Bränder är ett naturligt inslag, helt rätt.
Men de bränder som nu pågår i Kalifornien är inte naturliga. De är förvärrade av uppvärmningen. Klimatforskarna har varnat för detta i flera år, bl a i IPCC:s rapporter.
I Sydeuropa har man vant sig vid värre bränder sedan några år och i Sverige har vi också haft några. Det har blivit ett mönster: Långvarig värme, torka och kraftigare vindar än normalt gör släckningsarbetet svårare. Bränderna sprider sig snabbare än förut.
Megafires More Frequent Because Of Climate Change And Forest Management
The global average temperature is more than 1 degree Fahrenheit higher than it used to be before the Industrial Revolution. And in a dry climate more heat equals more drying. Meaning: The hot dry air literally sucks the moisture out of the ground and out of vegetation.
"And it doesn't take much," says Jennifer Balch, a fire ecologist at the University of Colorado. "With just a little bit of drying you get a substantial increase in the amount of burning."
In fact, the number of large fires across the Western U.S. has increased five-fold since the 1970s, says Balch.
https://www.npr.org/2018/11/12/666951838/megafires-more-frequent-because-of-climate-change-and-forest-management?t=1542098829188
How does climate change make wildfires worse?
As deadly wildfires threaten thousands in northern and southern California, scientists have identified 10 ways climate change can make wildfires worse.
Deadly wildfires such as those raging in northern and southern California have become more common in the US state and elsewhere in the world in recent years. AFP talked to scientists about the ways in which climate change can make them worse.
Other factors have also fuelled an increase in the frequency and intensity of major fires, including human encroachment on wooded areas, and questionable forest management. "The patient was already sick," in the words of David Bowman, a professor of environmental change biology at the University of Tasmania and a wildfire expert.
"But climate change is the accelerant."
…
Any firefighter can tell you the recipe for "conducive fire weather": hot, dry and windy.
…
"Besides bringing more dry and hot air, climate change - by elevating evaporation rates and drought prevalence - also creates more flammable ecosystems," noted Christopher Williams, director of environmental sciences at Clark University in Massachusetts.
In the last 20 years, California and southern Europe have seen several droughts of a magnitude that used to occur only once a century.
https://www.sbs.com.au/news/how-does-climate-change-make-wildfires-worse
På den här sidan finns
statistik över Kaliforniens bränder sedan 1933:
https://www.bbc.com/news/world-us-canada-46230927
Här är det uppenbart att bränderna har blivit svårare de senaste ca 15 åren.
Varför vill ni förklara bort den här livsfarliga utvecklingen? Är ni för rädda att se sanningen? Är ni fega kräk som gömmer er med skämskudden istället för att reagera med förnuft och engagemang?