Inceasing
oxygen (for example form 20.9 to 30 percent) in my opinion would:
Increasing scattering and so albedo, lowering temperature
Increasing total pressure, broadening of
absorption lines, rising temperature
Increasing adiabate slope, rising SAT directly but decreasing water vapor, total effect??
Thawing permafrost also delivers organic - rich soils to lake bottoms, where decomposition in the absence of
oxygen releases additional methane.116 Extensive wildfires also release carbon that contributes to climate warming.107, 117,118 The capacity of the Yukon River Basin in Alaska and adjacent Canada to store carbon has been substantially weakened since the 1960s by the combination of warming and thawing of permafrost and by
increased wildfire.119 Expansion of tall shrubs and trees into tundra makes the surface darker and rougher,
increasing absorption of the sun's energy and further contributing to warming.120 This warming is likely stronger than the potential cooling effects of
increased carbon dioxide uptake associated with tree and shrub expansion.121 The shorter snow - covered seasons in Alaska further
increase energy
absorption by the land surface, an effect only slightly offset by the reduced energy
absorption of highly reflective post-fire snow - covered landscapes.121 This spectrum of changes in Alaskan and other high - latitude terrestrial ecosystems jeopardizes efforts by society to use ecosystem carbon management to offset fossil fuel emissions.94, 95,96