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Excitation of low-level jet as seen by GOES (I-O) satellite off the Somali coast

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Abstract

The intensification of a low-level jet off the Somali coast, as observed through GOES (I-O) satellite during Indian summer monsoon 1979 has been studied. Excitation of Low-level cross-equatorial flow in the western Indian ocean results from an interaction between extratropical perturbations moving eastward across the South African-Malgassy region of the Southern Hemisphere. This excitation occurs 2–3 days after the first appearance of a northward propagation cold front across the South African-Malgassy region. Intensification of cross-equatorial flow is followed by an increase in rainfall activity along the west coast of India after 3–4 days. The study reveals that this association can be used to forecast an increase in rainfall activity along the west coast of India 5–7 days in advance.

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References

  • Anderson, D. L. T. (1976), The low-level jet as a western boundary layer,M on.Weather Rev.,104: 907–921.

    Article  Google Scholar 

  • Ardanuy, P. (1979), On the observed diurnal oscillation of the Somali jet;Mon. Weather Rev.,107: 1694–1700.

    Article  Google Scholar 

  • Bannon, P.R. (1979), On the dynamics of East African Jet II: Jet transient;J.Atmos.Sci.,36: 2153–2168.

    Article  Google Scholar 

  • Cadet, D. and Desbois, M. (1981), A case study of a fluctuation of the Somali jet during the Indian summer monsoon;Mon.Weather Rev.,109: 182–187.

    Article  Google Scholar 

  • Cadet, D., Sommeria, G. and Reyes, S. (1981), Early results form the Balsamine experiment; International conference on early results of FGGE and largescale aspects of its monsoon experiment, International Council of Scientific Unions, WMO, Geneva, Tallahassee, Florida, USA 12-4 12-11.

    Google Scholar 

  • Crozet, P., Desbois, M., Semery, A. and Sitbon, P. (1979), Champs de Vent deduite des deplacement des nuages mesures a partir d’images successive du satellite geostationaire GOES I-O au-dessus de 1 ocean Indian du 16 Mai au 7 Juliet 1979, Notes LMD n ° 97, Lab de Meteorl. Dyn. Paris.

  • Findlater, J. (1969), A major low-level air current near the Indian Ocean during the northern summer;Q.J.R. Meteor.Soc,95: 362–380.

    Article  Google Scholar 

  • Findlater, J. (1978), Observational aspects of the low—level cross-equatorial jet stream of the western Indian Ocean in:Monsoon dynamics (ed) T.N. Krishnamurti, Birkhauser Florida State University, USA: 1251–1262.

    Chapter  Google Scholar 

  • Findlater, J. (1981), Low Level airflow over Kenya and rainfall over India in:Monsoon dynamics (ed) Sir James Lighthill and Prof. R.P. Pearce, Cambridge University Press, London: 309–319.

    Chapter  Google Scholar 

  • Hart, J. E. (1978), On the theory ot the East African low-level jet stream in: Monsoon dynamics(ed) T.N. Krishnamurti, Birkhauser: 1263–1282.

  • Krishnamurti, T. N. and Bhalme, H.N. (1976), Oscillation of a monsoon system, Part I: Observational aspects,J.Atmos.Sci.,33: 1937–1954.

    Article  Google Scholar 

  • Krishnamurti, T. N., Molinari, J. and Pan, H.L. (1976), Numerical simulation of the Somali jet;J.Atmos.Sci.,33: 2350–2362.

    Article  Google Scholar 

  • Mahajan. P. N. and Deshpande, V.R. (1986), Satellite-derived cloud motion vectors for monitoring lower and upper tropospheric monsoon circulation during summer Monex 1979; Vayu Mandai, 16, 3 &4: 6–9.

    Google Scholar 

  • Mahajan, P.N., Mujumdar, V.R. and Ghanekar, S.P. (1986), low-level winds over the western Indian Ocean as observed by Indian Ocean satellite(GOES) during the summer Monex of 1979;Current Science, 55,18: 912–914.

    Google Scholar 

  • Mahajan, P.N., Mujumdar, V.R. and Ghanekar, S.P. (1986), The burst of Indian summer monsoon as revealed by GOES satellite during Monex 1979;Adv. Atmos. Sci.,3: 514–519.

    Article  Google Scholar 

  • Rao, G.V. and Haney, J.L. (1982), Kinematic and thermal structure of two surges of flow in the Mozambique channel area,Q.J.R. Meteor.Soc,108: 957–974.

    Article  Google Scholar 

  • Sikka, D.R. and Gray, W.M. (1981), On the linkage of the genesis of monsoon disturbances and cyclones in the north Indian Ocean with the passage of baroclinic waves across the southwest Indian Ocean; International Conference on scientific results of monsoon experiment, International Council of Scientific Unions, WMO, Geneva, Denpassar, Bali, Indonesia: 4–29 4–34.

    Google Scholar 

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Authors and Affiliations

  1. Indian Institute of Tropical Meteorology, 411005, Pune, India

    P. N. Mahajan, V. R. Mupmdar & S. P. Ghanekar

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  1. P. N. Mahajan
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  2. V. R. Mupmdar
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  3. S. P. Ghanekar
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Mahajan, P.N., Mupmdar, V.R. & Ghanekar, S.P. Excitation of low-level jet as seen by GOES (I-O) satellite off the Somali coast. Adv. Atmos. Sci. 6, 475–482 (1989). https://doi.org/10.1007/BF02659081

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  • DOI: https://doi.org/10.1007/BF02659081

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