Mediterranean flood

"Once upon a time there was a massive flood across the Mediterranean Sea, an in-pouring of water so huge that it excavated a canyon five kilometres deep and 20 kilometres long, and created a waterfall with a 1.5 kilometre drop."

This was about 5.3 million years ago.

Did this change in Atlantic currents have effects on the climate? I figure that if it refilled in 2 years as the article says, the volume of water moving would have been about 1/2 of the circumpolar current, so this could have been significant, especially if it drained from one direction more than another--Coriolis effect should send some north water down and out into the Atlantic. I'm not sure what effect this would have, though. These days the north-south current there is warm, not cold.

It is way too early to have any bearing on Ice Ages (2.6 million years ago).