Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Five-day oscillation in East African low-level jet

Nature volume 272, pages 708–709 (1978)Cite this article

Abstract

EASTERN edges of the continents are favourable for the deflection of tropical easterlies from the winter hemisphere to the summer hemisphere. Low-level southerly jet stream along the East African coast is the most pronounced manifestation of this deflected air current which feeds into the Indian monsoon current. We have subjected the jet stream data to a smoothing process to filter out noise and then found that this jet stream has a well marked 5-d periodicity. We discuss here whether this 5-d period is related to the well-known 5-d pulsations of the Indian monsoon activity.

This is a preview of subscription content, access via your institution

Access options

Buy this article

  • Purchase on Springer Link
  • Instant access to full article PDF
Buy now

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Asnani, G. C. Nature 214, 73–74 (1967).

    Article  ADS  Google Scholar 

  2. Newell, R. E. et al. The General Circulation of the Tropical Atmosphere and Interactions with Extra-tropical Latitudes 1 (MIT Press, Cambridge, Massachusetts, 1972).

    Google Scholar 

  3. Bunker, A. E. Proc. Symp. Met. Results of the Int. Indian Ocean Exped. 3–12 (1965).

  4. Findlater, J. Met. Mag. 95, 353–364 (1966).

    Google Scholar 

  5. Findlater, J. Geophys. Mem. No. 115, (HMSO, London, 1971).

    Google Scholar 

  6. Washington, W., Daggupatty, S. Mon. Weath. Rev. 103, 105–144 (1975).

    Article  ADS  Google Scholar 

  7. Krishnamurti, T. N. et al. J. atmos. Sci. 33, 2350–2362 (1976).

    Article  ADS  Google Scholar 

  8. Jenkins, G. M. & Watts, D. G. Spectral Analysis and its applications (Holden-Day, San Francisco, 1968).

    MATH  Google Scholar 

  9. Eliot, J. Ind. met. Mem. 6, 89–160 (1895).

    Google Scholar 

  10. Frolow, S. Bull. Am. met. Soc. 23, 239–254 (1942).

    Article  Google Scholar 

  11. Palmer, C. E. & Ohmstede, W. D. Tellus 8, 495–507 (1956).

    Article  ADS  Google Scholar 

  12. Madden, R. & Julian, P. J. atmos. Sci. 29, 1464–1469 (1972).

    Article  ADS  Google Scholar 

  13. Misra, B. M. Ind. J. met. Geophys. 24, 251–256 (1973).

    Google Scholar 

  14. Malurkar, S. L. Ind. J. met. Geophys. 3, 303 (1953).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Meteorology, University of Nairobi, Kenya

    T. NGARA & G. C. ASNANI

Authors
  1. T. NGARA
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. C. ASNANI
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

NGARA, T., ASNANI, G. Five-day oscillation in East African low-level jet. Nature 272, 708–709 (1978). https://doi.org/10.1038/272708a0

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1038/272708a0

This article is cited by

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Advanced search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing