Photochemical and climate consequences of sulfur outgassing on early Mars

摘要: Abstract Ancient Mars might have been warm and wet compared to today, but climate models trouble reproducing this warmth, partly because of the faintness young Sun inherent limitations CO2–H2O greenhouse warming. In particular, Rayleigh scattering incoming sunlight by a dense, CO2-rich atmosphere leads high planetary albedo, thereby reducing amount absorbed planet. It has recently suggested that presence 1–100 ppmv SO2 in Mars' early provided enough additional warming maintain warm, Mars. We show, however, should more than offset cooling from sulfate sulfur aerosols martian atmosphere. Hence, paradox remains unresolved.