Here's a serious question: If we were to stop emitting all greenhouse gases right now, would the Earth's temperature start to cool down, or would the existing greenhouse gases continue to warm the planet?
I can only say that the Rate of Warming will come down or infact slow down and YES YES YES, even if all greenhouse gas emissions were to stop now, the Earth's temperature would continue to rise for a few decades due to:
1. Thermal inertia: The oceans and atmosphere take time to respond to changes in greenhouse gas concentrations.
2. Carbon dioxide persistence: CO2 remains in the atmosphere for centuries, continuing to trap heat.
3. Methane and other gases: Other greenhouse gases like methane and nitrous oxide have longer lifetimes, contributing to ongoing warming.
4. Feedback loops: Melting Arctic ice, thawing permafrost, and changes in ocean circulation will continue to amplify warming.
If all greenhouse gas emissions were stopped immediately, the Earth's temperature would not start cooling right away due to "committed warming" from existing greenhouse gases. Instead, temperatures would stabilize at a higher level for several decades before gradually declining over centuries as natural processes removed some carbon dioxide from the atmosphere. However, significant climate impacts, such as sea level rise, would continue for a long time due to past emissions.
Srinivas Kasulla Thank you for the thorough response! I appreciate the insights on thermal inertia, CO2 persistence, and feedback loops. I agree with you that even with an immediate halt to emissions, the Earth's temperature will continue to rise for some time due to these factors. It really highlights the long-term impact of greenhouse gases on our climate.
Abdelhak Maghchiche Thank you for explaining "committed warming." It's eye-opening to see that temperatures will stay high for decades even if emissions stop now. The lasting impacts, like sea level rise, really underscore the urgency of addressing climate change. I appreciate your insights!