Archives for September 25, 2007

Climate change ‘a bigger threat than terrorism’

CLIMATE change, not terrorism, will be the main security issue of the century, with potential to cause death and destruction on an unprecedented scale, Australia’s top policeman believes.

In a surprise foray into the politics of global warming, Australian Federal Police commissioner Mick Keelty described how climate refugees “in their millions” could create a national security emergency for Australia.

His provocative comments, made in a speech in Adelaide last night, are likely to be diplomatically sensitive after he described a scenario in which China was unable to feed its vast population.

Law enforcement agencies would struggle to cope with global warming’s “potential to wreak havoc, cause more deaths and pose national security issues like we’ve never seen before”, Mr Keelty said.

“It is anticipated the world will experience severe extremes in weather patterns, from rising global temperatures to rising sea levels,” he warned.

“We could see a catastrophic decline in the availability of fresh water. Crops could fail, disease could be rampant and flooding might be so frequent that people, en masse, would be on the move.

“Even if only some and not all of this occurs, climate change is going to be the security issue of the 21st century.”

Read more.

The Associated Press article ‘Rising Seas Likely to Flood U.S. History’ is criticised here.

The article begins:

Ultimately, rising seas will likely swamp the first American settlement in Jamestown, Va., as well as the Florida launch pad that sent the first American into orbit, many climate scientists are predicting.
In about a century, some of the places that make America what it is may be slowly erased.

Global warming—through a combination of melting glaciers, disappearing ice sheets and warmer waters expanding—is expected to cause oceans to rise by one meter, or about 39 inches. It will happen regardless of any future actions to curb greenhouse gases, several leading scientists say. And it will reshape the nation.

Rising waters will lap at the foundations of old money Wall Street and the new money towers of Silicon Valley. They will swamp the locations of big city airports and major interstate highways.

Storm surges worsened by sea level rise will flood the waterfront getaways of rich politicians—the Bushes’ Kennebunkport and John Edwards’ place on the Outer Banks. And gone will be many of the beaches in Texas and Florida favored by budget-conscious students on Spring Break.

That’s the troubling outlook projected by coastal maps reviewed by The Associated Press. The maps, created by scientists at the University of Arizona, are based on data from the U.S. Geological Survey.

Few of the more than two dozen climate experts interviewed disagree with the one-meter projection. Some believe it could happen in 50 years, others say 100, and still others say 150.

Sea level rise is “the thing that I’m most concerned about as a scientist,” says Benjamin Santer, a climate physicist at the Lawrence Livermore National Laboratory in California.

“We’re going to get a meter and there’s nothing we can do about it,” said University of Victoria climatologist Andrew Weaver, a lead author of the February report from the Intergovernmental Panel on Climate Change in Paris. “It’s going to happen no matter what—the question is when.”

Sea level rise “has consequences about where people live and what they care about,” said Donald Boesch, a University of Maryland scientist who has studied the issue. “We’re going to be into this big national debate about what we protect and at what cost.”

Critics included John Christy:

Alabama State Climatologist Dr. John Christy of the University of Alabama in Huntsville, stated that the AP mischaracterized his views on sea level in the article promoting climate fears a hundred years from now.

“[My] discussion [with the AP reporter Seth Borenstein] was primarily about the storm surges which come from hurricanes – that’s the real vulnerability. The sea level is rising around 1 inch per decade, but sea level is like any other climate parameter – its either rising or falling all the time. To me, 16 inches per century is not a significant problem to deal with. But since storm surges of 15 to 30 feet occur in 6 hours, any preventive strategy, like an extra 3 feet of elevation, would be helpful,” Christy wrote to the Inhofe EPW Press blog.

“Thinking that legislation can change sea level is hubris. I did a calculation on what 1000 new nuclear power plants operating by 2020 would do for the IPCC best guess in the year 2100. The answer is 1.4 cm – about half an inch (if you accept the IPCC projection A1B for the base case.) Also, there doesn’t seem to be any acceleration of the slow trend,” Christy explained.