One should always take any Internet source with a degree of skepticism. So this description of the mechanics of global warming caught my eye: 0:00 - 1:51 - elementary description of how a green house works. 1:52 - 2;44 - infrared absorption mostly within 20 meters. 2:45 - 3:15 - how misunderstanding leads to false claims of hoax. 3:16 - 4:31 - Planck's law or black body radiation spectrum. 4:32 - 5:26 - Earth's surface temperature without atmosphere would be -18 C. 5:27 - 6:45 - Conversion of absorbed light into heat. 6:46 - 7:16 - Surface distribution of the heat. 7:17 - 7:52 - Temperature, Density, Pressure of atmosphere. 7:53 - 8:58 - Introduces adiabatic cooling as altitude increases, 8:59 - 9:28 - Graph of atmosphere temperature vs altitude. 9:29 - 10:32 - Assumption that the temperature gradient has not changed since pre-industrial. 10:33 - 12:44 - Review of different greenhouse gasses and absorption versus altitude. 12:45 - 13:38 - Unique properties of CO{2} and the absorption "ditch". 13:39 - 14:15 - Scale of green house gas effects give us a narrow, 16 C average temperature. 14:16 - 15:20 - Introduces Stratospheric Cooling. 15:21 - 16:24 - How upper altitude cooling occurs along with surface heating. 16:25 - 17:20 - Details about the feedback loop of green house gas, global warming. 17:21 - 19:51 - Credits and a word from our sponsor. Living in Huntsville AL, we have two climate change deniers, Spencer and Christy, who analyze upper atmosphere, satellite data. Their small temperature change (UAH) is in stark contrast with Remote Senssing Systems (RSS) and other data analysis: Source: What causes the differences between the data series? | PBL Netherlands Environmental Assessment Agency Somethings are difficult to measure and atmosphere temperatures from satellite observations would be in that set. But in empirical science, we look for different teams using their methods come up with similar results. By that metric, UAH is an outlier of the five teams analyzing the data. Bob Wilson
I remember when I first heard that the upper atmosphere was cooling! I did some more research and discovered how that was actually consistent with climate change and therefore, not a good signal.
