The anthropogenic global warming (AGW) hypothesis states the greenhouse emissions will warm the lower atmosphere, which will then result in a subsequent warming of Earth's surface. Yet, since 1998 the surface has warmed (more on that surface "warming" here and here) while the atmosphere had not warmed at all through 2015 - this is a major AGW hypothesis disconnect.
====
In addition, the AGW hypothesis assumes that increasing greenhouse gases will cause the triggering of major positive feedbacks that in turn will cause dangerous, accelerated warming in the atmosphere and then the surface. In reality, the "dangerous, accelerated warming" has not taken place, anywhere.
======
The CO2-centric AGW hypothesis, and climate models, assume that every additional emission molecule of atmospheric CO2 will accelerate the global warming, to the point of no return. Thus, each new tonne (metric) of CO2 will boost the acceleration via a theoretical positive feedback amplification.
But does the empirical evidence actually indicate that is indeed what is taking place?
====
The observed shrinking of CO2's influence on global warming does not bode well for the future longevity of the AGW hypothesis.
=====
The IPCC's catastrophic AGW (CAGW) hypothesis is based on the prediction that human CO2 emissions would produce a "hotspot" in the atmosphere above the tropics. This hotspot was identified by the IPCC as the penultimate evidence that global warming was accelerating...
The tropical, runaway hotspot did not happen in spite of massive amounts of CO2 emissions released into the atmosphere; ergo, the IPCC was wrong, again; the billion-dollar climate model predictions were wrong, again; alarmist, agenda-driven scientists' claims of climate doomsday were wrong, again; and, the fanatical anti-CO2 green lobby was wrong, as always.
======
AGW alarmist climate scientists predicted that increasing human CO2 emissions would cause an increase in water vapor with the result being a global warming tipping point - empirical evidence completely discredits that prediction.
=====
The runaway global warming scenarios of the IPCC climate models are based exclusively on a hypothesized positive climate feedback - satellite data reveal a powerful negative cloud feedback instead....
=====
But the actual climate empirical evidence (ie, non-warming world, lower ocean temps) and cold weather events has now forced
CO2-centric global warming alarmists into a pretzeled logic that ultimately supports the overall negative feedbacks of global climate as understood by CAGW-skeptics, not the positive feedbacks pushed by the IPCC.
======
IPCC "experts" and climate models predicted that CO2 increases would cause runaway growth in atmospheric water vapor & temperatures - wrong on both counts...
Establishment science and coastal elites are literally besides themselves as the empirical evidence continues to affirm that the "consensus" IPCC catastrophic AGW hypothesis is at best, lame, and more likely just plain invalid.
====
e essential foundation of the AGW hypothesis is that CO2 atmospheric increases block the escape of infrared radiation and increasingly bounces the infrared warming back to the Earth's surface to warm it. But when examining the empirical evidence, the infrared radiation bouncing back to Earth is mostly decreasing, not increasing.
====
IPCC science predicts that as CO2 increase in atmosphere, the resulting warming will increase the atmosphere's water vapor levels, which will cause more warming (a positive feedback).
Unfortunately for the IPCC, that major tenet of the AGW hypothesis has not worked so well, as the below atmospheric humidity chart from
www.climate4you.com reveals.
=====
Climate models have been programmed to produce a thawing of the tundra permafrost from human CO2-induced warming. This tundra "melting" will produce an explosion of CO2 and methane gas into the atmosphere. This is the mighty lore of the AGW hypothesis, thus models must be instructed to simulate this outcome. Fortunately, the AGW hypothesis and climate model programmers were wrong - like big time.
=====
Satellite Data: Theory That CO2 Causes Positive Water Vapor Feedback, Which Then Boosts Temperatures Seems Not To Work....
Another failure for the IPCC climate models and the overall CO2 AGW hypothesis that relies on a phantom positive feedback water vapor mechanism - the climate opera is at the curtain call and the phantom is AWOL