The grim report revealed that man-made global warming will further increase mean annual temperatures and humidity, causing extreme heat waves so intense that human survival would be impossible.
Climate scientists used a wet-bulb test that combines the heat and humidity predictions. Using this test, scientists found out that when the threshold reaches 35 degrees Celsius and stayed for long periods of time a human body can no longer cool itself off by sweating. This summer, the Persian Gulf states had wet-bulb temperatures peaking at 34.6 degrees Celsius.
"Our results expose a specific regional hot spot where climate change, in the absence of significant [carbon cuts], is likely to severely impact human habitability in the future," Jeremy Pal and Elfaith Eltahir of the Massachusetts Institute of Technology said in the journal.
A number of big cities, especially on the coast including Abu Dhabi, Dubai and Doha will soon become uninhabitable, forcing many people to move to other places in the world.
Wealthy Gulf nations would probably combat extreme weather by increasing the use of air conditioning, but their poor neighbors, in countries such Yemen, would suffer greatly.