Preliminary Results Of Atmospheric Parameters Varying
With Lt Around Volcanoes From Pfs-Mex Observations
P. Wolkenberg, Istituto Nazionale Di Astrofisica (Inaf), Istituto Di Astrofisica E Planetologia Spaziali (Iaps),
Rome, Italy (Paulina.Wolkenberg@Inaf.It), M. Giuranna, D. Grassi, Istituto Nazionale Di Astrofisica (Inaf),
Istituto Di Astrofisica E Planetologia Spaziali (Iaps), Rome, Italy, A. Spiga, Laboratoire De Météorologie
Dynamique, Ipsl, Sorbonne Université, Paris, France, A. Cardesin-Moinelo, D. Merritt, J. Marin-Yaseli De
La Parra, European Space Astronomy Center, Madrid, Spain,

Introduction:
We Present A New Type Of Observations (Scan
Mode) To Study Atmospheric Parameters Varying With
Lt Over Volcanoes In The Tharsis Region. Scan Orbits
Are Measured By The Planetary Fourier Spectrometer
(Pfs) Across The Track Of Mars Express Spacecraft.
We Focus On Observations From The Southern Summer
Season In My 35. In Order To Improve Fits Between
Modeled And Observed Spectra, A Correction On Surface Pressures Was Introduced. We Found A Hot Air
Close To The Top Of Olympus While The Cold Air Is Observed At 40 – 50 Km Of Altitude. As A Result, Potential Temperatures Are Almost Constant From 15 To 30
Km Of Altitude. Thus, The Very Deep Vertical Mixing
Layer Occurs There. Atmospheric Thermal Fields Can Be