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SUMMARY:Hydrogen and the ancient Martian climate puzzle - Nick Tosca NASA
DTSTART:20251013T160000Z
DTEND:20251013T170000Z
UID:TALK238021@talks.cam.ac.uk
CONTACT:Sophie Collingham
DESCRIPTION:Unraveling the details of the ancient Martian climate is one o
 f the major unanswered questions in planetary science. Geological data ind
 icate an episodically warm surface during the early history of Mars (~3-4 
 billion years ago)\, but identifying mechanisms that could have warmed the
  early Martian surface in the face of a faint young sun has remained a cha
 llenge. \n\nIn this talk I will review new advances in constraining mechan
 isms that could have supplied significant quantities of H2 to the early Ma
 rtian atmosphere\, and why it may have served as one of the most important
  greenhouse gases cycled through the early Martian crust-atmosphere system
 . Together\, this new wave of orbital and in-situ observations is permitti
 ng a new generation of hypotheses that reconcile short- and long-term clim
 ate states with geological constraints.
LOCATION:Small Lecture Theatre\, Department of Geography\, Cambridge
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