日本地球惑星科学連合2019年大会

講演情報

[J] ポスター発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS18] 地球流体力学:地球惑星現象への分野横断的アプローチ

2019年5月27日(月) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 8ホール)

コンビーナ:伊賀 啓太(東京大学大気海洋研究所)、吉田 茂生(九州大学大学院理学研究院地球惑星科学部門)、柳澤 孝寿(海洋研究開発機構 地球深部ダイナミクス研究分野)、相木 秀則(名古屋大学)

[MIS18-P03] Typhoon-induced vertical mixing measured by the Kuroshio Extension Observatory buoy

*相木 秀則1亀山 昂平2 (1.名古屋大学宇宙地球環境研究所、2.名古屋大学大学院環境学研究科)

We have analyzed the consistency of the vertical profiles of temperature and salinity and air-sea fluxes as observed by the Kuroshio Extension Observatory (KEO) buoy, with an intent to improve one-dimensional turbulence closure models used in OGCMs. The advantage of the KEO buoy data is the successful measurement of extreme weather events, such as typhoons and bomb cyclones with hourly time-resolution in the past 14 years. We have selected 7 typhoons in summer-autumn and 20 bomb cyclones in winter-spring, and compared with the results of the 1D-model experiments. In our buoy-model comparison system, the effect of mesoscale eddies and internal waves has been included by referring to the observed undulation of the seasonal thermocline. Both the timing and strength of the buoy precipitation data are well reproduced by the satellite precipitation data (GSMaP). Salinity profile in the 1D-model is yet to be improved by processes other than precipitation.