Seasonal And Global Ozone Variations With Heterogeneous
Chemistry In The Martian Atmosphere.
M. A. J. Brown, School Of Physical Sciences, The Open University, Milton Keynes, U.K. (Megan.Brown@Open.Ac.Uk),
M. R. Patel, S. R. Lewis, J. A. Holmes, J. Mason, A. Bennaceur, The Open University, Milton Keynes, U.K., A. C.
Vandaele, Royal Belgian Institute For Space Aeronomy (Bira-Iasb), Brussels, Belgium.

Introduction
This Study Investigates The Temporal And Spatial Effects
Of Heterogeneous Chemistry On Ozone And Hydroxyl Radicals (Oh And Ho2 , Collectively Known As Hox ) Using
Observed Total Column Abundances (Tcas) Of Ozone, Water Ice, And Water Vapour, Combined With Mars Global
Climate Model (Mgcm) Simulations With And Without
Heterogeneous Chemistry. We Analyse The Seasonal And
Latitudinal Distribution Of Ozone And Hox To Assess Where
Heterogeneous Chemistry Influences Trace Gases, And The
Extent Of This Chemical Impact. Analysing How The Inclusion Of Heterogeneous Chemistry Affects Ozone And Hox
Will Help Us Understand The Variation Of Hox Species,
Their Sensitivity To Water Ice, And Potentially Improve
Simulations Of Ozone To Be In Better Agreement With Observations. Preliminary Results Show That The Addition
Of Heterogeneous Chemistry Increase The Ozone Tca, Although It Does Not Account For All Ozone Deficit When
Compared To Nadir Observations.