<P> The observed planetary energy imbalance during the recent solar minimum shows that solar forcing of climate, although natural and significant, is overwhelmed by anthropogenic climate forcing . </P> <P> In 2012, NASA scientists reported that to stop global warming atmospheric CO content would have to be reduced to 350 ppm or less, assuming all other climate forcings were fixed . The impact of anthropogenic aerosols has not been quantified, but individual aerosol types are thought to have substantial heating and cooling effects . </P>

Largest amount of energy the earth from sun