I don't know if anything about the current fires has made it through peer review (which normally takes months rather than weeks), but there's plenty of evidence for increased fieriness from climate change, e.g. this paper from last month:
Climate change is increasing the likelihood of extreme autumn wildfire conditions across California
California has experienced devastating autumn wildfires in recent years. These autumn wildfires have coincided with extreme fire weather conditions during periods of strong offshore winds coincident with unusually dry vegetation enabled by anomalously warm conditions and late onset of autumn precipitation. In this study, we quantify observed changes in the occurrence and magnitude of meteorological factors that enable extreme autumn wildfires in California, and use climate model simulations to ascertain whether these changes are attributable to human-caused climate change. We show that state-wide increases in autumn temperature (~1 °C) and decreases in autumn precipitation (~30%) over the past four decades have contributed to increases in aggregate fire weather indices (+20%). As a result, the observed frequency of autumn days with extreme (95th percentile) fire weather—which we show are preferentially associated with extreme autumn wildfires—has more than doubled in California since the early 1980s. We further find an increase in the climate model-estimated probability of these extreme autumn conditions since ~1950, including a long-term trend toward increased same-season co-occurrence of extreme fire weather conditions in northern and southern California. Our climate model analyses suggest that continued climate change will further amplify the number of days with extreme fire weather by the end of this century, though a pathway consistent with the UN Paris commitments would substantially curb that increase. Given the acute societal impacts of extreme autumn wildfires in recent years, our findings have critical relevance for ongoing efforts to manage wildfire risks in California and other regions.
Or this one from last year: Observed Impacts of Anthropogenic Climate Change on Wildfire in California
Recent fire seasons have fueled intense speculation regarding the effect of anthropogenic climate change on wildfire in western North America and especially in California. During 1972–2018, California experienced a fivefold increase in annual burned area, mainly due to more than an eightfold increase in summer forest‐fire extent. Increased summer forest‐fire area very likely occurred due to increased atmospheric aridity caused by warming. Since the early 1970s, warm‐season days warmed by approximately 1.4 °C as part of a centennial warming trend, significantly increasing the atmospheric vapor pressure deficit (VPD). These trends are consistent with anthropogenic trends simulated by climate models. The response of summer forest‐fire area to VPD is exponential, meaning that warming has grown increasingly impactful. Robust interannual relationships between VPD and summer forest‐fire area strongly suggest that nearly all of the increase in summer forest‐fire area during 1972–2018 was driven by increased VPD. Climate change effects on summer wildfire were less evident in nonforested lands. In fall, wind events and delayed onset of winter precipitation are the dominant promoters of wildfire. While these variables did not change much over the past century, background warming and consequent fuel drying is increasingly enhancing the potential for large fall wildfires. Among the many processes important to California's diverse fire regimes, warming‐driven fuel drying is the clearest link between anthropogenic climate change and increased California wildfire activity to date.
There are also plenty of people much better qualified than me all saying that these fires are climate-related, for example:
The racing flames show how climate change is affecting the nation's most populous state, experts said. Hotter temperatures, less dependable precipitation and snowpack that melts sooner lead to drier soil and parched vegetation. Climate change also affects how much moisture is in the air, [UCLA climate scientist Daniel] Swain said.
"It's actually drying out the air during these extreme heat events," which zaps plants of additional moisture, Swain said. That left much of the state a tinderbox when hundreds of lightning strikes scorched the countryside last week.
Swain with UCLA and other scientists earlier this year published a study that said climate change has doubled the number of extreme-risk days for California wildfires.
It said temperatures statewide rose 1.8 degrees Fahrenheit since 1980, while precipitation dropped 30%. That doubled the number of autumn days that offer extreme conditions for the ignition of wildfires (Climatewire, April 3).
The heat is expected to get worse with time. Climate models estimate that average state temperatures will climb 3 degrees Fahrenheit by 2050 unless the world makes sharp cuts in greenhouse gas emissions, said Michael Wehner, a senior scientist at Lawrence Berkeley National Laboratory.
Even with emissions cuts, average temperatures would rise 2 degrees by midcentury, he said.
From https://www.scientificamerican.com/arti ... te-change/
“What we’ve been seeing in California are some of the clearest events where we can say this is climate change — that climate change has clearly made this worse,” said Zeke Hausfather, a climate scientist at the Breakthrough Institute, an Oakland-based think tank. “People who have lived in California for 30, 40 years are saying this is unprecedented, it has never been this hot, it has never been this smoky in all the years I’ve lived here.”
Global warming has increased the odds of unprecedented heat extremes across more than 80% of the planet and “has doubled or even, in some areas, tripled the odds of record-setting hot events” in California and the Western U.S., said Stanford University climate scientist Noah Diffenbaugh<.….>
Research by Diffenbaugh and colleagues that was published last month found that the number of days with extreme wildfire weather in California has more than doubled since the early 1980s, primarily due to warming temperatures drying out vegetation.
And it’s that atmospheric warming that has set the stage for the fires raging throughout the western U.S., said Park Williams, a hydroclimatologist at Columbia University’s Lamont-Doherty Earth Observatory.
“If we think of the atmosphere as a giant sponge that’s always trying to extract water from the landscape, then temperature increases the sponginess,” he said.
As soils become drier, heat waves become more intense. That’s because the energy in the atmosphere is no longer being used in evaporation but is just building up heat. And as heat increases and soils — and, therefore, fuel for fires — dry out, the risk grows, laying the foundation for the type of wild and destructive fires we are now observing.
“That’s why, I think, you keep reading quotes from these firefighters who say they are seeing fire behavior unlike anything they’ve seen before,” he said. “As we go out in the future, in a world with this exponentially growing risk … we’re going to see fires far different than we’ve seen before.”
From https://www.latimes.com/california/stor ... west-coast
David Romps, director of the Berkeley Atmospheric Sciences Center, said in an email that we’re living in a fundamentally climate-altered world. He noted that average daily highs for this time of year are now about 3˚ or 4˚ F warmer in Berkeley, California, than at the beginning of the 20th century. He was also the lead author of a 2014 Science paper finding that every additional 1 ˚C (1.8 ˚F) of warming could increase lightning strikes over the US by about 12%.
“To cut to the chase: Were the heat wave and the lightning strikes and the dryness of the vegetation affected by global warming? Absolutely yes,” Romps said. “Were they made significantly hotter, more numerous, and drier because of global warming? Yes, likely yes, and yes.”
https://www.technologyreview.com/2020/0 ... heatwaves/
Friederike Otto, acting director of the University of Oxford’s Environmental Change Institute and co-lead of World Weather Attribution, echoed that view in an email: “There is absolutely no doubt that the extremely high temperatures are higher than they would have been without human-induced climate change. A huge body of attribution literature demonstrates now that climate change is an absolute game-changer when it comes to heat waves, and California won’t be the exception.”
https://www.nytimes.com/2020/09/09/clim ... fires.html
For these climate scientists, and, increasingly, for all of us, their discipline is anything but academic. The links between climate change and some extreme weather phenomena can be hard to distinguish from natural weather variability without extensive attribution analysis, but the links between wildfires and a warming planet, especially in California are “straightforward,” said Park Williams, a bioclimatologist at Columbia University’s Lamont-Doherty Earth Observatory. “Warmer temperatures dry the fuels, and all you need from there is a spark.”