Isotopic 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.
View Article and Find Full Text PDFThe surname of author Cathy Quantin-Nataf was misspelled 'Quantin-Nata' , authors Ehouarn Millour and Roland Young were missing from the ACS Science Team list, and minor changes have been made to the author and affiliation lists; see accompanying Amendment. These errors have been corrected online.
View Article and Find Full Text PDFGlobal dust storms on Mars are rare but can affect the Martian atmosphere for several months. They can cause changes in atmospheric dynamics and inflation of the atmosphere, primarily owing to solar heating of the dust. In turn, changes in atmospheric dynamics can affect the distribution of atmospheric water vapour, with potential implications for the atmospheric photochemistry and climate on Mars.
View Article and Find Full Text PDFBackground: The number of elderly patients with breast cancer is increasing, and a large proportion of these older patients do not receive conventional treatment. Clinical and biological characteristics of tumours at this age and survival according to local or systemic therapy were analysed.
Material And Method: A total of 96 consecutive early breast cancer patients over 80 years of age diagnosed in our Unit between January 2002 and September 2008 were retrospectively investigated.