"Internal oscillations" refers to repetitive movements or fluctuations that happen within something or someone's own system or structure. It implies a regular back-and-forth motion or rhythm occurring within an individual or an object.
Sentences with «internal oscillations»
There may be self sustaining internal oscillations which feed the changes in SST / air circulation / cloud cover / radiation balance, back and forth (AMO?). (realclimate.org)
Climate variability best describes the shorter multi-centennial trends which are merely the overprinting internal oscillations on longer - term climate change. (co2coalition.org)
Decadal and longer internal oscillations could explain the temperature record of the last 100 years. (realclimate.org)