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Posts by Dr. Crystal A. Kolden

I often note that CA seismic codes are required everywhere, even far from fault lines, and argue we should do the same for wildfire. Even though this was only a small shake here in Fresno, I felt it 175 miles away. Hazards travel and have far-reaching effects!

1 week ago 5 0 1 0

Yes!! I felt it here in Fresno, too. @climate-guy.bsky.social didn't believe me for a minute.

1 week ago 5 0 1 0

They think that cutting down all the trees will remove the problem. I can't even wrap my head around how catastrophic this is going to be.

1 week ago 4 0 1 0

As a fire scientist, I am devastated for my many good friends and colleagues who will be affected by the mass closure of so many research stations and offices. Many will leave the agency.

USFS has pioneered so much foundational fire science. The consequences of this will be catastrophic.

1 week ago 341 130 9 10

The presser was to confuse everyone and bury the announcement about dismantling the US Forest Service.

"the Forest Service will begin transitioning to a state-based organizational model..." HQ in Utah. The state that sued for state control over Public Lands.

www.usda.gov/about-usda/n...

2 weeks ago 32 15 2 3

You're doing good work here, loved this episode. I am not ashamed to admit how obsessed I am with this show and how incredible it is.

2 months ago 3 0 1 0

That score should qualify him for the free!!!

2 months ago 0 0 0 0

Okay, while I love the costuming, this definitely is not me.

2 months ago 0 0 0 0

When I was in my 20s and spent thousands of hours driving all over the country, I had ample time to listen to a LOT of music. Todd Snider was a poet of a songwriter whose lyrics and rambling stories between songs made the miles go by quickly. One of my favorites. RIP.

5 months ago 11 3 0 0
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So sad. I never made it to a show, but his albums are regularly played in my car to this day. I think my kids started singing along with Beer Run by the time they were 3 or 4.

5 months ago 2 0 0 0

Email me at ckolden@ucmerced.edu

6 months ago 1 0 1 0
Wildfire Disasters Surged in the Past 10 Years, Study Shows | Newsroom

It doesn't just *feel* like wildfires are becoming more catastrophic, they actually are. Led by @calxcunningham.bsky.social at Univ of Tasmania, this is a paper we started nearly 10 years ago, now in @science.org. Press release from @ucmerced.bsky.social here: news.ucmerced.edu/news/2025/wi...

6 months ago 18 2 1 0
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Climate-linked escalation of societally disastrous wildfires Climate change and land mismanagement are creating increasingly fire-prone built and natural environments. However, despite worsening fire seasons, evidence is lacking globally for trends in socially ...

Published today: our new paper showing a 44-year trend of increasing global wildfire disasters (fatalities and economic losses) due to climate change-induced extreme weather. www.science.org/doi/10.1126/...

6 months ago 406 210 8 12
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Trump is trying to kill solar power—here's how to fight back Rooftop solar is a clean power miracle. Why are we killing it with red tape?

We have a 5.9kW solar system for 2,700 sq ft house in HOT 🥵 Fresno, CA. We charge a plug-in hybrid daily.

Current house: $24/yr for electricity (PG&E)
Old house (no solar): >$6,000/yr

Our $20K system is paid for in ~3 yrs. Solar is a scientific miracle.

www.motherjones.com/environment/...

8 months ago 24 12 4 0
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Climate Change Is Making Fire Weather Worse for World’s Forests

It's 2025, and it's still climate change driving major forest loss through wildfires. With insights from @climate-guy.bsky.social and @calxcunningham.bsky.social

@ucmerced.bsky.social @utas.edu.au

www.nytimes.com/2025/07/21/c...

8 months ago 10 4 0 0

Most of the homes within the fire footprint burned, so it's logical that most of the homes for sale would be outside the footprint. We see this consistently across fire disasters: people sell and leave. They want to move on with their lives. We're prepping a final report on this right now for HUD.

8 months ago 4 0 1 0
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Journal of Pyrogeography | ScienceDirect.com by Elsevier Read the latest articles of Journal of Pyrogeography at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature

I've been calling myself a pyrogeographer for over two decades, and now we have a journal just for us, led by the fantastic @mattwjones.bsky.social (full disclosure: I sit on the editorial board). We warmly invite you to submit to #Pyrogeography today!
www.sciencedirect.com/journal/jour...

