Generalized Walker Circulation (December-February) during ENSO-neutral conditions. Convection associated with rising branches of the Walker Circulation is found over the Maritime continent, northern South America, and eastern Africa. [Credit: NOAA Climate.gov — drawing by Fiona Martin] El Niño and 100,000 year glaciation/climate cycles feature prominently in this research. The Walker circulation has been described as ENSO’s atmospheric buddy.
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While it is widely accepted that climate change drove the evolution of our species in Africa, the exact character of that climate change and its impacts are not well understood, says Phys.org.
Glacial-interglacial cycles strongly impact patterns of climate change in many parts of the world, and were also assumed to regulate environmental changes in Africa during the critical period of human evolution over the last ~1 million years.
The ecosystem changes driven by these glacial cycles are thought to have stimulated the evolution and dispersal of…
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Utopia, you are standing in it! 
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