In reply to MSF's message of Fri, 20 Sep 2024 01:21:46 +0000: Hi, [snip] >Hello, Robin > >Unless I'm misinterpreting, you are saying that your "Indian Summer" happens >in the Australian spring in order to be simultaneous with the American >equivalent in the autumn.
Correct. At the end of Winter we get a sudden warm period, then it gets colder again, sometimes right up till Christmas (which of course is in Summer for us.) > >The sun itself rotates at approximately once every 30 days, depending on the >solar latitude. So there is no hot spot to be exposed toward the earth at any >given time. This is a good point, however surface rotation may not be the whole story. Suppose that there is a deeper lying hot spot that doesn't rotate? > Indian summer is a cultural interpretation of nice warm weather in the > autumn. Why it should be associated with native Americans I'm not sure. > >M. Alternative suggestions as to why this time of year is warmer, are welcome. ;) (Initially I thought it might be due to perihelion, but this happens in January.) Regards, Robin van Spaandonk Drive your electric car every second day and recharge it from solar panels on your roof on the alternate days. The other days, drive your spouses car, and do the same with it. "Charge when the Sun shines".
