Re:Mars Lost Its Magnetic Field – and Then Its Oceans
by c22 on Sunday October 29, 2023 @06:42PM
(#38063581)
In 1860 atmospheric co2 was at 288 ppm [0]. By 1960 it was around 317 ppm [1]. A difference of 29 ppm which works out to about 226.78 gigatons of co2 [2].
In 2022 we emitted 37.5 gigatons of co2, up 0.9% from 2021 [3]. We are currently emitting an "industrial revolution" of co2 every ~6 years.
[0]: https://www.chicagotribune.com/news/ct-xpm-2000-05-23-000523...
[1]: https://www.statista.com/statistics/1091926/atmospheric-conc...
[2]: https://www.quora.com/How-many-grams-of-CO2-are-in-the-atmos...
[3] https://www.statista.com/statistics/276629/global-co2-emissi...
The Earth has had a 4,000-7,000 ppm CO2 concentration in the atmosphere before and it hasn't led to Venusification. We've only gone from ~250 to ~420 ppm so far, so we're a long way off, and hopefully we'll stop before we dump another 20+ "industrial revolution units" of CO2 into the atmosphere.
Of course long before then we melt Antarctica and the Earth's climate looks a lot different, but it won't be Venus.