地球温暖化に伴う冬型気圧配置と伊勢湾岸地域の局地風の変容について(<特集>地球温暖化と異常気象)

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This study attempts to clarify the influence of global warming on local meteorology. The Ise-Bay region is known for its strong local winds. These local winds are called Ibuki-Oroshi and Suzuka-Oroshi, and blow in the pressure patterns of west-high and east-low. In recent years, the number of days Ibuki-Oroshi blows has decreased while Suzuka-Oroshi has increased. This is because of the changes in the moving lines of Nangan-Cyclones and Nihonkai-Cyclones, which are caused by global warming. As a result, there is a higher probability that the center of cyclones goes through the Sea of Okhotsk, making Suzuka-Oroshi blow eastward. Additionally, the rising of SST in the tropical sea area caused by global warming has intensified the Hadley circulation. It has expanded the subtropical high pressure belts formed in the southern parts of Japanese islands and shifted them up northward. As a result, the situation has become that Nangan-Cyclones are likely to approach and couple with Nihonkai-Cyclones. Especially, the area Nihonkai-Cyclones and Nangan-Cyclones couple is near the east of Hokkaido and the coupling cyclones form pressure patterns that blow strong west winds in the western Japan. Developed by the vertical convergence and atmospheric disturbance made of the cyclonic and anticyclonic vortices in the upper to middle troposphere, coupling cyclones around Hokkaido have a structure that could abnormally develop to the level of typhoon. Central Japan International Airport is located in the west of Chita Peninsula facing the Ise-Bay and is thus susceptible to the influence of eastward Suzuka-Oroshi. Therefore, strong west winds occasionally affect the arrival and departure of aircraft at this airport.
2009-04-01

地球温暖化に伴う冬型気圧配置と伊勢湾岸地域の局地風の変容について(<特集>地球温暖化と異常気象)

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