[A-AS07] 成層圏・対流圏過程とその気候への影響

[AAS07-P05] Seasonal variation of Thorpe scale and energy dissipation rate derived from radiosonde observations at Syowa Station in the Antarctic

*高麗 正史¹、佐藤 薫¹、冨川 喜弘²、西村 耕司²、佐藤 亨³ (1.東京大学大学院理学系研究科地球惑星科学専攻大気海洋科学講座、2.国立極地研究所、3.京都大学情報学研究科)

The energy dissipation rate is a fundamental parameter describing atmospheric turbulence. Clayson and Kantha (2008) and following studies showed that radiosondes with a vertical resolution of several meters can detect at least partially overturning structures. Energy dissipation rates were estimated utilizing these radiosonde data based on Thorpe’s method (1977) which is commonly used for oceanic turbulence parameters. In the present study, we will showd estimations of energy dissipation rates from radiosonde, and compare it with the estimation from a radar at Syowa Station.