Relationship Between the Areal Distribution of Photochemical Pollutants and Local Wind Flow CoveringKanto District.

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  • 関東地方における光化学汚染質の地域分布と局地気流

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Relationship between the areal distribution of photochemical pollutants and local wind flow pattern covering Kanto-Districts are analyzed. Results are summerized as follows. Major local winds in Kanto-Districts are sea and land breeze from Tokyo Bay, Sagami Bay and Kashima Sea, and mountain-vally wind from western and northern mountain area. These local wind create a very complicated wind formation in Kanto Plain. Usually, higher concentrations are observed near the shore in the morning. As the sea breeze penetrate inland, this high concentrations are moves to inner part of this plain. In the center of Tokyo Metropolitan Area, Ox concentration is low level because of scavenging by primary pllutants from mobil sources. During the night time polluted air mass is pushed back to the seaward by vally wind. These result shows us the importance of Long-Time Transport phenomenon in Kanto-Area.

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