22-12-2015 23:48 | |
Tai Hai Chen★★★★☆ (1085) |
jdm wrote: At the peak of the Pliocene some 4 million years ago, CO2 reached 415 ppm because of very high temperature. Next year CO2 level 404 ppm. https://scripps.ucsd.edu/programs/keelingcurve/2013/12/03/what-does-400-ppm-look-like/ |
Threads | Replies | Last post |
The SCIENCE of the "Greenhouse Effect" | 314 | 19-01-2025 05:49 |
Nitrate Reduction - Powerful Greenhouse Gas Emission AND Alkalinity | 108 | 09-12-2024 19:46 |
Greenhouse gasses | 83 | 18-07-2024 21:32 |
The "radiative Greenhouse effect" does not exist | 145 | 24-04-2024 02:48 |
'Greenhouse' Effect? | 49 | 30-11-2023 06:45 |