Thermal Inertia At The Msl And Insight Mission Sites On Mars D. Singh , Centre Of Studies In Resources Engineering, Indian Institute Of Technology Bombay, Mumbai, India (Sdeepak@Umich.Edu), S. Uttam, Physical Research Laboratory, Ahmedabad, India. Abstract: For Planetary Surface Materials, Thermal Inertia Is The Critical Property That Governs The Surface’S Daily Thermal Response And Controls The Diurnal And Seasonal Surface Temperature Variations. Here We Use The Ground Measurements Made By The Msl Curiosity Rover And The Insight Lander To Determine The Thermal Inertia Of Two Sites On Mars. This Study Compares The Variation Of Thermal Inertia During And After The Large Dust Storm (Lds) Of Martian Year (My) 34. We Derive A Simple Approximation (Using Energy Balance), Which Utilizes Surface Albedo, Surface Energy Flux, And Diurnal Change In The Surface Temperature For The Surface Thermal Inertia Determination. The Average Thermal Inertia In My34 Is About 39.2%, 3.7%, And 3.4% Higher Than My35 Average Thermal Inertia For The Msl, Insight (Fov1), And Insight