Summary
The average three-dimensional structure of monsoon depressions is represented mathematically as a quasi-geostrophic horizontal two-dimensional wave perturbation, having no tilt in vertical and in horizontal, with average wavelengths of 2000 km and 1500 km in the zonal and meridional directions, respectively. The wave amplitude is maximum at 700 mb and its vertical variation is represented by a polynomial function ofp.
The wave temperature, the zonal and meridional wind distributions in the zonal plane are compared with the observed distributions associated with monsoon depressions, and a good agreement between them is noticed. Vertical profiles of the convective heating are represented by polynomial functions ofp.
Zusammenfassung
Die durchschnittliche dreidimensionale Struktur von Monsun-Depressionen wird mathematisch als quasigeostrophische horizontale zweidimensionale Wellenstörung ohne Neigung in der Vertikalen und Horizontalen mit durchschnittlichen Wellenlängen von 2000 und 1500 km in zonalen und meridionalen Richtungen dargestellt. Die Wellenamplitude hat ihr Maximum im 700 mb-Niveau und ihre vertikale Änderung ist durch eine polynome Funktion vonp repräsentiert.
Die Temperaturwelle und die Verteilungen des zonalen und meridionalen Windes in der zonalen Fläche werden mit den beobachteten, mit Monsun-Depressionen verbundenen Verteilungen verglichen und in guter Übereinstimmung mit diesen gefunden. Vertikale Profile der konvektiven Erwärmung werden durch polynome Funktionen vonp dargestellt.
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Mishra, S.K., Chakraborty, D.R. & Desai, S.S. An analytic representation of the three-dimensional structure of monsoon depressions. Arch. Met. Geoph. Biocl. A. 31, 329–337 (1982). https://doi.org/10.1007/BF02258584
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DOI: https://doi.org/10.1007/BF02258584