Poster presents MODES, a software for the normal-mode function representation of the 3D global datasets. The software is available to atmospheric research community including suppport for its application to commonly used global NWP model and reanalysis data. MODES allows a diagnosis of the balanced and inertio-gravity (IG) circulation across many scales. In particular, the IG spectrum, which has only recently become observable in global datasets, can be studied simultaneously in the mass field and wind field and considering the whole model depth.

The software is written in Fortran and its application is controlled through namelists. The input data formats are NetCDF and GRIB while outputs can be written in NetCDF, binary or textual format. The applied libraries and default compiler are from the open-source domain. A limited understanding of Fortran suffices for the successful implementation of the software.

MODES outputs in nearly real time are available at http://meteo.fmf.uni-lj.si/MODES based on the operational prognostic model of ECMWF.

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*email: nedjeljka.zagar@fmf.uni-lj.si
*Preference: Poster