/sci/ - Science & Math

>>10851920
>really? see pic related
LOL this uses a common trick among deniers of aligning the data on a single year. This means that if the data sets disagree widely on that year, the disagreement gets propagated throughout the data. The proper way to align data sets is along an average of several years so that one year's variability does not affect the comparison. Pic related is the data properly aligned.

The image is also lying about what it's presenting. It's not showing 90 models, it's showing 90 model runs of one model, the CMIP 5 model.

Also, the image uses outdated satellite data that was shown to have large errors due to orbital biases. Current UAH data agrees very well with HADCRUT.

Lastly, this doesn't respond to accurate model I posted. Clearly models have not been wrong since the 80s.

>co2 was higher than 1000ppm in the past with the Earth fully populated of life
tell me why it decreased?
This was caused by the evolution of CO2-eating plankton. They covered the oceans and when they died they would sink to the ocean floor. Over millions of years massive amounts of carbon were pulled out of the atmosphere and sequestered, eventually turning into fossil fuel. It was this sequestration which allowed the climate to cool, resulting in the evolution of mammals, including our ancestors. Ironically, we are now releasing that same carbon, that took millions of years to sequester, back into the atmosphere in only a few hundred. What could possibly go wrong?