[MIS11-P18] Possibility of hydrogen peroxide as a warming agent on early Mars with oxidized condition
Keywords:Mars, Liquid water, Atmosphere
To test this idea, we use a 1-D atmospheric energy balance model with a line-by-line radiative transfer calculation. Then, by parameterizing the abundance of H2O2 in a CO2-dominant atmosphere, we estimate how much the surface temperature is warmed. We found that the temperature increased at most only 3 K, in the case of the atmosphere with the saturated abundance of H2O2. On the other hand, when the abundance of condensation nuclei in the upper atmosphere is low, H2O2 is expected to be possibly super-saturated. In the case of the atmosphere with pressure of > 2bar and 1 ppm H2O2, the surface temperature can exceed 273 K. Also, in the case for 10 ppm H2O2, at least 1 bar atmosphere is required to warm the surface temperature above 273 K. In particular, for the 2 bar atmospheres including H2O2 with a molar fraction of 1 ppm and 10 ppm, the surface temperatures increase about 40 K and 80 K from 230 K, respectively. In this presentation, we will discuss about the possibility that H2O2 concentrates to be super-saturated from the view of photochemical production and condensation processes.