نتایج جستجو برای: nwp
تعداد نتایج: 938 فیلتر نتایج به سال:
In previous work [Kovalets, I., Andronopoulos, S., Bartzis, J.G., Gounaris, N., Kushchan, A., 2004. Introduction of data assimilation procedures in the meteorological pre-processor of atmospheric dispersion models used in emergency response systems. Atmospheric Environment 38, 457–467.] the authors have developed data assimilation (DA) procedures and implemented them in the frames of a diagnost...
One of the goals of the National Science Foundation Engineering Research Center (ERC) for Collaborative Adaptive Sensing of the Atmosphere (CASA) is to improve storm-scale numerical weather prediction (NWP) by collecting data with a dense X-band radar network that provides high-resolution low-level coverage, and by assimilating such data into NWP models. During the first spring storm season aft...
A prototype thunderstorm nowcasting system, tentatively named iCAST (interactive Convective Analysis and Storm Tracking), is being developed at Environment Canada with an emphasis on optimizing the ‘human-machine mix’. The prototype aims to build on the strengths of the human forecaster in the thunderstorm nowcasting process while making the best use of machine computing capabilities. iCAST is ...
A new general polarimetric radar simulator for nonhydrostatic numerical weather prediction (NWP) models has been developed based on rigorous scattering calculations using the T-matrix method for reflectivity, differential reflectivity, specific differential phase, and copolar cross-correlation coefficient. A continuous melting process accounts for the entire spectrum of varying density and diel...
Abstract. In numerical weather prediction (NWP), sensitivity to initial conditions brings chaotic behaviors and an intrinsic limit predictability, but it also implies effective control in which a small signal grows rapidly make substantial difference. The Observing Systems Simulation Experiment (OSSE) is well-known approach study where “nature” synthesized by independent NWP model run. this stu...
ii Abstract One of the goals of the National Science Foundation Engineering Research Center (ERC) for Collaborative Adaptive Sensing of the Atmosphere (CASA) is to improve storm-scale numerical weather prediction (NWP) by collecting data with dense X-band radar network which provides high-resolution low-level coverage, and by assimilating such data into NWP models. During the first spring storm...
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