The data listed in the notes I appended were old—just an illustration the sort of data used in climate models for CO2.
I don’t expect Ian to include all data used in current models. He is not running a model on a Cray supercomputer. The Cray XC40TM cost the UK Met Office 97 million pounds in 2015. Students should be made aware that actual climate models are more complex than could run in TABULA because they would otherwise be skeptical of any results reported. Climate models of increasing complexity have been created since 1970’s. Over the last forty years there is satellite observations that show among other things that the surface of the planet has warmed, the upper atmosphere has cooled, the oceans are gaining an enormous amount of heat, sea level is rising, Arctic and Antarctic and Greenland and Iceland ice has receded and glaciers around the world are retreating. Specific measurements from low earth orbit satellites indicate that the total greenhouse effect has been enhanced exactly as theory and models predict. Climate models predict how average conditions will change which is important when comparing predicted to actuals—you would not expect a match for each specific year but you would want values to fall within a reasonable plus or minus range. Climate model projections are evaluated here: https://www.carbonbrief.org/analysis-how-well-have-climate-models-projected-global-warming Donna Y [email protected] > On Jun 22, 2019, at 4:10 PM, Björn Helgason <[email protected]> wrote: > > skrifaði > Relying on false data and defect models does not help much. > it is mostly scaremongering and does not seem to lead anywhere. > we have no explanation and nothing we can do. > scaring kids is mostly just cruel. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
