What are the characteristics of exoplanets with high CO2 atmospheres?

Feb 11, 2009 ... ... percent of those generated by today's ... Another indication that human emissions dwarf those of volcanoes is the fact that atmospheric CO2 ... Jan 25, 2018 ... In fact, carbon dioxide, which is blamed for climate warming, has only a volume share of 0.04 percent in the atmosphere. And of these 0.04 ... ... atmosphere by about 10 percent since the beginning of the century. Roger ... atmosphere from the infrared radiance of atmospheric carbon dioxide. Jun 26, 2023 ... The atmosphere is roughly 0.04% CO2, but humans have contributed about 33% of that, not 3%, since 1850. That's less than one percent of sea level pressure here. ... The deep cold southern polar winter removes CO2 gas from the atmosphere by freezing it directly onto ... While sulfur dioxide released in contemporary volcanic eruptions has occasionally caused detectable global cooling of the lower atmosphere, the carbon dioxide ... Jan 2, 2023 ... Some researchers believe that approximately 0.045% by volume is the maximum more or less acceptable concentration of CO2 in the atmosphere. Oct 1, 2019 ... One common argument is that those countries that have added most to the CO2 in our atmosphere – contributing most to the problem today ... May 31, 2023 ... "While these greenhouse gases make up just a tiny percentage of our atmosphere, they play major roles in trapping Earth's radiant heat and ... Jan 21, 2021 ... We found that the world's forests emitted an average of 8.1 billion metric tonnes of carbon dioxide into the atmosphere each year due to deforestation and ...