Examining the Utility of Differing Polarimetric Radar Estimation Methods of Planetary Boundary Layer Depth for Locations Displaced from the Radar Site

Gathering an accurate depiction of the evolution of the planetary boundary layer, especially its depth, has important applications to numerous areas of study, such as pollution dispersion, momentum fluxes, and wildfire forecasting. Traditionally, radiosondes and lidars have been used to ascertain the depth of the boundary layer. However, recent work has demonstrated the utility of the operational weather radar network in estimating boundary layer height using quasi-vertical profiles (QVPs). Most of this work has focused on comparing QVP estimates to radiosonde data launched from a location in close proximity to the radar. This study aims to test the validity of these radar estimates for locations that are farther displaced away from the radar site. Balloons launched from the United States Naval Academy will be compared with QVP estimates from the two neighboring radar sites (KLWX and KDOX), both of which are approximately 90 km away from The Academy. A case study from this project has shown that the two radars produced different estimates, with KLWX providing a more accurate estimate. A large number of additional launches with varying times of year and meteorological conditions will be added to this case study for more statistically robust results. In addition, sector-QVPs and column vertical profiles (CVPs) will be tested to see if these radar estimates can be improved upon for locations farther away from the radar.