A Buttery Pastry posted:

Outside the issues already presented, there is also the fact that you'd see the opposite effect of going up a mountain; the temperature would be higher in these low-lying areas than are the current coastlines. Hotter, drier, and saltier is not a recipe for an agricultural miracle. Hell, apart from the saltier part it's basically what's projected for the Mediterranean countries as is, and the forecast puts their future agricultural output as significantly lower than present some decades from now. Going the other way by using techniques that help retain water in an area and growing crops which are suited to the region would probably be a better idea. Like, the deserts of North Africa are basically what you'd be left with, so why not just try to improve them directly?