[rockdoc123]

Good points, jed and az. My advice is to ignore the troll.

sure ignore the actual published data. Faced with data that disagrees with your theory.....well just ignore it and assume your theory is sound, heck it doesn't have to be proven. Pretty much like a religion and not science I'm afraid.

[Plantagenet]

New study shows that Climate Change over the last 50 years has resulted in a 500% increase in wildfire size in California

climate-change-500-percent-increase-california-wildfires

Why are summertime forest fires so much more likely? Because climate change has already redefined the seasons in Northern California. Since the early 1970s, summers in Northern California have warmed by about 2.5 degrees Fahrenheit (1.8 degrees Celsius) on average. A few degrees may not sound like much, but heat has an exponential relationship with forest fire.

“Each degree of warming causes way more fire than the previous degree of warming did. And that’s a really big deal,” Park Williams, a climate scientist at Columbia University and an author of the paper, told me. Every additional increment in heat in the environment speeds up evaporation, dries out soil, and parches trees and vegetation, turning them into ready fuel for a blaze. For that reason, Williams said, hot summers essentially overpower anything else happening in Northern California.

Cheers!

[rockdoc123]

New study shows that Climate Change over the last 50 years has resulted in a 500% increase in wildfire size in California

linking to this news item twice in the same thread somehow is supposed to make it more relevant or correct?

and by the way the actual published article, not the news clip you linked to states:

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.

which is exactly what I said above. Climate change can impact the moisture content in forest floor fuel and dead trees. However if there is no fuel there to begin with then the impact is of little consequence. Which is precisely why Dr Mass has pointed out the issue with increased fuel which of course is due to less small fires taking care of it slowing. A build up of fuel can cause a climax fire regardless of how dried out it is (assuming it isn't completely saturated with rainwater). Not everything is controlled by climate change although I know some here would like to believe that.

[jedrider]

Recent destructive California wildfires have been as much wind-driven as fuel-driven. The South gets the Santa Anna Winds, but we don't have a name for the winds up North, because they didn't use to be as common (my own datum point from observation, however).

[jedrider]

Well, they're called the Diablo Winds, which now I believe I know why the Spanish were so prescient.

More info:

California's Spreading Wildfires: What Are Katabatic Winds?
https://www.livescience.com/60677-what-are-katabatic-winds.html

Perhaps just as dangerous is katabatic winds' utter lack of moisture."If the air is dry to begin with, its humidity gets ridiculously low when the winds sweep in," Belongie said. "We're talking single-digit-percentage low — and that has a very drying effect on the fuels." Without the ability to regain their moisture, ground fuels burn as the fires continue to spread, she added.

[dohboi]

Coastal Forest fire risk rising:

https://thetyee.ca/News/2019/07/15/Incr ... l-Forests/
and around the world as well:

https://thinkprogress.org/climate-chang ... 12958a05a/


while Maui burns:

https://www.reuters.com/article/us-hawa ... SKCN1U70RN

California wildfires 500 percent larger because of AGW:

https://www.theatlantic.com/science/arc ... es/594016/

Meanwhile, a good chunk of Siberia seems to be on fire, based on satellite views, forming a kind of swirling smoke-cane. (Sorry, having trouble getting images to copy)

[Azothius]

I do find this image of the arctic surrounded by wildfires to be quite striking:

(July 14th’s record low Arctic sea ice ringed by far northern wildfires and related smoke plumes is just one signal of a rapidly heating global climate. Image source: NASA Worldview.)

https://robertscribbler.com/

What 2019’s Hottest June Ever Recorded Says About the Climate Crisis
Hint — It’s accelerating.

[dohboi]

Thanks, Az.

Now this:

These are some of the biggest fires on the planet, with a few appearing to be larger than 100,000 hectares (380 square miles)," Smith said.

"The amount of CO2 (carbon dioxide) emitted from Arctic Circle fires in June 2019 is larger than all of the CO2 released from Arctic Circle fires in the same month from 2010 through to 2018 put together.

https://www.usatoday.com/story/news/wea ... 793530001/

[dohboi]

A number of experts have pointed out that the pattern of slow, spreading fires in Siberia and Alaska suggest that these are not just 'forest fires,' but that the underlying peat soil has caught fire and will burn, perhaps even through the winter. (Sorry, they were twitter posts that I saw on another forum, but I don't have twitter, so can't share, as far as I know. The twitter posts are by Dr. Thomas Smith and Mark Parrington, among others.)

Here's a link to the relevant thread at asif: https://forum.arctic-sea-ice.net/index. ... #msg216150

[Azothius]

Smoke Covers Much of Siberia
https://arctic-news.blogspot.com/2019/0 ... beria.html


So Much of the Arctic Is on Fire, You Can See It From Space
https://www.livescience.com/66022-wildf ... rctic.html

Since June, more than 100 wildfires have raged across the Arctic, which is especially dry and hot this summer. In Russia alone, wildfires are burning in 11 of the country's 49 regions, meaning that even in fire-free areas, people are choking on smoke that is blowing across the country.

