Talk:Sahara pump theory
|WikiProject Meteorology||(Rated C-class, Mid-importance)|
|WikiProject Archaeology||(Rated Start-class, Low-importance)|
Here is a recent archaeological discovery http://www.bbc.com/news/world-middle-east-26841410 — Preceding unsigned comment added by 184.108.40.206 (talk) 20:21, 3 April 2014 (UTC)
Reference to broken DOI
A reference was recently added to this article using the Cite DOI template. The citation bot tried to expand the citation, but could not access the specified DOI. Please check that the DOI doi:10.1073͞pnas.0510792103 has been correctly entered. If the DOI is correct, it is possible that it has not yet been entered into the CrossRef database. Please complete the reference by hand here. The script that left this message was unable to track down the user who added the citation; it may be prudent to alert them to this message. Thanks, Citation bot 2 (talk) 01:29, 30 April 2010 (UTC)
Lack of clarity
I reckon to be able to follow popular science articles, but this entry had me beat.
It needs re-organising to make it more coherent, starting with an explanation of why this theory is called the Sahara "pump", and then explaining whether this is a one-off event as seems implied by the first paragraph,
"Regardless of the aridity of the greater Sahara, migration along the river corridor was halted when, during a desert phase 1.8-0.8 million years ago (Ma), the Nile ceased to flow completely and possibly flowed only temporarily in other periods due to Nubian Swell uplift."
or a repeating one, as in the second section:
"During periods of a wet or "Green Sahara", the Sahara and Arabia become a savannah grassland"
On re-reading, perhaps the best answer would to put this section labelled "Mechanism" as the first "summary" section, as it seems rather clearer than the existing bit.
I'm not inclined to try changing it myself, as I'm definitely not a historical climatologist, but if this article is intended to be read by general readers, or those with some historical but no scientific training, then it needs:
a summary passage/definition section at the beginning
a little less of those terms which will only be understood by those with a text book to hand.
fewer casual references to "Nubian Swell Uplift" may be useful to geology (??) undergraduates, but not to the rest of us - at least in the top section.
lists of animals are probably excessive at this level of detail, given that the point of the article is - presumably - the scientific event.
As a general point should Wiki as a whole settle for the Ka/Ma system or the BP system, rather than mixing them?