Submitted by Anonymous on Fri, 11/06/2009 - 07:35.
This is not directly related but is an example of amplification I have not seen commented on elsewhere.
It is widely accepted that the cycle of ice ages is driven by the Milankovitch cycles. The change in solar radiation at 65N in July is taken as an indicator and this varies by 24%. However the change in whole-earth-whole-year radiation is much smaller: 0.7% maximum over the several cycles. What is interesting is that the change in whole-earth-whole year radiation which took us out of the previous ice age was very much smaller only 0.07%. This is an example of how very small changes can be amplified to produce major effscts. See: http://www.climatedata.info/Forcing/Forcing/milankovitchcycles.html
![[SOHO Sun Spot Image]](http://sohowww.nascom.nasa.gov/data/realtime/mdi_igr/512/latest.jpg)
Amplification
This is not directly related but is an example of amplification I have not seen commented on elsewhere.
It is widely accepted that the cycle of ice ages is driven by the Milankovitch cycles. The change in solar radiation at 65N in July is taken as an indicator and this varies by 24%. However the change in whole-earth-whole-year radiation is much smaller: 0.7% maximum over the several cycles. What is interesting is that the change in whole-earth-whole year radiation which took us out of the previous ice age was very much smaller only 0.07%. This is an example of how very small changes can be amplified to produce major effscts. See:
http://www.climatedata.info/Forcing/Forcing/milankovitchcycles.html