Spatial distribution of regolith temperature T_s at the central location of the study area at different LLTs. Panels (a)–(c) do not consider the effect of SSRTEE, and correspond to LLTs 17.93, 19.567, and 5.89, respectively. Panels (d)–(f) consider SSRTEE, and correspond to the same time points as panels (a)–(c). Panels (g)–(i) presents the temperature differences corresponding to the time pairs (a)–(d), (b)–(e), and (c)–(f), respectively.