2008/4/30 malcolm <[EMAIL PROTECTED]>: > > Two things worry me about the earth's global warming: > > 1 We (the earth) orbit in an oval shape around the sun centered on one > of the one of the focal points. This gives one 'half year" about 7 > more days than the other. Precession seems to get the blame for the > siderial year being about 20 minutes longer than the earth year. I > believe it is the Anomalistic Year that causes this. I cannot find an > informative source of knowledge to confirm this but it seemes to me > that the southern hemisphere continually gets more radiation from the > sun. This 20 minute difference causes the calender year to circle the > stars in about 70 years. Precession would only account for 3 seconds a > year and it ought to be accounted for in the 24 hours a day anyway. Do > scientists take this into account in their global warming > calculations?
The hadley model usually runs with a 360 day year for convenience, so I doubt 20 mins would matter much :-) > 2 Eversince the industrial revolution started we have been using fuel > of some kind to drive our machinery. Now we are told in one of our > first lessons in physics that one cannot destroy energy it is always > converted to another form. So a device, a car engine shall do, can be > said to be 75% efficient. That means that 25% of the energy has > already been discharged in to the atmosphere as heat. The car goes > along the road at 100 km/hr heats the air that it is forced through, > expends heat at various poinst like the breaks, tyres, and the > surface of the road. > > When the fuel tank is empty every last Joule of energy in the in the > fuel has been left behind in the atmosphere as a temperature rise. In > other words for 250 years every bit of coal, oil, gas, and wood > including bush fires and depleation of the forrests - has left heat in > the atmosphere. > > The scientists seem to be yelling about carbon dioxide heating the > globe. I would like to see some sums, do they include the above two > factors? http://mustelid.blogspot.com/2005/04/global-warming-is-not-from-waste-heat.html Maybe someone else has done it better by now. And I never likes pleated forests anyway. -W -- William M. Connolley | www.wmconnolley.org.uk | 07985 935400 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/globalchange -~----------~----~----~----~------~----~------~--~---
