Why not? It’s not rocket science, it’s physics. Plus, if I get any of it wrong, somebody will be sure to correct it.
Increasing CO2 in the earth’s atmosphere, being a well mixed gas, persists and increases in all parts of the atmosphere, and since it absorbs and heats and re-radiates some of the IF red not absorbed by any other greenhouse gas, causes a positive imbalance of the radiation budget, leading to warming. The source of the increase in CO2 is both from the warming that naturally is occurring, the oceans release more CO2 than they absorb as they warm, as well as from fossil fuels and cement making. It is also thought that due to deforestation there is a further decrease in the natural sinks, leading to more CO2 staying in the atmosphere each year.
That is the basics. There is of course an increase in other greenhouse gases, some of them artificial compounds with a very long life, and a huge amount of greenhouse effect, which also destroy O3, leading to both warming and cooling effects in the upper stratosphere. NO2 from combustion and agriculture, methane from natural gas leaks, black carbon from incomplete combustion, particulates and aerosols, like SO2 and human caused lower troposphere ozone, changes to hydrology from dams and irrigation and pumping ground water, NO2 and H2O in the lower stratosphere from aircraft, and contrails, as well as vast destruction of tropical and boreal forests for pulp and timber, a huge phosphate imbalance from mining for agriculture use, a huge nitrogen increase from making fertilizers, changes to albedo from paving and rooftops, destruction of reefs and wetlands, and on and on and so forth.
It’s not really that hard if you have studied even a little.
The expected feedbacks from the small amount of CO2 forcing calculated are the real issue, as well as ocean acidification, which could be the biggest problem, but that is far from certain. Once you get into the possible feedbacks, which are usually the realm of fear mongering and disaster scenarios, it get a lot less scientific.
Hows that for starters?