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KMID : 1024519960050060713
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Journal of the Environmental Sciences
1996 Volume.5 No. 6 p.713 ~ p.718
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On the Low Level Strong Wind Occurring at the Downwind Side of the Kumjeong Mountain
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Lim Sang-Jin
Seo Kwang-Soo
Jin Byong-Hwa
Kim Hae-Dong
Hwang Soo-Jin
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Abstract
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We identified two characteristic turbulent flow cases, weakening and strengthening, which appear at the downwind side. Observations were made two times, Dec. 2-3. 1995 and Feb. 13-14. 1996 at Pusan National University site located downwind side of Kumjeong mountain. Meteorological observation system, tethersonde, was adopted to present observation. In the case of the west wind which blows perpendicular to Sanghak mountain located westward from the site, the wind speed highly increased in exponential with height. Therefore, the low level wind speed was so weak just like Taylor(1988)’s review. While the wind speed was intensified at 200-400m layer when the northwest wind blows from the continental Siberian high. We suppose 기 is because of the strong vertical convergence of flow between the surface inversion layer and the upper one, and also the horizontal convergence along the saddle and valley between the two mountains, Kumjeong and Sanghak-because of Bernoulli’s effect. The inversion layer existed at surface-l00m and 500-600m level and the strong wind existed at about 200-400m layer. Key Words : Downwind, low level strong wand, Turbulent flow
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KEYWORD
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Dowmwind, low level strong wind, Turbulent flow
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