Abstract: A variational method for retrieval of the three-dimensional wind field from single-Doppler radar observations is developed and tested. The method uses the conservation equation for reflectivity and the continuity equation ...

Abstract: adiosonde observations employed in real-time numerical weather prediction (NWP) applications are disseminated through the Global Telecommunication System (GTS) using alphanumeric codes. These codes do not include information ...

Abstract: Four methods for retrieval of the horizontal wind field are described and compared using single-Doppler observations of a sea-breeze front measured during the Convective and Precipitation/Electrification Experiment. The ...

Abstract: n analysis of the impact of GPS radio occultation observations on Environment Canada?s global deterministic weather prediction system is presented. Radio occultation data, as any other source of weather observations, have ...

Abstract: This study examines the linearization properties of a simplified planetary boundary layer parameterization based on the vertical diffusion equations, in which the exchange coefficients are a function of the local Richardson ...

Abstract: bserving system experiments (OSEs) are commonly used to quantify the impact of different observation types on forecasts produced by a specific numerical weather prediction system. Recently, methods based on degree of freedom ...

Abstract: The authors address the problem of optimization of the microphysical information extracted from a simulation system composed of high-resolution numerical models and multiparameter radar data or other available measurements. ...

Abstract: Microphysical schemes based on the scaling normalization of the particle size distribution (PSD) are cast into a variational data assimilation method to assess their ability to retrieve the precipitation structure and ...

Abstract: his study examines the assimilation of near-surface wind observations over land to improve wind nowcasting and short-term tropospheric forecasts. A new geostatistical operator based on geophysical model output statistics ...

Abstract: Real-time horizontal wind observations from the National Oceanic and Atmospheric Administration?s (NOAA?s) Profiler Network (NPN) are assessed in preparation for their assimilation in the Canadian Meteorological Centre ...