Marysville Appeal-Democrat

Trump thinks climate change had no role in California’s fires

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will be confronted with what happened in Paradise in the future.

Wildfires killed nearly 100 people so far this year in California. The majority of those fatalities occurred in the Camp Fire that consumed the city of Paradise in early November. The disaster left little to be recognized, not even teeth or bones to identify victims. Around 200 people are still missing since the flames exploded Nov. 8, the L.A. Times reported Monday, but search teams are finding it nearly impossible to recover remains.

Scientists have been clear that rising temperatur­es and decreasing humidity will lead to more destructiv­e wildfires. Here’s what they know, according to the climate change report released by Trump’s own administra­tion late last week. history. Global temperatur­e has increased nearly 2 degrees Fahrenheit since the industrial era, and human activity, mainly fossil fuel burning, is to blame. The impacts are far-reaching, from things like sea level rise to loss of biodiversi­ty – and more intense wildfires.

A 2016 study found that without climate change, wildfires in the United States would be significan­tly less destructiv­e. Fires have consumed more acreage because of climate change, the study shows. As of 2015, researcher­s estimate that “the area burned by wildfire across the western United States over that period was twice what would have burned had climate change not occurred.” very dry winds, named for the mountain range in Southern California, flow from east to west during fall and winter. As they travel from mountains to ocean they sink, causing air temperatur­e to rise and humidity to plummet. They are a perfect tinderbox for wildfires, and scientists say they are happening more often.

If greenhouse gas emissions continue unrestrict­ed, wildfire frequency in the West could increase 25 percent, and the number of the largest fires – those bigger than approximat­ely 12,000 acres – will triple. Greenhouse gases increase temperatur­es and heat dries out vegetation, even in non-drought years. Dry brush and grass is the main fuel for wildfires, once they ignite.

The people who confront these infernos say the worst wildfires behave differentl­y now than they did in the past, driven across the landscape by extreme Santa Ana winds. For decades, PBS Newshour reported, officials depended on the laws of thermodyna­mics to fight fires: they spread uphill because heat rises, so fight them from downhill.

That principle didn’t hold true this year. Firsthand video of harrowing evacuation­s through burning neighborho­ods suggest that recent fires are spreading faster than people can evacuate. The Camp Fire ignited Nov. 8, around 6 a.m., and by late afternoon Cal Fire reported that it had consumed 8,000 acres. Unable to create downhill perimeters fast enough, officials battling the Carr Fire in July said they turned their attention to helping people outrun it. People fled downhill in the Camp Fire, too, with flames at their heels.

Research shows that climate change is making California’s wildfires worse. If it continues unabated, scientists say, disasters like the Camp Fire will happen again.

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