Environment Forum

Floods? Droughts? Wildfires? Hurricanes? Yes, there is a climate change connection

For years, climate scientists were circumspect when asked if a specific bit of violent weather — for example, Hurricane Irene, the late-summer storm that slammed the heavily populated U.S. East Coast — could be blamed in some way on climate change.

“Climate is what you expect,” the scientists would say, “while weather is what you get.” They would often go on to say that while increasingly severe weather and correspondingly serious costs and consequences were forecast in climate change computer simulations, there was no way to directly blame a given storm on human-generated heat-trapping gases in Earth’s atmosphere.

There still is no direct line between a certain amount of warming and a certain storm, wildfire, drought or flood. But there is a “new normal,” detailed by scientists on a new website . Staffed and advised by some of the most well-known climate change experts in the United States and elsewhere, the site says plainly that what the computer models foretold in 2007 is clearly documented to be occurring.

“All weather events are now influenced by climate change because all weather now develops in a different environment than before,” the Climate Communication site noted in an article released days after Irene dumped record amounts of rain on the U.S. Mid-Atlantic and Northeast.

“While natural variability continues to play a key role in extreme weather, climate change has shifted the odds and changed the natural limits, making certain types of extreme weather more frequent and more intense. The kinds of extreme weather events that would be expected to occur more often in a warming world are indeed increasing.”

As if 2007 never happened?

If four years is a lifetime in politics, it’s an eternity in climate change politics. Events in Washington this week might make climate policy watchers wonder if 2007 really happened.

At issue is the decision by American Electric Power to put its plans for carbon capture and storage on hold, due to the weak economy and the lack of a U.S. plan to limit emissions of climate-warming carbon dioxide. Read the Reuters story about itĀ here.

Carbon capture and storage, or CCS for short, has been promoted as a way to make electricity from domestic coal without unduly raising the level of carbon in the atmosphere. Instead of sending the carbon dioxide that results from burning coal up a smokestack and into the air, the plan was to bury it underground. But that costs money and requires regulatory guarantees, and neither are imminent in the United States. Legislation to curb greenhouse gas emissions bogged down on Capitol Hill a year ago and has not been re-introduced.

  •