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dc.contributor.authorVillanueva, G.L.
dc.contributor.authorLiuzzi, G.
dc.contributor.authorCrismani, M.M.J.
dc.contributor.authorAoki, S.
dc.contributor.authorVandaele, A.C.
dc.contributor.authorDaerden, F.
dc.contributor.authorSmith, M.D.
dc.contributor.authorMumma, M.J.
dc.contributor.authorKnutsen, E.W.
dc.contributor.authorNeary, L.
dc.contributor.authorViscardy, S.
dc.contributor.authorThomas, I.R.
dc.contributor.authorLopez-Valverde, M.A.
dc.contributor.authorRistic, B.
dc.contributor.authorPatel, M.R.
dc.contributor.authorHolmes, J.A.
dc.contributor.authorBellucci, G.
dc.contributor.authorLopez-Moreno, J.J.
dc.date2021
dc.date.accessioned2021-02-11T12:09:59Z
dc.date.available2021-02-11T12:09:59Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/7716
dc.descriptionIsotopic ratios and, in particular, the water D/H ratio are powerful tracers of the evolution and transport of water on Mars. From measurements performed with ExoMars/NOMAD, we observe marked and rapid variability of the D/H along altitude on Mars and across the whole planet. The observations (from April 2018 to April 2019) sample a broad range of events on Mars, including a global dust storm, the evolution of water released from the southern polar cap during southern summer, the equinox phases, and a short but intense regional dust storm. In three instances, we observe water at very high altitudes (>80 km), the prime region where water is photodissociated and starts its escape to space. Rayleigh distillation appears the be the driving force affecting the D/H in many cases, yet in some instances, the exchange of water reservoirs with distinctive D/H could be responsible.
dc.languageeng
dc.titleWater heavily fractionated as it ascends on Mars as revealed by ExoMars/NOMAD
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.source.titleScience Advances
dc.source.volume7
dc.source.issue7
dc.source.pageeabc8843
Orfeo.peerreviewedYes
dc.identifier.doi10.1126/sciadv.abc8843


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