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An N-dimensional Fortran interpolation programme (NterGeo.v2020a) for geophysics sciences - application to a back-trajectory programme (Backplumes.v2020r1) using CHIMERE or WRF outputs

Abstract : An interpolation programme coded in Fortran for irregular N-dimensional cases is presented and freely available. The need for interpolation procedures over irregular meshes or matrixes with interdependent input data dimensions is frequent in geophysical models. Also, these models often embed look-up tables of physics or chemistry modules. Fortran is a fast and powerful language and is highly portable. It is easy to interface models written in Fortran with each other. Our programme does not need any libraries; it is written in standard Fortran and tested with two usual compilers. The programme is fast and competitive compared to current Python libraries. A normalization option parameter is provided when considering different types of units on each dimension. Some tests and examples are provided and available in the code package. Moreover, a geophysical application embedding this interpolation programme is provided and discussed; it consists in determining back trajectories using chemistry-transport or mesoscale meteorological model outputs, respectively, from the widely used CHIMERE and Weather Research and Forecasting (WRF) models.
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https://hal-insu.archives-ouvertes.fr/insu-03726963
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Submitted on : Thursday, July 28, 2022 - 2:27:36 PM
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Bertrand Bessagnet, Laurent Menut, Maxime Beauchamp. An N-dimensional Fortran interpolation programme (NterGeo.v2020a) for geophysics sciences - application to a back-trajectory programme (Backplumes.v2020r1) using CHIMERE or WRF outputs. Geoscientific Model Development, 2021, 14, pp.91-106. ⟨10.5194/gmd-14-91-2021⟩. ⟨insu-03726963⟩

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