[A-CG36] 海洋と大気の波動・渦・循環の力学

[ACG36-P07] 金星大気における熱潮汐波からの自発的な重力波放射

*杉本 憲彦¹、藤澤 由貴子¹、樫村 博基²、野口 克行³、黒田 剛史⁴、高木 征弘⁵、林 祥介² (1.慶應義塾大学、2.神戸大学　、3.奈良女子大学、4.東北大学、5.京都産業大学)

キーワード：金星大気、熱潮汐波、重力波、自発的放射

In the present study, we use high-resolution Venus general circulation model (AFES-Venus) with less than 20 and 0.25 km in the horizontal and vertical grid intervals, respectively, to investigate spontaneous gravity wave radiation from nearly balanced flows in the Venus atmosphere. Small-scale gravity waves are radiated from thermal tides in the low-latitudes and baroclinic/barotropic waves in the mid- and high-latitudes in the super rotation of the cloud layer (~70 km). The small-scale gravity waves affect the three-dimensional structure of the super-rotation. The generation mechanism will be discussed in the poster (see figure also).

Sugimoto, N. et al., Generation of gravity waves from thermal tides in the Venus atmosphere, Nature Communications, Vol.12, (2021), 3682, doi:10.1038/s41467-021-24002-1. Featured on Editors’ Highlights webpage in Astronomy and planetary science.