Carbon dioxide is a trivial GHG and its effect is almost saturated. Adding more and more has less and less effect. The Global Warming alarm is based on an assumption made in ALL UNIPCC computer models.
Measurements now prove that assumption is wrong and we can thus conclude that human fossil fuel burning is no cause for alarm.
Opinion 8/20/2014 @ 7:16AM 2,807 views
Declining Humidity Is Defying Global Warming Models
James Taylor Contributor
” …The most important of these assumptions is that a little bit of carbon dioxide-induced warming will create a substantial increase in atmospheric water vapor. Water vapor is a much more potent greenhouse gas than carbon dioxide, so substantial increases in atmospheric water vapor can certainly cause significant warming. United Nations computer models are programmed to assume that absolute humidity (the total amount of water vapor in the atmosphere) will rise so much that even relative humidity (the percent of water vapor in the atmosphere) will at least keep pace and perhaps even increase. Warmer air is able to hold more water than cooler air, so absolute water vapor would have to increase quite substantially for relative humidity to remain constant or increase in a warming world.
Scientists, however, have been measuring relative humidity for many decades. Rather than keeping pace with modestly warming temperatures, relative humidity is declining…. “