Cloud structure and emission spectrum of a self-luminous planet with physical properties similar to HR 8799 e. The left panel shows the cloud, gas, and nuclei mixing ratios, with every components the same meaning as Figure 8. The brown thick and thin lines present the temperature profiles we used in the clear and cloudy models, respectively. The right panel shows the synthetic emission spectrum of a cloudy atmosphere (the black line) and a clear atmosphere (the blue line), whose effective temperatures are both 1000 K. For reference, the spectrum of a 1000 K black body radiation is also plotted as the dashed line.