Variability Aspects of the Mars Surface Data from Summer to Winter Solstice: Viking Lander 1 Observations Revisited

In this work, we revisited the meteorological datasets of temperature and pressure, recorded onboard the Viking Lander 1, evolving from summer to winter Martian solstice. The datasets were provided by the Viking Meteorology Experiment Team and we performed the study using a multiscale signal analysis technique based on an available wavelet transform methodology. Even in the presence of data gaps, the methodology provides the skill to perform the time-scale signal characterization. We highlighted the results with new features related to the non-stationary behavior in the data. The main spectral periods found in pressure data are 0.25 SOL (6.25 h), 0.33 SOL (8.3 h), 0.5 SOL (12.5 h), 1 SOL (25 h), 10.2 SOLS, a broad peak between 21 and 33 SOLS. In temperature, the main periods were 0.5 SOL (12.5 h), 1 SOL (25 h), and 32 and 64 SOLS. The correlation between the pressure and temperature data shows anti-correlation in the scales larger than 1.5 SOL, with a high determination coefficient (more than 64 % ).