the kinematics of the dryline interface, particularly in the context of convective initiation. Ground-based (e.g., S-Pol, SMART-Radar, DOWs) and airborne-based (e.g., ELDORA) radar platforms accomplished this data collection. On May 22, 2002, in conjunction with these platforms, the 3-mm wavelength mobile radar from the University of Massachusetts at Amherst obtained very-high resolution RHI data cutting across a dryline in the eastern Oklahoma panhandle. The very narrow beamwidth (0.18 deg) of the antenna permitted very fine scale measurements across the dryline boundary, with vertical and range resolutions of 5 m and 30 m, respectively, at a distance 1 km from the vehicle.
The first portion of the paper will briefly consider different variational techniques for the synthesis of three-dimensional velocity vectors from multiple radar measurements of radial velocity. An Observation System Simulation Experiment (OSSE) will be presented to exhibit and verify these techniques. Composite observational analyses from all the aforementioned IHOP radar platforms will be presented in the remainder of the paper, utilizing the variational methods discussed earlier.