Wildfires are also burning in Greenland and parts of Alaska, following what was the hottest June in recorded history. It's common for fires to burn during the Arctic's summer months, but the number and extent this year are "unusual and unprecedented," Mark Parrington, a senior scientist at the Copernicus Atmosphere Monitoring Service (CAMS), a part of the European Union's Earth observation program, told CNN.

Many of this summer's fires are burning farther north than usual, and some appear to be burning in peat soils, rather than in forests, Thomas Smith, an assistant professor of environmental geography at the London School of Economics, told USA Today. This is a dangerous situation, because whereas forests might typically burn for a few hours, peat soils can blaze for days or even months, Smith said.

Moreover, peat soils are known carbon reservoirs. As they burn, they release carbon, "which will further exacerbate greenhouse warming, leading to more fires," Smith said.

[dohboi]

https://www.dw.com/en/russia-declares-e ... a-49817454

Russia declares emergency over huge wildfires in Siberia

Raging wildfires have swallowed up an area bigger that the state of Belgium across Siberia, with smoke enveloping cities. Observers and activists slammed the Russian government for not responding earlier.


An area of 3.2 million hectares (7.9 million acres) was engulfed by forest fires in remote regions of Russia on Monday. In comparison, the total surface of the nation of Belgium is 3.07 million hectares.
With fires raging for days, immense clouds of smoke reached large population centers, including Russia's third biggest city, Novosibirsk. Authorities declared emergencies in several regions.
"The smoke is horrible," pensioner Raisa Brovkina told state television after being hospitalized in Novosibirsk.

[dohboi]

more on wildfires, heatwaves, and connections to gw:
https://www.businessinsider.sg/summer-h ... ge-2019-7/

[EdwinSm]

More on Russian fires

https://www.bbc.com/news/world-europe-49182554

[dohboi]

Thanks for that amazing map

[dohboi]

Not only are Arctic wildfires currently burning out of control, but so are Indonesian wildfires, as discussed by the linked article:

"Indonesia sends thousands of security personnel to combat forest fires"

http://news.trust.org/item/20190731104341-l37a1/

"Fires Indonesian farmers use to clear land during the dry season can rage out of control, bringing a choking haze that can affect neighbours such as Singapore and Malaysia.

Drought has hit large parts of the archipelago as a mild El Nino weather pattern disrupts the dry season, weather officials say, with its peak now expected to run from mid-August to mid-September.

The number of hot spots has been increasing, with 124 intense enough to suggest fires detected nationwide by Wednesday morning, said Agus Wibowo, a spokesman for the National Disaster Mitigation Agency."

[dohboi]

Siberian wildfires meet ammo depot.

https://www.facebook.com/wedonthavetime ... tion=group

[Newfie]

Sorry if this was already linked.

“This process of injecting soot into the stratosphere and seeing it extend its lifetime by self-lofting, was previously modelled as a consequence of nuclear winter in the case of an all-out war between the United States and Russia, in which smoke from burning cities would change the global climate,” said Alan Robock, distinguished professor of environmental sciences at Rutgers University-New Brunswick, in a statement. “Even a relatively small nuclear war between India and Pakistan could cause climate change unprecedented in recorded human history and global food crises.”

https://news.google.com/articles/CBMidW ... id=CA%3Aen

[Azothius]

Arctic wildfires spew soot and smoke cloud bigger than EU

https://www.theguardian.com/world/2019/ ... moke-cloud

A cloud of smoke and soot bigger than the European Union is billowing across Siberia as wildfires in the Arctic Circle rage into an unprecedented third month.

A spate of huge fires in northern Russia, Alaska, Greenland and Canada discharged 50 megatonnes of CO2 in June and 79 megatonnes in July, far exceeding the previous record for the Arctic.

The intensity of the blazes continues with 25 megatonnes in the first 11 days of August – extending the duration beyond even the most persistent fires in the 17-year dataset of Europe’s satellite monitoring system.

Mark Parrington, a scientist in the Copernicus Atmosphere Monitoring Service, said the previous record was just a few weeks. “We haven’t seen this before,” he said. “The fire intensity is still well above average.”


“Carbon emissions from these wildfires could exacerbate climate warming for decades to come,” she wrote in a blogpost. “Alaska’s ecosystems store huge quantities of carbon both as permafrost and soil that has accumulated over millennia. Wildfires destabilise these stores of carbon by combusting soil and accelerating permafrost thaw, both of which release heat-trapping gases to the atmosphere.”

Siberian Wildfires Set To Break Land Area Record

https://www.rferl.org/a/siberian-wildfi ... 06388.html

Russia is on track to have a record year in terms of the area covered by wildfires, the local branch of environmental group Greenpeace said on August 12.

Nearly 5.5 million hectares are ablaze, mostly in Siberia, with smoke clouds covering more than 5 million square kilometers, more than the size of the European Union, the UN’s authoritative World Meteorological Organization said in a tweet on August 11.

[dohboi]

Second out of control wildfire in Gran Canaria this year.

https://elpais.com/elpais/2019/08/19/in ... autoplay=0

[dohboi]

Sao Paulo day darkened to night by smoke from Amazon fires

https://www.buzzfeednews.com/article/sk ... KF8LGvFq44