Abstract: Wave breaking can significantly influence the atmosphere-ocean system. When wave breaks, air is entrained, sea spray is generated, and large amount of wave energy dissipates. It plays an important role in the transfer of mass, momentum and energy. Understanding the physics of an individual breaking wave is important to the global atmosphere-ocean model. In this talk, I will briefly review experimental and numerical researches on the air entrainment, bubble statistics and energy dissipation of breaking waves. My study aims to investigate the breaking process of broadband wave groups using Basilisk (http://basilisk.fr/), which is an open-source software for the solution of partial differential equations on adaptive Cartesian meshes. I will also share some of my simulations performed with Basilisk.