Seasonal evolution of near surface atmospheric temperatures at Jezero as measured by the MEDA instrument on Mars 2020
- 1Universidad del País Vasco, UPV/EHU, Escuela de Ingeniería de Bilbao, Física Aplicada, Bilbao, Spain (asier.munguira@ehu.eus)
- 2Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA, USA
- 3Lunar and Planetary Institute, Houston, TX, USA.
- 4NASA Godard Space Flight Center, Greenbelt, MD, USA
- 5Space Science Institute, College Station, TX, USA
- 6Centro de Astrobiología (INTA-CSIC), Madrid, Spain
- 7Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, NY, USA
We use data from the MEDA instrument on Mars 2020 to study the evolution of atmospheric and surface temperatures at Jezero. The measurements correspond to four height levels from the surface to ~40 m and together they allow us to examine multiple aspects of the near-surface meteorology at Jezero. We extend the analysis of near-surface temperatures of Munguira et al. (JGR:Planets 2023), which covered the period from Ls 13º to Ls 203º, over a full Martian year. We show the seasonal evolution of temperatures, including temperature fluctuations and thermal gradients, which are affected by the properties of the terrain traversed by Perseverance. We will focus on a physical description of the thermal processes that take place in the Convective Boundary Layer at Jezero. We compare near-surface temperatures with the atmospheric opacity around-the-clock retrieved by Smith et al. (2022) and with daily averages of optical depth measured by MastCam-Z (Bell et al. 2022). After Ls 203º, atmospheric waves coming across Jezero predicted by atmospheric models are expected to contribute to shaping temperatures producing thermal oscillations on time-scales of a few sols. This effect is accompanied by an enhanced variability of atmospheric opacity and both effects contribute to produce a higher variability on temperatures.
References:
[1] Munguira, A. et al. (2023). Near Surface Atmospheric Temperatures at Jezero from Mars 2020 MEDA Measurements. JGR: Planets.
[2] Smith, M.D. et al. (2022). Diurnal and Seasonal Variations of Aerosol Optical Depth Observed by MEDA/TIRS at Jezero Crater, Mars. In Seventh international workshop on the Mars atmosphere: Modelling and observations (pp. 14-17).
[3] Bell, J.F. et al. (2022). Geological, multispectral, and meteorological imaging results from the mars 2020 perseverance rover in jezero crater. Science Advances, 8 (47), eabo4856. doi: 10.1126/sciadv.abo4856
How to cite: Munguira, A., Hueso, R., Sánchez-Lavega, A., De la Torre-Juarez, M., Martínez, G., del Río-Gaztelurrutia, T., Smith, M., Lemmon, M., Rodríguez-Manfredi, J. A., Lepinette, A., Sebastián, E., and Banfield, D.: Seasonal evolution of near surface atmospheric temperatures at Jezero as measured by the MEDA instrument on Mars 2020, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-5885, https://doi.org/10.5194/egusphere-egu23-5885, 2023.
