High level clouds and surface temperature

Guest post by Erl Happ The orbit of the Earth’s around the sun is slightly eccentric. The closest point is called the perihelion. On January 4th the Earth is just 147,098,291 km away from the sun. Aphelion occurs July 4th when the Earth is 152,098,233 km away from the sun, a difference of +3.3%. Naturally…

About these ads

Cloud cools

Guest post by Erl Happ This post was generated in response to the Christopher Monkton thread. It is not a criticism of Christopher Monkton but of our tendency to imagine that artful mathematicians (I am not one) are sufficiently sophisticated to deal with complex problems.  Indeed the debate as to the value of feedback processes…

Where is Science?

Guest post by Erl Happ The Southern Oscillation Index is a reference point for the strength of the Trade winds. It represents the difference in atmospheric pressure between Tahiti and Darwin. In figure 1 the SOI is the red line with its values on the right axis. A negative SOI reflects slack trade winds and…

The character of climate change part 4

Guest post by Erl Happ This post is best read after viewing parts one, two and three that set the scene for what is described here. I noted in parts 1 and 2 that variability in global temperature is greatest between November and March when the globe is coolest. This is related to high variability…

The character of climate change part 3

Guest post by Erl Happ Here’s a hypothetical: Let’s imagine that we have an atmosphere of two parts.  The first 10 km of the atmosphere has no greenhouse gas.  The second 40 km has a greenhouse gas incorporated. In the lower layer there is  water vapor and clouds that come and go according to the…