Global well-posedness for 2D Euler-Boussinesq equations with temperature-dependent thermal diffusivity

In the present paper, we consider the two-dimensional Euler-Boussinesq equations with temperature-dependent thermal diffusivity. More precisely, we prove the global-in-time existence and uniqueness for this system under Yudovich-type initial data. In addition, the global propagation of striated regularity is also considered.