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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

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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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Authors and Affiliations

  1. Indian Institute of Tropical Meteorology, Ramdurg House, Shivajinagar, 411055, Pune, India

    P. Seetaramayya & A. Master

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  1. P. Seetaramayya
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  2. A. Master
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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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  • DOI: https://doi.org/10.1007/BF02265431

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