Pints, it’s a perfectly reasonable question to wonder if changes in the sun’s radiation hitting Earth has been a major cause of global warming in recent decades. Perfectly reasonable.
so why not try to find out the answer from a scientific source Whose expertise and credibility is beyond reproach. Anyone can do this, even you Pints. Google NASA solar radiation climate and you will get the answer to the question you asked.
here’s what NASA says on its Internet site on the issue.
NASA:
”How do we know that changes in the Sun aren’t to blame for current global warming trends?
”Since 1978, a series of satellite instruments have measured the energy output of the Sun directly. The satellite data show a very slight drop in solar irradiance (which is a measure of the amount of energy the Sun gives off) over this time period.
“So the Sun doesn't appear to be responsible for the warming trend observed over the past several decades.
”Longer-term estimates of solar irradiance have been made using sunspot records and other so-called “proxy indicators,” such as the amount of carbon in tree rings.
“The most recent analyses of these proxies indicate that solar irradiance changes cannot plausibly account for more than 10 percent of the 20th century’s warming.2”
