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Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover
Sébastien Viscardy, David C. Catling, Kevin Zahnle, 2025. Journal of Geophysical Research: Planets 130(4), e2024JE008441.
Re-analyses published TLS data. The foreoptics chamber held methane three to four orders of magnitude above the sample cell, with unexplained pressure changes; leaks of under 0.1 per cent of foreoptics methane could explain the atmospheric values and would be invisible in housekeeping data. Averaging the three R3-triplet lines as if independent likely underestimates uncertainties. Proposes a two-step test.
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Viscardy, S., Catling, D. C., & Zahnle, K. (2025). Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover. Journal of Geophysical Research: Planets 130(4), e2024JE008441. https://doi.org/10.1029/2024je008441
@article{viscardy2025questioning,
author = {Viscardy, Sébastien and Catling, David C. and Zahnle, Kevin},
title = {Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover},
journal = {Journal of Geophysical Research: Planets 130(4), e2024JE008441},
year = {2025},
doi = {10.1029/2024je008441},
url = {https://doi.org/10.1029/2024je008441}
}TY - JOUR TI - Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover AU - Viscardy, Sébastien AU - Catling, David C. AU - Zahnle, Kevin PY - 2025 JO - Journal of Geophysical Research: Planets 130(4), e2024JE008441 DO - 10.1029/2024je008441 UR - https://doi.org/10.1029/2024je008441 ER -
Viscardy, Sébastien et al.. “Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover.” Journal of Geophysical Research: Planets 130(4), e2024JE008441 (2025). https://doi.org/10.1029/2024je008441.