Publication: The MesODiF package for gradient computations with the atmospheric model Meso-NH
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The MesODiF package for gradient computations with the atmospheric model Meso-NH

- Article in a journal -
 

Area
Geophysics

Author(s)
I. Charpentier

Published in
Environmental Modelling & Software

Year
2000

Abstract
The meso-scale meteorological model Mese-NH is able to simulate atmospheric events ranging from the meso-scale down to the micro-scale. It also allows for transport and diffusion of passive scalar quantities such as pollutants coming from the coupling with a chemical package. The MesODiF package was generated to complete Mese-NH with both a tangent Linear code and an adjoint code. The differentiation work, realized with respect to the state variables, is done on the adiabatic part of the code. Physical parameterizations are not taken into account yet. The linearized codes are efficient both in time and memory consumptions. In particular, checkpoint schemes and an appropriate differentiation of the Leap-Frog scheme of Mese-NH allow the computation of gradients on simulations with a physical meaning at a low CPU-time cost. Sensitivity analysis and variational data assimilation experiments are now attainable by the Mese-NH model.

AD Tools
Odyssee

AD Theory and Techniques
Adjoint

BibTeX
@ARTICLE{
         Charpentier2000TMp,
       doi = "10.1016/S1364-8152(00)00050-5",
       ad_area = "Geophysics",
       ad_tools = "Odyssee",
       ad_theotech = "Adjoint",
       author = "Charpentier, I.",
       title = "The {MesODiF} package for gradient computations with the atmospheric model {Meso-NH}",
       journal = "Environmental Modelling \& Software",
       year = "2000",
       volume = "15",
       number = "6--7",
       pages = "533--538",
       note = "Meeting on Air Pollution Modeling and Simulation, Paris, France, Oct, 1998",
       abstract = "The meso-scale meteorological model Mese-NH is able to simulate atmospheric events
         ranging from the meso-scale down to the micro-scale. It also allows for transport and diffusion of
         passive scalar quantities such as pollutants coming from the coupling with a chemical package. The
         MesODiF package was generated to complete Mese-NH with both a tangent Linear code and an adjoint
         code. The differentiation work, realized with respect to the state variables, is done on the
         adiabatic part of the code. Physical parameterizations are not taken into account yet. The
         linearized codes are efficient both in time and memory consumptions. In particular, checkpoint
         schemes and an appropriate differentiation of the Leap-Frog scheme of Mese-NH allow the computation
         of gradients on simulations with a physical meaning at a low CPU-time cost. Sensitivity analysis and
         variational data assimilation experiments are now attainable by the Mese-NH model.",
       issn = "1364-8152",
       id = "Charpentier2000TMp"
}


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