RE: Human Survival
July 31, 2013 at 12:02 pm
(This post was last modified: July 31, 2013 at 12:22 pm by Anomalocaris.)
The plant dooms day clock of minus 2 hundred million years is probably set against expected time when CO2 drops below the level needed to support C3 photosynthesis used by majority of photosynthetic organisms. But there is an alternative form of photosynthesis evolved in some complex plants which can continue to function at much lower levels of CO2 concentration. So the end of complex echosystem supported oxygen respirationin multicellular life may occur much later than that.
The global average temperature during wet greenhouse:
Schröder, K.-P.; Connon Smith, Robert (May 1, 2008), "Distant future of the Sun and Earth revisited", Monthly Notices of the Royal Astronomical Society 386
The large surface water bodies supported by outgassing:
Bounama, Christine; Franck, Siegfried; von Bloh, Werner (2001), "The fate of Earth’s ocean", Hydrology and Earth System Sciences, Potsdam Institute for Climate Impact Research
Survival of complex organisms on earth beyond 2.8 billion years in the future:
O'Malley-James, J. T.; Greaves, J. S.; Raven, J. A.; Cockell, C. S., Swansong Biospheres: Refuges for life and novel microbial biospheres on terrestrial planets near the end of their habitable lifetimes
The global average temperature during wet greenhouse:
Schröder, K.-P.; Connon Smith, Robert (May 1, 2008), "Distant future of the Sun and Earth revisited", Monthly Notices of the Royal Astronomical Society 386
The large surface water bodies supported by outgassing:
Bounama, Christine; Franck, Siegfried; von Bloh, Werner (2001), "The fate of Earth’s ocean", Hydrology and Earth System Sciences, Potsdam Institute for Climate Impact Research
Survival of complex organisms on earth beyond 2.8 billion years in the future:
O'Malley-James, J. T.; Greaves, J. S.; Raven, J. A.; Cockell, C. S., Swansong Biospheres: Refuges for life and novel microbial biospheres on terrestrial planets near the end of their habitable lifetimes
