Sentences with phrase «multiple orbital cycles»
Not exact matches
Multiple causal factors have been suggested for the LIA: insolation change due to orbital cycles; low solar activity; high volcanic activity; and reduced atmospheric CO2 due to forest regrowth following human population collapses (the «Black Death» in Europe and Asia, and Columbian contact in the Americas.)
http://www.realclimate.org/
The longer ocean cycles also appear to be close integer multiples of the solar cycle, similar to the resonance we see in orbital cycles.