/sci/ - Science & Math

Hypothetically, lets say Greta Thunberg got her hands on a magic lamp and asked the genie "please make all CO2 and green house emissions drop to zero, or pre-industrial levels"
Let's assume this just happened (**cough**, due to corona, oh god did I just cough?) How long would it take to have a noticeable effect on global weather patterns, global warming, ocean acidification, and other effects air pollution?

Cause we've been on covid lockdown for nearly 2 months, C02 emissions have dropped down to near zero, and it just snowed in may. Also, why is Greta's magic lamp making monkey's paw wishes? Is this one of those evil genie situations that twists the words of your wish to leave you unhappy??