US President Donald Trump, who flew into Sacramento in central California on the third day of a reelection campaign swing, pushed back against state leaders who said climate change underlies ever-stronger wildfires in the region

McClellan Park (United States) (AFP) - President Donald Trump on Monday suggested global warming will reverse itself and dismissed climate change as a cause of ferocious fires engulfing swaths of the US West, during a briefing in California on the deadly blazes.

Trump, who flew into Sacramento on the third day of a reelection campaign swing, pushed back against state officials arguing that a heating climate underlies the ever-stronger blazes, which have killed at least 35 people since the start of summer.

“It will start getting cooler. You just watch,” Trump said.

“I wish science agreed with you,” responded Wade Crowfoot, the head of the California Natural Resources Agency.

The Oak Park Motel's melted sign was destroyed in the Beachie Creek Fire in Gates, Oregon

Trump on his arrival also repeated his argument that the wildfires are due instead to insufficient maintenance of forest areas to make them less combustible.

“There has to be strong forest management,” he said.

“With regard to the forests, when trees fall down after a short period of time, about 18 months, they become very dry. They become really like a match stick,” he added. “They just explode.”

Minutes earlier, Democratic challenger Joe Biden assailed Trump as a “climate arsonist” whose reelection would be catastrophic for the environment.

“If you give a climate arsonist four more years in the White House, why would anyone be surprised if we have more of America ablaze?” Biden said, savaging Trump for failing to “take responsibility” for the ongoing wildfire crisis.

“We need a president who respects science, who understands that the damage from climate change is already here,” Biden added.

Climate change amplifies droughts, which dry out regions, creating ideal conditions for wildfires to spread out-of-control and inflict unprecedented damage.

A sign in front of a tent along the highway near Salem, Oregon on September 13, 2020 reads "Lost Everything Due To House Fire"

The blazes across California, Oregon and Washington state have burned nearly five million acres (two million hectares), torching an area roughly the size of the state of New Jersey, with fears the death toll may rise.

The president’s visit to California was to last only a few hours, before he returns to the campaign trail in Arizona.

California Governor Gavin Newsom, who has argued that the fires are driven mostly by global warming, acknowledged as he met with Trump that better forest management was needed.

But he said the overwhelming cause of the problem is far bigger.

“The hots are getting hotter, the dries are getting drier,” he said. “We submit the science is in and observed evidence is self-evident: that climate change is real and that is exacerbating this.”

Democratic vice presidential candidate Kamala Harris is also set to tour the damage Tuesday. She has tweeted that Trump has “denied evidence” the fires were “intensified by the climate crisis.”

Of at least 35 people killed by the blazes since the beginning of summer, 27 died last week alone.

Trump has made little comment about the massive blazes in recent weeks, drawing loud criticism for not acknowledging the crisis.

- ‘Apocalyptic’ -

Much of the West Coast remained coated in dense smog on Monday, with Portland the world’s most air-polluted city according to IQAir.

“It’s apocalyptic,” Washington state Governor Jay Inslee told ABC’s “This Week.”

“It’s maddening right now we have this cosmic challenge to our communities, the entire West Coast of the United States on fire, to have a president to deny that these are not just wildfires, these are climate fires,” he said.

Most of the fatalities have occurred in California and Oregon.

The Bobcat Fire burns on a hillsides behind homes in Arcadia, California on September 13, 2020

More than 30,000 firefighters are battling the blazes, with officials warning that improved weather could end Monday as windier conditions return.

Residents of Arcadia, on the outskirts of Los Angeles, were ordered to evacuate Sunday as the nearby Bobcat Fire spread south through forested terrain toward the metropolis.

Two new deaths were confirmed from the North Complex Fire, which swept at unprecedented speeds this week into areas already ravaged less than two years ago by the Camp Fire – California’s deadliest ever blaze.

“There are still active fires, power lines are down, trees are down, there are roads that are impassable,” said Sheriff Kory Honea, warning evacuees it could take “weeks and weeks” to return to their homes.

Paul Clement described to AFP how he fled his home in Berry Creek.

A barn is shrouded in smoke on September 13, 2020 in Molalla, Oregon, which has been evacuated due to the Riverside Fire

“When I came around the bend, everything was on fire – an entire hillside. So I ended up driving through and you couldn’t see 50 feet (15 meters).”

“It was worse than the Camp Fire, which I didn’t think was possible.”

California alone has seen 3.3 million acres burn – an annual record, with more than three months of the fire season still to come – and over 4,100 structures destroyed.