Sentences with phrase «historic warming»

High sensitivity models may have been tuned to reproduce historic warming by creating high sensitivity to cooling by aerosols.

Aerosol forcing is somewhat relevant to dOSR / dTs, because aerosols have increase dOSR during the period of historic warming.

Longer historic warming trends indicate that carbon dioxide emissions and other anthropogenic greenhouse gases are rapidly warming the planet — so it's not just complex weather systems like El Niño.

There's also historic warm temperatures in Alaska, and the deepest drought in decades across the west...

Never - the-less, despite heroic attempts to posit some offsetting cooling effect which is masking this warming, few people believe we have seen any such historic warming, and the measured warming is more like 0.6 C. And some of this is likely due to the fact that the solar activity was at a peak in the late 20th century, rather than just Co2.

In fact, I will show later that this assumption is really just a necessary plug to prevent their models from overestimating historic warming.

A funny thing happened when they first started running climate models with high CO2 sensitivities in them against history: The models grossly over-predicted historic warming.

Well, taking 3.0 ºC and dividing by our derived extrapolation multiplier of 1.9, we get required historic warming due to man's efforts of 1.6 ºC.

But this has happened before and if we followed the historic warming / cooling cycles over previous millenia, then it would not have been unreasonable for sea - level to drop by 120m then rise again....

Well, this is the same Federal government that can not spare a dime (or more than 0.25 FTE) for bringing up its temperature measurement sites (whose output help drive this whole bill) to its own standards, allowing errors and biases in the measurements 2 - 3 times larger than the historic warming signal we are trying to measure.

It is often argued by AGW supporters that because the historic warming is so close to what the current global warming models say historic temperatures should look like, and because the models are driven by CO2 forcings, then CO2 must be causing the historic temperature increase.