「台風」の北緯25度における中心気圧と通過時の日本列島の降水量
スポンサーリンク
概要
- 論文の詳細を見る
The purpose of this paper is to examine the relationship between the central pressure when a tropical cyclone passed 25°N and precipitation in Japan. The term tropical cyclone in this paper refers to a disturbance that once exceeds a maximum wind speed of 17.2m/s or higher, including the period when the disturbance transforms into an extratropical cyclone. Tropical cyclone data from the "Tropical Cyclone Tracks in the Western North Pacific 1951-1990" and the daily precipitation data from the "AMeDAS observation yearly report," edited by the Japan Meteorological Agency, have been used. In this paper, 100tropical cyclones that have passed near Japan during 1981-1990 were selected. Then, the total precipitation amount recorded at every AMeDAS station for every tropical cyclone that existed between 25°N-45°N was defined as the precipitation during the passage of that cyclone. Here, the total number of AMeDAS observation stations was 661. The following results were obtained.1) When the central pressure at 25°N is 935 hPa or lower, the number of stations that records heavy precipitation on an average increases. On the other hand, when the central pressure is 1000 hPa or higher, the number of stations that records heavy precipitation on an average decreases. However, when the central pressure is between 940 hPa and 995 hPa, the number of stations that records heavy precipitation on an average exhibits no changes accompanied with the central pressure.2) The number of stations that records a precipitation of 151 mm or higher increases and number of stations that records no precipitation decreases when the central pressure decreases. However, the number of stations that records a precipitation of 1 mm or higher and 150 mm or lower does not record a change when the central pressure changes. Synoptic situation might largely affect the precipitation amount between 1 mm or higher and 150 mm or lower.3) The maximum precipitation amount exhibits a negative relationship with the central pressure at 25°N. These results indicate that the number of stations that records extremly heavy precipitation increases when the central pressure at 25°N is low.
- お茶の水地理学会の論文
- 2006-03-20
お茶の水地理学会 | 論文
- 植栽密度の違いが全天日射量と植栽表面温度の関係に与える影響
- 喜連川町の温泉分譲住宅地開発と地域社会 : 定住者の生活史からの考察(卒業論文要旨)
- 「離島」里のUターンとIターン資料(甑島調査報告)
- とってもシャイで実はひょうきん(近況・随筆)
- 1994年松山市における渇水について(卒業論文要旨)