Greenhouse Efficiency Insights
17 hours ago
Guest Post by Willis Eschenbach
Abstract: Using the CERES satellite data, it is shown that over the last ~ quarter century, the increase in greenhouse gases has had no detectable effect on the global average surface temperature. On the contrary, the overall increase in available solar energy after albedo reflections is shown to be sufficient to explain the warming. In support of this, variations in available solar energy are shown to agree quite well with the variations in the observed temperature. Go figure.
I got to thinking again about how to measure the efficiency of the very poorly-named “greenhouse effect”, which has absolutely nothing to do with actual greenhouses like the one shown above. Here’s an overview of some of the major energy flows of the climate system.
Figure 1. Monthly surface upwelling longwave (thermal) radiation, along with solar radiation at different altitudes. Equivalent temperatures are calculated using the Stefan-Boltzmann equation. Seasonal variations removed.
The red line shows the 24/7/365 global average solar radiation that strikes the planet, 340 watts per square meter (W/m2) of planetary surface area. However, part of that radiation is reflected back out to space.
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