>So 0.0012% of CO2 in atmosphere caused by humans. Nature is responsible for the remaining 0.0388% in atmosphere.
Unless you're discussing literal "human expelled co2", as in "the measure of peoples exhalations during breathing", then you're out by several orders of magnitude. The pre-industrial co2 concentration in the atmosphere trends between 180ppm - 300ppm. In the last hundred years, the concentration has increased to 420ppm.
For reference, each 1ppm in the atmosphere is around 7.8 gigatonnes of CO2. Humans currently create around 40gigatonnes of CO2 per year, roughly equating to 5ppm added per year. We add equivalent to 0.8% of the atmospheric CO2 per year.
That's a bit dishonest as the CO2 level has risen by almost 50% from pre industrial times so you would need a very narrow definition of human activity.
It doesn't matter if the sun and the clouds have more effect. It only matters that one variable is changing, slowly but surely pushing the equilibrium.
Actually there are various climate and other scientists who have this position. These scientists usually don't depend on grants and such for research.
The thing is, whomever I will link, you will have some accusation that the scientist’s opinion cannot be trusted for whatever reason. So discussion regarding this issue is kinda pointless anyway.
Time will proof these scientists opposing the human induced climate change narrative to be correct however.
Unless you're discussing literal "human expelled co2", as in "the measure of peoples exhalations during breathing", then you're out by several orders of magnitude. The pre-industrial co2 concentration in the atmosphere trends between 180ppm - 300ppm. In the last hundred years, the concentration has increased to 420ppm.
https://climate.nasa.gov/vital-signs/carbon-dioxide/
For reference, each 1ppm in the atmosphere is around 7.8 gigatonnes of CO2. Humans currently create around 40gigatonnes of CO2 per year, roughly equating to 5ppm added per year. We add equivalent to 0.8% of the atmospheric CO2 per year.