InSight Pressure Data Recalibration, and Its Application to the Study of Long-Term Pressure Changes on Mars.

ABSTRACT: Observations of the South Polar Residual Cap suggest a possible erosion of the cap, leading to an increase of the global mass of the atmosphere. We test this assumption by making the first comparison between Viking 1 and InSight surface pressure data, which were recorded 40 years apart. Such a comparison also allows us to determine changes in the dynamics of the seasonal ice caps between these two periods. To do so, we first had to recalibrate the InSight pressure data because of their unexpected sensitivity to the sensor temperature. Then, we had to design a procedure to compare distant pressure measurements. We propose two surface pressure interpolation methods at the local and global scale to do the comparison. The comparison of Viking and InSight seasonal surface pressure variations do

SUBMITTER: Lange L 

PROVIDER: S-EPMC9286347 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature