Are H and O Being Lost From the Mars Atmosphere in the H2O Stoichiometric Ratio of 2:1?

Bruce Martin Jakosky1, Michael Chaffin1, Justin Deighan1, David Brain1 and Jasper S Halekas2, (1)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (2)University of California Berkeley, Berkeley, CA, United States