Simulated temperature profiles with different abundance of methane on Uranus with the Irwin et al. (2022) haze scenario. Left: CH₄ vmr profile on Uranus (blue line and short dashed orange line) or with that abundance multiplied by a factor of two (dotted green line), four (dotted-dashed red line), ten (long dashed violet line). Right: the corresponding simulated temperature profiles. The solid blue line corresponds to the clear-sky model (see Sect. 3) with a nominal CH₄ vmr profile. The black symbols are the observed temperatures described in Fig. 1.