Understanding the composition of the atmosphere over geological time is critical to understanding the history of the Earth system, as the atmosphere is closely linked to the lithosphere, hydrosphere and biosphere. Although much of the history of the lithosphere and hydrosphere is contained in rock and...
Throughout Earth's history, CO2 is thought to have exerted a fundamental control on environmental change. Here we review and revise CO2 reconstructions from boron isotopes in carbonates and carbon isotopes in organic matter over the Cenozoic-the past 66 million years. We find close coupling ...
While Earth was ice-bound, the white planet reflected more of the sun’s energy back into space, making it hard to reverse the cold climate, even with high CO2levels. But the near-global ice cover also shut down the weathering thermostat, which allowed volcanic CO2to build to perhaps100 ...
The calculated median S(z) levels over the last 800 ky show variations from 356 to 815 ppm, with uncertainties on average of +96/−75 ppm (Fig. 2a). Fig. 2 The magnetic susceptibility (MS)–S(z) correlation of the Chinese Loess Plateau. a Back-calculated S(z) values ...
The Piacenzian stage of the Pliocene (2.6 to 3.6 Ma) is the most recent past interval of sustained global warmth with mean global temperatures markedly higher (by ~2–3 °C) than today. Quantifying CO2 levels during the mid-Piacenzian Warm Period (
2019 levels, driven by growth in coal use for electricity generation. Coal-fired generation reached an all-time high in India, jumping 13 percent above its 2020 level. This was partly because the growth of renewables slowed to one-third of the average rate seen over the previous five ...
(1992): Evolution of terrestrial proto - CO2 - atmosphere coupled with thermal history of the Earth. Earth Planet. Sci. Lett., 113, 251-266... E Tajika,T Matsui - 《Earth & Planetary Science Letters》 被引量: 57发表: 1992年 Io: Thermal models and chemical evolution A combined thermal...
“Over recent years, concern about a coming hothouse mass extinction set off by human carbon emissions has been on the rise. Studies of Earth’s deep history reveal that at least 4 out of the 5 major mass extinctions occurred during both hothouse periods and during times when atmospheric and...
True or False. Atmospheric CO2 levels have increased dramatically since the Industrial Revolution.Industrial Revolution:The industrial revolution was a remarkable point in the history of mankind which began in the latter half of the 18th century. It marked the transformation in t...
That was the reaction of meteorologist Eric Holthaus to news that atmospheric carbon dioxide levels have reached heights not seen in the entirety of human existence – not history, existence. This is the first time in human history our planet's atmosphere has had more than 415ppm CO2.Not jus...