Environment Forum
Global environmental challenges
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.
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 it here.
Even everyday weather could pack a $485 billion punch
No question about it: this has been a wild weather year so far in the United States, with record rains, droughts, wildfires and tornadoes. But a new study indicates that even routine weather events like rainstorms and cooler-than-normal days could pack a huge annual economic wallop.
Weather’s effect on all sectors of the U.S. economy may total $485 billion a year, as much as 3.4 percent of U.S. gross domestic product, according to research published in the current Bulletin of the American Meteorological Society. It is the first study to apply qualitative economic analysis to estimate the U.S. economy’s weather sensitivity.
Did human activities cause the Mississippi River flood?
As the Mississippi River crested at near-record levels near Memphis, Tennessee, a nagging question surfaced at a Capitol Hill briefing: are people to blame? According to one expert on water and hydrology, the answer is closer to yes than no.
“I’m not suggesting these (floods) are caused by climate change, but there’s very clear scientific evidence that the risk of flooding on the Mississippi River is increasing because of human influence,” said Peter Gleick, president of the California-based Pacific Institute.
from Photographers Blog:
An arctic adventure
The Arctic Ocean in March is basically an ocean of ice. Almost the entire thing is covered from October to June in an icepack that only partially disappears in the summer and is still very solid in March.
Why would anyone in their right mind volunteer to spend a month to a month in a half in temperatures that usually don’t exceed -10 degrees Fahrenheit or -23 degrees Celsius? In the case of the roughly two dozen souls who work either for the British, Canadian and United States Navy or the Arctic Physics Laboratory Ice Station, it is because there is work to be done.
from Tales from the Trail:
Amidst the shivering in Washington, the case for global warming
OK, it's cold in Washington. It's really cold. And snowy. And blizzardy. It's hard to recall that long-ago moment -- what was it, six days ago? -- when you could go for a walk without cross-country skis and a flask of brandy. But just because it's winter doesn't mean global warming is a myth.
But the storms gave conservatives fresh fodder for mocking former Vice President Al Gore and his efforts on global climate change. Senator Jim DeMint tweeted "It's going to keep snowing in DC until Al Gore cries 'uncle'," Politico reported.
Fishing for information
The research vessel Professor Khromov is just a few kms off the easternmost point of Siberia, and U.S. technologist Kevin Taylor is struggling to reel in an orange buoy that had been deep beneath the Bering Strait for nearly a year.
The first time he tries, the ship veers too far away from the prize and must make a slow, wide turn for another pass. The second time, Taylor’s hook is not quite ready and the float bobs again into the Khromov’s wake. This takes practice, even in calm waters.
