Climate disruption shrinking areas where people can live.

Mexico faces $10 billion in storm/flood damage to roads, schools, clinics, etc every year

By Stephen Leahy

OSLO, Jun 9, 2011 (IPS)

Mass migration will inevitably be part of human adaptation to climate change, experts agree, since parts of the world will become uninhabitable in the coming decades.

Last year, 38 million people were displaced by climate-related disasters such as the flooding in Pakistan and China.

“Human displacement due to climate change is happening now. There is no need to debate it,” Jonas Gahr Støre, Norway’s minister of foreign affairs, told over 200 delegates attending the Nansen Conference on Climate Change and Displacement in the 21st Century in Oslo Jun. 6-7.

Governments and the humanitarian community need to understand this fact – and that it will get much worse in the coming decades, Støre said.

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Without major emissions reductions, climate change could get far worse than anyone is prepared to think about.

“It may be more realistic to consider four degrees C of warming rather than two degrees C,” suggested Harald Dovland, former head of the Norwegian Delegation to the United Nations climate change negotiations.

The world has already warmed 0.8C and will rise to least 1.6 C even if all emissions of carbon and other greenhouse gases ended today, James Hansen, head of NASA’s Goddard Institute for Space Studies, told the conference.

A four-degree C warmer world is a very different planet and risks runaway climate change. Even two degrees C is not safe, Hansen said. 

“The last time the planet was two degrees C warmer was during the Pliocene (five to 2.4 million years ago) and sea levels were 25 metres higher,” he said. “If we burn all the fossil fuels (coal, oil, natural gas) we’re creating conditions that future generations will be unable to cope with.”

Even though a four-degree C warmer world “is choosing the suicidal path”, experts must avoid fuelling xenophobia with predictions of mass migrations and conflicts, says Francois Gemenne, research fellow at the Institute for Sustainable Development and International Relations in Paris.

“This also feeds into a security agenda of panic and paranoia,” Gemenne said.

At least 20 percent of humanity will be at high risk of severe flooding due to sea level rise and extreme rainfall events in the coming decades.

“Too many people live in low-lying deltas and other parts of the world that are becoming too dangerous to live in,” said Gemenne. They will be forced to move and often this movement will be permanent.

Rather than building walls and barriers, countries and the international community need to encourage people to move to safer ground. “Lift the barriers so that people can use migration to adapt to climate change,” he urged delegates.  Continue reading →