Behavior of Water Vapor in the Surface Boundary Layer in Desert Areas 

作成者 Kobayashi, Tetsuo, Nagai, Hideyuki
日本十進分類法 (NDC) 451.3, 450
内容 研究概要:Observations of boundary-air-layer processes made in the daytime in desert areas show that the behavior of water vapor in the surface boundary layer is considerably different from that in moist areas; that is, (a) latent heat flux is negative (downward); (b) constant-flux layer of water vapor is not detected; (c) mixing ratio of water vapor increases with height on fine days; (d) counter-gradient flow of water vapor occurs. These phenomena are shown to be resulted from the following processes. (1) Hot, dry soil surfaces produce dry air or gradients of water vapor density by thermal diffusion. (2) The gradients of water vapor density made at the surface are transported upward by microconvection cells arising from the large difference in temperature between the surface and the air immediately above it.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
掲載誌情報 Proceedings of the international symposium on hydro-environment in Asia page.75-82 (1997)
言語 英語

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