Thermal Modeling of Oxia Planum: Thermophysical Characterization of the Dark Resistant Unit (DRU) in the Germania Lacus

Figure 1

Effect of the optical depth on the solar irradiance for several values of zenith angle, according to [25]. The surface considered is horizontal, and the solar longitude is 90°. A value of indicates a dust storm, even if at solar longitude 90°, is not expected.