Clouds Cannot Be Usefully Modeled but Appear to Play a Very Important Role in Climate Change

via Carlin Economics and Science
http://ift.tt/1gVT2t3

What if the climate alarmists are looking in entirely the wrong place for what controls global temperatures? They claim the answer is emissions of carbon dioxide (CO₂) by human activity and that humans must redirect vast scarce resources to reduce such emissions. Most of the best scientific evidence points away from their favorite bogeyman (CO₂), or as they mischaracterize it, “dirty pollutant.” Previous posts have presented much of this evidence. But if it is not CO₂ that determines temperatures, what is it?

Changes in the Density of Low Clouds

One very interesting possibility is visible everyday to humans, unlike CO₂, which is invisible. The ideas have been around for several decades, but seem never to have received much attention. All that is needed, however, to see this possibility is to look out the window at the sky. An important answer appears to be low clouds. The climate alarmists’ General Circulation Models (GCMs) have great difficulty in explaining how clouds behave, one of the many fatal drawbacks of their models. Clouds change rapidly and are clearly non-linear and chaotic.

But is there a plausible mechanism that controls them that would explain climate change? Some controls include the availability of water vapor, which condenses into clouds, and various determinants of evaporation of surface water to form water vapor. It is all very complicated and not easily modeled by the alarmists’ useless GCMs.

The Key Role Apparently Exercised by Galactic Cosmic Rays

One possibility for understanding some of this is the effects of galactic cosmic rays in the creation of nuclei that promote condensation of water vapor into clouds. Despite great hostility from climate alarmists towards anyone who deviates from their doctrines, it has now been shown that increased cloud condensation nuclei lead to more water vapor condensation, more clouds, and lower temperatures. One determinant of such nuclei are cosmic rays from distant supernova, which are affected by solar fluctuations as they enter the solar system.

The density of such cosmic rays is affected by where the solar system is located relative to the supernova from which the particles originate as well as fluctuations in our Sun, which change the number of galactic cosmic rays that reach Earth’s atmosphere. Much of this is summarized in my book and more recently by Mike Jonas.

Climate alarmists should find it useful to read this and other evidence for what is called the Svensmark hypothesis (after the discoverer) rather than engaging in further repetition of their CO₂ mantra, which has now been shown to have no significant effect on temperatures.

via Carlin Economics and Science http://ift.tt/1gVT2t3

June 16, 2017 at 08:41PM