Some Remarks on the Convective Transfer under the North-westerly Winter Monsoon situation

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  • 冬季北西季節風下における対流輸送

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The heat and moisture suppl i e d from the warm sea surface are principally transferred upward by the predominant convective activity. Basing on the aerological observations over the Japan Sea coastal region, the convective transfer is estimated by the residual computation on the thermodynamic and the moisture continuity equation applied to some selected situations of the prevailing northwesterly winter monsoon.<BR>The convective transfer is expressed in terms of conve c t ive updraft, excess temperature, convective Bowen's ratio and the area ratio of the updraft column. Therefore, the characteristic value of the area ratio may be inferred by evaluating the other parameters. Introducing the information obtained by a serial dropsonde observation, we can show a reasonable value of the area ratio.<BR>Predominant convective h eat transfer together with the release of latent heat results in a temperature field such that the air column in the cloud layer is heated up towards downstream.

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