It's been heatwaves and droughts and stuff unlike anything we've seen since I was in primary school.
So yeah any attempt by us to dick about with the Sun's output is going to be utterly catastrophic, because it's not going to be even as small as a 3% increase or decrease.
https://www.stce.be/content/sc25-tracking
The solar cycle is not the cause of heatwaves and droughts. The graph at the top of this Wikipedia page shows the solar irradiance trending down over decades (which is a natural phenomenon) while temperatures have increased.
Say what? Isn't that off by 1 or 2 orders of magnitude? [0] 1% would be enormous.
And yet, with similar numbers of sunspots, the weather is identical to the early 80s which was the last time the Sun did anything.
Radio propagation right now is absolutely mental, which is directly correlated.
What about cycle 22 or 23?
Almost any attempt to change the sun's output is going to have a 0.000% change. It is very much not easy to affect something that size.
> These technologies promise to reverse global warming by reflecting away a portion of the sunlight reaching Earth, for example by spraying particles of sulphur dioxide or some other manufactured substance into the atmosphere.
The global maritime shipping industry has already been doing this, by accident, and their stopping (going to better fuel oil with less sulfur in it) has detectably raised global temperatures. [https://cpo.noaa.gov/the-unintended-consequences-of-reducing...]
But, second, yes, I know what they're talking about. I also know about the shipping thing. So (honest question), while that was happening, did it reduce the sun's radiation to the ground by 1%? 0.1? 0.01?
But it was enough to make a measurable difference in temperature. To make a meaningful difference in temperature is going to take, say, 10 times as much sulphur as the ships were putting out, or else putting it at more strategic layers of the atmosphere. So "most attempts" (most people who say "let's do this") aren't going to get anything like the scale that is needed.