Abstract: Techniques to initialize the boundary layer in a numerical model with radar-derived wind fields are tested with simulated data of a gust front. Experiments show that Newtonian relaxation or ?nudging? applied to the velocity ...

Abstract: The adjoint method to retrieve the three-dimensional wind and thermodynamic fields is applied to single-Doppler observations of a gust front measured during the Phoenix II experiment. This method uses a fluid dynamics model ...

Abstract: Numerical simulations of three gust-front cases that occurred in northeastern Colorado during the summers of 1991 and 1992 am presented. The simulations are initialized with radar-derived winds and, for the two cases in ...

Abstract: The formation and evolution of convective rain and snow bands prior to and during the crash of Continental Airlines flight 1713 on 15 November 1987 at Denver Stapleton Airport are discussed. Convective rain occurred during ...

Abstract: The 10th Prospectus Development Team (PDT?10) of the U.S. Weather Research Program was charged with identifying research needs and opportunities related to the short?term prediction of weather and air quality in urban ...

Abstract: The Pentagon, and its 25,000+ occupants, represents a likely target for a future terrorist attack using chemical, biological, or radiological material released into the atmosphere. Motivated by this, a building-protection ...