Satellite images show Lake Chad one-tenth the size it was in 1972, not even 40 years ago. Lake Chad used to be the world’s sixth-largest lake, but its resources have been diverted for human use or affected by rainfall such that its been almost entirely depleted in a very short amount of time:
In the IPCC’s 2007 report (PDF) on impacts, vulnerability and adaptation in Africa, there is no specific mention of Lake Chad. But staring at these satellite images one can’t help but wonder how global warming, which is expected to cause drastic changes to the hydrological cycle (drought, rainfall, water levels, etc.), especially in Africa, will accelerate or contribute to the already scarce resources that this map demonstrates are a stark reality.