학술논문
Mars 2020 Perseverance rover studies of the Martian atmosphere over Jezero from pressure measurements
Document Type
Working Paper
Author
Sánchez-Lavega, A.; del Rio-Gaztelurrutia, T.; Hueso, R.; Juárez, M. de la Torre; Martínez, G. M.; Harri, A. -M.; Genzer, M.; Hieta, M.; Polkko, J.; Rodríguez-Manfredi, J. A.; Lemmon, M. T.; Pla-García, J.; Toledo, D.; Vicente-Retortillo, A.; Viúdez-Moreiras, Daniel; Munguira, A.; Tamppari, L. K.; Newman, C.; Gómez-Elvira, J.; Guzewich, S.; Bertrand, T.; Apéstigue, V.; Arruego, I.; Wolff, M.; Banfield, D.; Jaakonaho, I.; Mäkinen, T.
Source
Journal of Geophysical Research: Planets, 128, e2022JE007480 (2023)
Subject
Language
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{\deg} - 241{\deg} (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{\deg}.