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Observed air-sea interface conditions and a monsoon depression during MONEX-79

Während MONEX-79 beobachtete Verhältnisse im Luft-Meer-Grenzbereich und eine Monsun-Depression

Summary

The air-sea interface properties during the early stages of formation of a depression over East Central Arabian Sea during summer MONEX are examined by analyzing the ship data for air and sea temperatures, sea level pressures, sea state numbers and wind fields. Analysis of the data revealed a pronounced increase in sea-air temperature difference (2–4 °C) and this increase in the value is considered, obviously, to be due to a drop in the air temperature. The variations in the sea-air temperature difference and surface pressure are in opposite phase to each other. Some of the plausible mechanisms for the incipient development and movement of the depression are also discussed.

Zusammenfassung

Es werden die Verhältnisse im Luft-Meer-Grenzbereich im frühen Entwicklungsstand einer Depression über der östlichen zentralen Arabischen See während der Monsun MONEX-79 durch Analyse der Schiffsbeobachtungsdaten über Luft- und Meerestemperaturen, Luftdruck an der Oberfläche, Seegang und Wind untersucht. Diese Analyse zeigte eine ausgesprochene Zunahme der Temperaturdifferenz zwischen Meer und Luft (2–4 °C) und diese Zunahme erweist sich klar als durch eine Abnahme der Lufttemperatur verursacht. Die änderungen in der Temperaturdifferenz zwischen Meer und Luft und des Luftdrucks verlaufen in zueinander entgegengesetzter Phase. Einige einleuchtende Mechanismen für die beginnende Entwicklung und die Bewegung der Depression werden auch besprochen.

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References

  1. 1.

    Agnihotri, R. D., Sikka, D. R.: Oceanic Response to Tropical Cyclone: A Case Study with the Data Collected by INS Betwa in the Bay of Bengal. National Symposium on Early Results of Monsoon Experiments, New Delhi, 9–11 March, 1981.

  2. 2.

    Fisher, E. L.: Hurricanes and the Sea Surface Temperature: Part I. National Hurricane Research Project No. 8. U.S. Department of Commerce, Washington, D.C., 1957.

    Google Scholar 

  3. 3.

    Gray, W. M.: Tropical Cyclone Genesis. Paper No. 234. Dept. Atmos. Sci., Colorado State University, 121 pp., 1975.

  4. 4.

    Gray, W. M.: Hurricane: Their Formation, Structure and Likely Role in the Tropical Circulation. Dept. Atmos. Sci., Colorado State University, Fort Collins, CO 80523, 1980.

    Google Scholar 

  5. 5.

    Kraus, E. B., Hauson, H. P.: Air-Sea Interaction as a Propogator of Equitorial Ocean Surface Temperature Anomalies. J. Phys. Oceanogr.13, 130–138 (1983).

    Google Scholar 

  6. 6.

    Laevastu, T., et al.: Mesoscale Feedback from the Ocean to the Atmosphere in Coastal and Oceanic Frontal Regions. Environmental Prediction Research Facility (Navy) Montery, California, pp. 7–8, 1974.

    Google Scholar 

  7. 7.

    Palmen, E.: On the Formation and Structure of Tropical Hurricanes. Geophysica (Helsinki)3, 26–38 (1948).

    Google Scholar 

  8. 8.

    Pisharoty, P. R.: Sea-Surface Temperature and Monsoon. Monsoon Dynamics (James Hight Hill, R. P. Pearce, eds.), pp. 238–251. London: University Press 1981.

    Google Scholar 

  9. 9.

    Pyke, C. B.: On the Role of Air-Sea Interaction in the Development of Cyclones. Bull. Amer. Met. Soc.46, 4–8 (1965).

    Google Scholar 

  10. 10.

    Ramage: The Typhoons of October 1970 in the South China Sea: Intensification, Decay and Ocean Interaction. J. Appl. Met.13, 739–751 (1974).

    Google Scholar 

  11. 11.

    Sikka, D. R.: Some Aspects of the Life History, Structure and Movement of Monsoon Depressions. Pageoph.115, 1501–1529 (1977).

    Google Scholar 

  12. 12.

    Tisdale, C. F., Clapp, P. F.: Origin and Paths of Hurricanes and Tropical Storms Related to Certain Physical Parameters at the Air-Sea Interface. J. Appl. Met.2, 358–367 (1963).

    Google Scholar 

  13. 13.

    Tuleya, R. E., Yoshio Kurihara: A Note on the Sea Surface Temperature Sensitivity of Numerical Model of Tropical Storm Genesis. Mon. Weath. Rev.110, 2063–2069 (1982).

    Google Scholar 

  14. 14.

    Weather in the Indian Ocean, Vol. 1, 1943.

  15. 15.

    Wendland, W. M.: Tropical Storm Frequencies Related to Sea Surface Temperatures. J. Appl. Met.16, 477–481 (1977).

    Google Scholar 

  16. 16.

    FGGE MONEX-79, Environmental Data, NIO, Goa: 4003004 (India).

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Seetaramayya, P., Master, A. Observed air-sea interface conditions and a monsoon depression during MONEX-79. Arch. Met. Geoph. Biocl. A. 33, 61–67 (1984). https://doi.org/10.1007/BF02265431

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Keywords

  • Depression
  • Surface Pressure
  • Wind Field
  • Interface Condition
  • Interface Property