Trompet, L.L.TrompetVandaele, A. C.A. C.VandaeleThomas, I.I.ThomasAoki, S.S.AokiDaerden, F.F.DaerdenErwin, J.J.ErwinFlimon, Z.Z.FlimonMahieux, A.A.MahieuxNeary, L.L.NearyRobert, S.S.RobertVillanueva, G.G.VillanuevaLiuzzi, G.G.LiuzziLópez-Valverde, M. A.M. A.López-ValverdeBrines, A.A.BrinesBELLUCCI, GiancarloGiancarloBELLUCCILopez-Moreno, J. J.J. J.Lopez-MorenoPatel, M. R.M. R.Patel2025-02-032025-02-0320232169-9097http://hdl.handle.net/20.500.12386/35772The Solar Occultation (SO) channel of the Nadir and Occultation for Mars Discovery (NOMAD) instrument scans the Martian atmosphere since 21 April 2018. In this work, we present a subset of the NOMAD SO data measured at the mesosphere. We focused on a spectral range that started to be recorded in Martian year (MY) 35. A total of 968 vertical profiles of carbon dioxide density and temperature covering MY 35 and the beginning of MY 36 were investigated until 135° of solar longitude. We compared 47 profiles with co-located profiles of the Mars Climate Sounder onboard the Mars Reconnaissance Orbiter. Most profiles show a good agreement as SO temperatures are only 1.8 K higher, but some biases lead to an average absolute difference of 7.4°K. The SO data set is also compared with simulations from the Global Environmental Multiscale-Mars general circulation model. Both data sets are in good agreement except for the presence of a cold layer in the winter hemisphere and a warm layer at dawn in the Northern hemisphere for solar longitudes between 240° and 360°. Five profiles contain temperatures lower than the limit for CO2 condensation. Strong warm layers were found in 13.5% of the profiles. They are present mainly at dawn and in the winter hemisphere, while the Northern dusks appear featureless. The data set mainly covers high latitudes around 60° and we derived some non-migrating tides. In the Southern winter hemisphere, we derived apparent zonal wavenumber-1 (WN-1) and WN-3 tidal components with a maximum amplitude of 10% and 5% at 63 km, respectively.STAMPAenArticle10.1029/2022JE0072792-s2.0-85151095595https://api.elsevier.com/content/abstract/scopus_id/85151095595https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JE007279FIS/05 - ASTRONOMIA E ASTROFISICA