Mars 2020 Perseverance rover studies of the Martian atmosphere over Jezero from pressure measurements

Abstract

The pressure sensors on Mars rover Perseverance measure the pressure field in the Jezero crater on regular hourly basis starting in sol 15 after landing. The present study extends up to sol 460 encompassing the range of solar longitudes from Ls 13° - 241° (Martian Year (MY) 36). The data show the changing daily pressure cycle, the sol-to-sol seasonal evolution of the mean pressure field driven by the CO2 sublimation and deposition cycle at the poles, the characterization of up to six components of the atmospheric tides and their relationship to dust content in the atmosphere. They also show the presence of wave disturbances with periods 2-5 sols, exploring their baroclinic nature, short period oscillations (mainly at night-time) in the range 8-24 minutes that we interpret as internal gravity waves, transient pressure drops with duration 1-150 s produced by vortices, and rapid turbulent fluctuations. We also analyze the effects on pressure measurements produced by a regional dust storm over Jezero at Ls 155°.

References in corpus (3)

• The onset and growth of the 2018 Martian Global Dust Storm
• A study of daytime convective vortices and turbulence in the martian Planetary Boundary Layer based on half-a-year of InSight atmospheric measurements and Large-Eddy Simulations
• Mars 2020 Perseverance rover studies of the Martian atmosphere over Jezero from pressure measurements

Cited by in corpus (6)

• Mars 2020 Perseverance rover studies of the Martian atmosphere over Jezero from pressure measurements
• High-Order harmonics of Thermal Tides observed in the atmosphere of Mars by the Pressure Sensor on the Insight lander
• Dynamical phenomena in the Martian atmosphere through Mars Express imaging
• Martian atmospheric disturbances from orbital images and surface pressure at Jezero Crater, Mars, during Martian Year 36
• Diurnal and Seasonal variations of Gravity Waves in the lower atmosphere of Mars as observed by Insight
• Diurnal temperature variations and migrating thermal tides in the Martian lower atmosphere observed by the Emirates Mars InfraRed Spectrometer