The Global annual average flows of energy under present day climate conditions. (metlink.org)
I'm particularly interested in how present day climate differs from climates in the past, and what may have caused climates to change. (geo.umass.edu)
So we see that comparisons of present day climate to periods 500 million years ago need to take into account the fact that the sun was 4 % less active than now. (skepticalscience.com)