北半球における亜熱帯高圧帯の鉛直分布の季節変動について

概要

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This paper presents the seasonal variation of 39years (1960-98) mean vertical distributions of the subtropical high pressure belts in the Northern Hemisphere using the NCEP/NCAR reanalysis monthly dataset. The results are summarized as follows, (a) The subtropical high pressure belts in the Northern Hemisphere are different from the latitudinal longitudinal positions, the area of regions, and the altitudes at the four seasons. The high pressure belt lies in the northern Atlantic Ocean in summer, but the winter's high pressure belt lies in the northern Pacific Ocean. (b) In winter (January), the high pressure belt occur at the northwest Pacific ocean and at Middle America with the trough at the northern that regions on 500hPa. (c) In summer (July), the high pressure belt is produced over Eurasian continent on 300hPa in contrast to be produced from North America to North Africa, and on the northern Pacific Ocean under 400hPa. The high pressure belt over Eurasian continent affects the dry-hot abnormal summer, and the high pressure belt on the northern Pacific Ocean affects the wet-hot summer in Japan. (d) The high pressure belt on the northern Pacific Ocean under 400hPa is cause to the second summer at the western Japan in autumn.
愛知教育大学の論文
2002-03-01