Academic Journal
Data assimilation at local scale to improve CFD simulations of atmospheric dispersion: application to 1D shallow-water equations and method comparisons
| العنوان: | Data assimilation at local scale to improve CFD simulations of atmospheric dispersion: application to 1D shallow-water equations and method comparisons |
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| المؤلفون: | Defforge, Cécile, Carissimo, Bertrand, Bocquet, Marc, Armand, Patrick, Bresson, Raphaël |
| المساهمون: | Centre d'Enseignement et de Recherche en Environnement Atmosphérique (CEREA), École nationale des ponts et chaussées (ENPC)-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| المصدر: | ISSN: 0957-4352. |
| بيانات النشر: | CCSD Inderscience |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 3D-Var, shallow water model, boundary conditions, Data assimilation, local scale simulation, back and forth nudging algorithm, iterative ensemble Kalman smoother, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDE.IE]Environmental Sciences/Environmental Engineering |
| الوصف: | International audience ; Atmospheric dispersion modelling requires meteorological inputs over local domains with possibly complex topographies. These local wind fields may be difficult to simulate with CFD models, in particular because of their sensitivity to geometrical features and to model inputs, especially the boundary conditions which are generally provided by larger-scale models or measurements. Using data assimilation, a few measurements inside the domain could add information to the imprecise boundary conditions and thus greatly enhance the precision of the dispersion simulations. Three data assimilation techniques (3DVar, the back and forth nudging algorithm, and the iterative ensemble Kalman smoother) have been adapted to local scale simulations by taking boundary conditions into account instead of initial conditions for which they are usually applied. Their performances have been evaluated at small scales, with a simple representation of the atmosphere into two layers, using 1D solution of the shallow-water equations. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1504/IJEP.2018.099151 |
| الاتاحة: | https://hal.science/hal-02131529 https://hal.science/hal-02131529v1/document https://hal.science/hal-02131529v1/file/authorFinalVersion.pdf https://doi.org/10.1504/IJEP.2018.099151 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.D42395A7 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1504/IJEP.2018.099151 |
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