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SUMMARY:Interactive Coupling of Hydrogen and Methane - Dr Megan Brown\, Un
 iversity of Cambridge
DTSTART:20251202T110000Z
DTEND:20251202T120000Z
UID:TALK238075@talks.cam.ac.uk
CONTACT:Yao Ge
DESCRIPTION:Hydrogen could be used as an alternate to fossil fuels if gen
 erated sustainably. However\, leakage of hydrogen into the atmosphere coul
 d have further repercussions on climate change. Atmospheric hydrogen has a
 n indirect greenhouse effect due to its impacts on methane\, troposperic o
 zone and stratospheric water vapour. Understanding the lifetime of hydroge
 n and its effect on methane is vital to quantify its impact on climate. Th
 e main destructive pathways of hydrogen are via OH reaction (30%) and soil
  update (70%). The OH used in hydrogen destruction  is known to cause a d
 ecrease in methane destruction (which is also primarily destroyed by OH)\,
  while destruction of H2 by soil uptake is poorly constrained and difficul
 t to model. We implement a hydrogen soil deposition scheme into a model wi
 th pre-existing interactive methane to create a fully interactive hydroge
 n-methane atmospheric chemistry model. We examine the impacts of having bo
 th interactive hydrogen and methane and show how it compares to observatio
 ns.
LOCATION:Chemistry Dept\, Unilever Lecture Theatre and Teams
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