Climate alarmism is based in substantial part on the assumption that
other causes of global warming can be accounted for, and whatever is
left over must be due to human-emitted CO2. This sort of reasoning is
rarely valid, but it is particularly inappropriate in a field as little
understood as climate. One obvious reason why the Earth has gotten
warmer and colder over the millenia is that the amount of energy put out
by the Sun varies. Moreover, over the last few centuries,
sunspots–considered to be a good proxy for solar activity–have
correlated very closely with Earth temperatures. More sunspots equal
higher temperatures.
It shouldn’t be a surprise that variations in the Sun’s output are
responsible, at least in part, for variations in Earth’s temperatures.
The problem is that if you simply do the math on radiant heat, the known
increase in solar activity during the second half of the 20th century
accounts for only a small portion of the assumed increase in temperature
over that period. So the alarmists have denied that the Sun plays a
significant role. More recent work has strongly suggested that solar
radiation plays a role above and beyond radiant heat, by influencing
cloud cover, which is a key factor in temperature. Given the strong
correlation between solar activity and temperature, this work has been
persuasive.
Read the full article...shocking stuff (not)
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