carbonate-silicate cycle
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Habitable Zones, Status Report, Water/Hycean Worlds & Oceanography

Seafloor Weathering and Stochastic Outgassing Unlikely to Significantly Shorten the Future Lifespan of Earth’s Terrestrial Biosphere

by Keith Cowing

Current understanding suggests that as the Sun brightens in the far future, Earth’s carbonate-silicate cycle will offset increasing temperatures by drawing CO2 out of the atmosphere, ultimately leading to the […]

Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Origin & Evolution of Life, Status Report

The Effect of a Biosphere on the Habitable Timespan of Stagnant-lid Planets and Implications for the Atmospheric Spectrum

by Keith Cowing

Temperature-dependent biological productivity controls silicate weathering and thereby extends the potential habitable timespan of Earth.

Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Status Report, Water/Hycean Worlds & Oceanography

Substantial Extension of the Lifetime of the Terrestrial Biosphere

by Keith Cowing

Approximately one billion years (Gyr) in the future, as the Sun brightens, Earth’s carbonate-silicate cycle is expected to drive CO2 below the minimum level required by vascular land plants, eliminating […]

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