> Neptune's clouds have vanished, and the sun may be to blame (video)
> > By Monisha Ravisetti
> > published about 10 hours ago
> > After analyzing 30 years of data, scientists came to a surprising conclusion about an ice giant in our solar system.
> >formatting link> According to Hansen, this solar maximum has been measured at an additional 0.1 W/m2 at Earth's surface. It just doesn't seem like much compared to the 1000 W/m2 quiescent, but the instrumentation has enough resolution to detect a very slight rise in global temperature because of it. I wouldn't expect it to have much effect. The Earth is so distant from the sun and subtends such a small intercept angle, the attenuation of fluctuation of sun's radiation is huge, apparently around 80 dB. The sun does make a difference with those seemingly focused ejections and so forth. It still remains the biggest source of electromagnetic interference by far on Earth.
Since light is a form of electromagnetic radiation, it's hard to argue with this claim.
The problem with Neptune is that hard UV from the sum is causing photochemical reactions in Neptune's ammonia and methane atmosphere, so the clouds we see in its atmosphere are more likely to be the results of photochemical condensation than the purely thermal condensation that makes ours.