Experts said that there are several factors that can be responsible for the European refugee crisis, but they said so far, they are certain about the fact that the present crisis is not due to the climate change. But they also warned that the world is dragging towards a point where climate change will be the dominating factor behind mass migration event.

As the sea levels are slowly swallowing Pacific island nations, warming sea and air temperatures exacerbating droughts, the world is slowly moving closer than we've ever been to a climate change-triggered migration event.

The US President, Barack Obama, also warned last week in a speech in Anchorage, Alaska, on September 2, about the consequences of business as usual in the face of global warming pollution.

“People will suffer. Economies will suffer. Entire nations will find themselves under severe, severe problems. More drought; more floods; rising sea levels; greater migration; more refugees; more scarcity; more conflict”, he said.

There is evidence which showed that global warming contributed to a severe drought that preceded the Syrian civil war, but climate also links to some other conflicts that are contributing to the tide of refugees, such as the war in Yemen, are not yet established.

A study published in Proceedings of the National Academy of Sciences last year showed that global warming almost tripled the risk of a crippling drought in the Fertile Crescent.

Some previously conducted studies have shown that drought, along with other factors such as an influx of refugees from the conflict in Iraq, helped prime Syria for conflict by 2011, when the uprising began.