Highlights ► Parameterization of orographic waves is included into a general circulation model. ► The main wave effects occur in the middle atmosphere of winter hemispheres. ► Wave effects may change planetary wave amplitudes in the middle atmosphere.

    Abstract Parameterization of dynamical and thermal effects of stationary orographic gravity waves (OGWs) generated by the Earth’s surface topography is incorporated into a numerical model of general circulation of the middle and upper atmosphere. Responses of atmospheric general circulation and characteristics of planetary waves at altitudes from the troposphere up to the thermosphere to the effects of OGWs propagating from the earth surface are studied. Changes in atmospheric circulation and amplitudes of planetary waves due to variations of OGW generation and propagation in different seasons are considered. It is shown that during solstices the main OGW dynamical and heat effects occur in the middle atmosphere of winter hemispheres, where changes in planetary wave amplitudes due to OGWs may reach up to 50%. During equinoxes OGW effects are distributed more homogeneously between northern and southern hemispheres.


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    Titel :

    Numerical modeling of inhomogeneous orographic wave influence on planetary waves in the middle atmosphere


    Beteiligte:

    Erschienen in:

    Advances in Space Research ; 51 , 11 ; 2145-2154


    Erscheinungsdatum :

    2012-12-27


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch