Climate Cycles in the Sahara Desert

[missouriboy]

There was no thread on the Sahara Desert ... and I found this.

When The Sahara Desert Was Green - Science Documentary 2017
www.youtube.com/watch?v=2JcVMkyJoZY

[missouriboy]

This article references studies that linked historic Nile flood failures and resulting famines to large volcanic eruptions.  I believe I remember Sig referencing studies showing Nile River flows being related to ??

www.nytimes.com/2017/10/17/science/volcanoes-ancient-egypt-revolts.html

www.theguardian.com/science/2017/oct/17/asp-or-ash-climate-historians-link-cleopatra-demise-volcanic-eruption-nile

[sigurdur]

Being related to solar cycles.

[sigurdur]

Mississippi shows the same pattern.

[hrizzo]

This article is in Spanish. I translated into English a little excerpt.

Poblaciones del pleistoceno del norte de África: clima en movimiento
www.historiayarqueologia.com/2017/02/poblaciones-del-pleistoceno-del-norte.html


"... the investigations of Larraosaña and his colleagues have detected up to 230 episodes of regreening of the Sahara in the last eight million years. The second map would correspond well to the climate of the late Middle Pleistocene, about 120,000 years ago, or to the beginning of the Holocene, about 11,000 years ago.
... During the 230 episodes inferred by Larraosaña and his colleagues, the monsoon rains widened their influence throughout North Africa, leaving sufficient rainfall to transform the continent into a place full of life. The changes were sudden from the perspective of geological time, since they occurred in periods of between 2,000 and 8,000 years. But they also disappeared in very short times."