..I personally, would love to read that article, as I'm sure many others here would as well.
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That article?" You have to find this stuff in journals these days, and read a number of them to figure this out. Here's how:
Go to a university level research library. Look for the SCI (Science Citation Index). They may have an online free, or pay-for-use version. Your search terms if you want the knowledge:
1.) Dust surface radiative cooling
2.) Cloud nuclei insolation reflective cooling
3.) Visible moisture nuclei India Sahel monsoon
Look for abstracts regarding the Sahel with the first search terms. This will yield journal articles that will give you background information on how low altitude atmospheric contaminants affect the mid-Africa weather patterns. NOAA has some excellent articles regarding this; some of these even have some impressive graphics.
Regarding the second search terms, these will yield journal articles that talk about mid and high-altitude weather effects, namely how normal cloud nuclei (smaller airborne particulates) used to be the norm in producing visible clouds, and how larger airborne particulates (produced by dirtier industries) are changing continental and overwater cloudscapes. Insolation is a geologic and meteorologic term, short for "incoming solar radiation."
Finally, the third search terms. This puts it all together. You end up with articles detailing how the low altitude effects were smothered by man-made effects from rising industrial pollution from India, and how increased cloud cover seeded by pollution borne by mid to high-altitude winds actually increased cloud cover over Africa, cooled enough of the continent to prevent the heating required to drive the seasonal monsoon belt into the Sahel...and hence, the increased desertification of that region.
Call me a geek, but whenever I find myself on a large collegiate campus, I like to visit the libraries. A former co-worker used to actually have climatologists for friends (he is far too smart for his current job)...so I had to ask how to find true scientific research regarding this. His big take...you can only find politics on the web, finding the results of true science requires research.
I used to use SCI a lot, so finding this wasn't as hard as I thought it might be, but it still wasn't easy. As well, you have to read. Research libraries usually do not let you check out journals in the same way you'd check out books, hence the gazillion photocopy machines they have on hand.
Also, I heard that NOVA actually made a program covering this, but I'd sure like to know the title...I understand it integrated all 3 topics that I described above into a comprehendable 1-hour show. Now THAT is an achievement. I also understand, though, that they made some claims regarding global cooling / heating and insolation that are untrue (i.e., did not use a full atmosphere model), but in spite of the political slant (i.e., a little trash science made its way into the program), it is supposed to be a pretty good show about the sub-Saharan regional climate change problem, and it's a big region.
NA