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The influence of mountains on airflow


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We have considered the influence of the mountainous region in Central Japan on airflow by the use of meteorological elements, mean dynamical quantities and their spectrum. It has been shown that the foehn phenomenon appears on the lee side of the mountains, the friction velocity is larger on the lee side than on the windward side, and the geopotential height, temperature and eastward component wind spectrum in the upper layer on the lee side agree with those on the windward side over short periods. The mixing ratio spectrum on the 850 mb isobaric surface on the lee side is leers than that on the windward side. The variation of divergence on the lee side is larger than that on the windward side.



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