From deadly floods in Louisiana to an “explosive” wildfire in California, the impacts of the climate change are being felt across the United States this week.
Neither extreme weather event can be exclusively blamed on global warming. But record-breaking heat, warmer oceans, and drier brush—all linked to man-made climate change—are certainly contributing factors.
“Climate change is never going to announce itself by name. But this is what we should expect it to look like,” declared Jonah Engel Bromwich at the New York Times, referring to the flooding in southern Louisiana, which has been called the worst natural disaster to strike the U.S. since Superstorm Sandy.
In fact, current analyses suggest that—as was the case in 2012—greenhouse gas emissions and resultant climate change at the very least increased the severity of the storm that brought on the flooding.
InsideClimate News reported Wednesday:
Of the two factors that made Louisiana’s storm so devastating, one (increased moisture in the air) wears the fingerprints of man-made climate change from mostly fossil-fuel burning, while the other (how slowly the storm was moving) is not so easily explained.
“This storm is a good example of why we care about a changing climate,” said Katharine Hayhoe, a climate scientist at Texas Tech University, “because Louisiana is a place that is already at risk of flooding and climate change is taking the risk that we already face, and it’s exacerbating” the threat.
[…] “With such a warm year, you’re going to see much higher-than-average sea surface temperatures,” Hayhoe said. Those water temperatures, in this case the Gulf of Mexico where the storm system formed on Aug. 7, mean the air above it has more than its usual share of water vapor, Hayhoe explained.
Added Weather Underground’s Bob Henson and Jeff Masters in a blog post on Monday:
The storm system carried near-record amounts of atmospheric moisture, drawn from the Gulf of Mexico and northwest Atlantic, where sea-surface temperatures are well above average. Climate change has already been shown to increase the amounts of rain falling in the most intense events across many parts of the world, and extreme rainfall events like this week’s Louisiana storm are expected to grow increasingly common in the coming years.
Indeed, wrote Gulf Coast mother and activist Cherri Foytlin on Thursday, “This type of storm is far from normal—but it could become normal if we don’t act now.”
“Across the region, tens of thousands of people have been evacuated, thousands of homes damaged, and at at least eleven people killed,” wrote Foylin, who serves as state director of climate action group Bold Louisiana. “This fills my heart with both a deep sadness and deep anger—at the fossil fuel companies driving this ongoing crisis, and at an [Obama] administration that continues to sell them the right to do so.”
As evidence, Foytlin pointed to the looming auction of “an area the size of Virginia for offshore drilling in the Gulf of Mexico”—and called for President Barack Obama to call off the auction “and stop treating the Gulf Coast like a sacrifice zone.”
Meanwhile, on the West Coast, the Blue Cut fire now covers close to 50 square miles, threatening more than 34,000 structures and forcing the evacuation of more than 82,500 people.
California Gov. Jerry Brown has declared a state of emergency for the fast-moving wildfire, which was only 4 percent contained as of early Thursday morning.