Green plants convert carbon dioxide from the air into life on earth. So man's carbon dioxide has increased life on earth. But not increased free carbon dioxide in the air.
There is no possible effect on the weather. Man-made global warming and climate change are phantom science from nuclear power.
Who are desperately trying to invent a reason that this uneconomic, toxic, fatal and polluting technology should be allowed to continue on earth.
All the professors in higher education, who have written papers about increasing global carbon dioxide levels, have no place in education. They are paid stooges.