A one square meter flat object at the interface between earth’s atmosphere and outer space. Right. And that object is a perfectly reflective black body radiator. So, ideally, you are building a computer model of how that works, a model of this theory is as good as it will ever be.  It has no practical use in the real world.  Anything which correlates to the model is equally unrealistic and impractical.  TSI (Total Solar Irradiance) is total computer hypothesis.

However, the real problem created by proponents of human-caused global warming (aka climate change) is entirely different, so of course the answer is entirely different.

What’s the point of making any hypothesis which cannot be tested?

There is only one answer to that question.

No one can measure that one square meter object floating/suspended in space-time…ever…cannot be measured with current technology.  More science needed.  It’s an untestable computer model. And we have spent billions of dollars to build that computer model.

We could have used that money on research toward making fusion a viable energy alternative.

We could have built seawater desalinization plants powered by nuclear power plants, all known technology available to public and private uses.

We could make geothermal energy reliable and profitable.

We could have done research to improve efficiency of fossil fueled engines.

Instead we invested billions of dollars into computer programs which are asking the wrong questions.