Study for the dissipation process of oceanic surface waves and mesoscale eddies based on a complementary approach

2017 Fiscal Year Final Research Report

• Project/Area Number: 26400474
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Nagoya University (2015-2017); Japan Agency for Marine-Earth Science and Technology (2014)
• Principal Investigator: Hidenori Aiki 名古屋大学, 宇宙地球環境研究所, 准教授 (60358752)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 群速度ベクトル / 熱帯ー亜熱帯相互作用 / 波動エネルギー循環 / 気候変動

Outline of Final Research Achievements

In previous theories for the atmosphere and ocean, frameworks for the dynamics of midlatitude and equatorial regions have been separated. Thus it has been impossible to continuously trace the life-cycle of wave energy from tropical to extratropical regions. This study has developed a scheme for calculating group velocity that is seamlessly diagnosable for waves at all latitudes and automatically applicable to various types of waves (Rossby, inertia-gravity, and Kelvin waves). The new scheme enables to trace the generation, circulation, and dissipation of wave energy with referring to the direction of group velocity.

Free Research Field

大気海洋力学