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Some aspects of the 30–50 day oscillation

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Abstract

The structure and interannual variability of the 30–50 day oscillation over the Indian region have been studied during the monsoon season. The power spectra of the zonal component of wind show large power in the 30–50 day time scale. The oscillation has a meridional wavelength of about 25° latitude and a slow northward phase speed of about 0.7° latitude per day. The oscillation also has some interannual variability. The periods are somewhat longer during the drought years.

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Authors and Affiliations

  1. Physical Research Laboratory, 380 009, Navrangpura, Ahmedabad, India

    S. V. Kasture & R. N. Keshavamurty

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  1. S. V. Kasture
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  2. R. N. Keshavamurty
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Kasture, S.V., Keshavamurty, R.N. Some aspects of the 30–50 day oscillation. Proc. Indian Acad. Sci. (Earth Planet Sci.) 96, 49–58 (1987). https://doi.org/10.1007/BF02842637

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  • DOI: https://doi.org/10.1007/BF02842637

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