8 months ago 12 0 0 0
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Climate change has increased the odds of extreme regional forest fire years globally Nature Communications - The authors show that extreme fire years in global forests align with rare fire weather extremes. Climate change has made such extremes 88-152% more probable. These findings...

Happy to share our new paper: we show that human-caused climate change is raising the odds of extreme climate-driven fire years across forested regions of the globe
@climate-guy.bsky.social @pyrogeog.bsky.social
rdcu.be/evJkX
#ClimateChange #Wildfires

9 months ago 54 32 1 1

Also, if you're not following @mattwjones.bsky.social please give him a follow.

He's the Editor-In-Chief of the new journal Pyrogeography!

9 months ago 5 0 0 0

More amazing teamwork led by the fantastic @mattwjones.bsky.social to develop a global database of prescribed fire.

9 months ago 7 0 0 1

Praying to the Flying Spaghetti Monster over here...

9 months ago 2 0 0 0

gwern.net/doc/history/...

10 months ago 2 0 1 0

My theory: some DOGE minion Googled "Hatch Act" and saw the 1939 law preventing political actions by govt employees and said "Let's cut it!"

Not realizing, of course, that the 1887 Hatch Act funds agricultural research at Land Grant schools that directly benefits farmers.🙄

10 months ago 7 1 1 0

Spent a delightful week in Vienna last month for EGU. What a model for people (not car)-oriented living!
1) Huge car-free areas in the historic city center
2) Amazing public transit system (my 10-yr olds LOVED the subway)
3) Phenomenal bike paths

Rating: 14/10 - I would live there!
#waroncars

10 months ago 9 0 0 0
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Wildfires are coming... for New Jersey? Climate change is expanding the list of areas at risk for the worst wildfires.

feels like a good day to re-up this reporting. “Every single state in the US where we have vegetation, and particularly where we have vegetation intermixing with communities, we have the potential for extreme fire disasters,” @pyrogeog.bsky.social www.vox.com/climate/2386...

11 months ago 22 7 0 0
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Thanks for taking pictures, Asmeret

1 year ago 2 0 0 0

TOMORROW! There's still time to register:
1pm - Introductions and talk by John Mills of @watchduty.org
2pm - A look ahead at the 2025 Fire Season in CA with @climate-guy.bsky.social
2:15pm - Mitigating smoke with Dr. Sandie Ha
2:30pm - Q&A with all speakers

MEDIA is welcome.
Please join us!

1 year ago 14 4 0 1

Climate change continued to have unpredictable impacts on wildfire in 2024. Unexpected shifts, like the Americas producing 40% of C emissions (normally it's <25%), and anomalous events, like the fatal Feb '24 Chile fire or the Pantanal wetlands burning, occur more often.

1 year ago 9 6 0 0
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Wildfires in 2024 - Nature Reviews Earth & Environment Wildfire burned area was 367 Mha in 2024, ranked 17th since 2001. An estimated 1,965 Tg C was released from these fires, 41% of which came from the Americas, far exceeding their usual 25% contribution...

Kolden et al. document 2024 wildfires, finding:

- 367 Mha burned
- Burned area decreased 5.4% from 2023
- Fires released an estimate 1965 Tg C

www.nature.com/articles/s43... (rdcu.be/ehnTP)

@pyrogeog.bsky.social @climate-guy.bsky.social @mattwjones.bsky.social @ueaenv.bsky.social

[6/n]

1 year ago 2 2 1 1
Flyer header that shows a photo of John Mills and states the date and time as April 17, 2025 from 1-3 pm for the 2025 Wildfire outlook.

Flyer header that shows a photo of John Mills and states the date and time as April 17, 2025 from 1-3 pm for the 2025 Wildfire outlook.

QR code to register for the zoom seminar and get full schedule.

QR code to register for the zoom seminar and get full schedule.

On 4/17 @ucmerced.bsky.social Fire Resilience Center will host John Mills, CEO and co-founder of @watchduty.org AND have discussion with @climate-guy.bsky.social and Dr. Sandie Ha on:
1) The upcoming fire season in CA
2) How you can prepare, esp. for smoke

We're streaming it online - join us!

1 year ago 8 6 0 1