"Spotting is an influential form of wildfire spread whereby firebrands (i.e. burning pieces of vegetation or other combustible materials) are blown into unburnt fuels and ignite separate new ‘spot fire'"
Storey et al. 2020
publish.csiro.au/WF/pdf/WF19124
Albini, F. A. (1983). Potential spotting distance from wind-driven surface fires (Vol. 309). US Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station.
frames.gov/documents/beha… Image
This is an incredibly interesting paper:

Pitts, W. M. (1991). Wind effects on fires. Progress in Energy and Combustion Science, 17(2), 83-134.
doi.org/10.1016/0360-1… Image
Radeloff, Volker C., et al. "Rapid growth of the US wildland-urban interface raises wildfire risk." Proceedings of the National Academy of Sciences 115.13 (2018): 3314-3319.
doi.org/10.1073/pnas.1…
Population

Superior, CO
1990= 276
2019= 13,077

Louisville, CO
1990= 12,543
2019= 20,816

What has been role of population growth in changing fire risk? cf. Radeloff et al. 2018
Pielke, R. A., & Sarewitz, D. (2005). Bringing society back into the climate debate. Population and environment, 26(3), 255-268.
link.springer.com/article/10.100… Image
Over past few days I have dived deeply into the academic literature on fires (urban, grassland, WUI, etc) & am again amazed by the scope and depth of expertise available - rich, nuanced, thoughtful, complex

I cannot help but be reminded of Sarewitz 2014
slate.com/technology/201… Image
⬇️
"climate change may well exacerbate a range of serious & potentially even disastrous problems—it’s that the monomaniacal, apocalyptic version of climate change gives us a picture of the world that is so incomplete that it’s much worse than simply wrong"
slate.com/technology/201… Image
Zhuang, Yizhou, et al. "Quantifying contributions of natural variability and anthropogenic forcings on increased fire weather risk over the western United States." Proceedings of the National Academy of Sciences 118.45 (2021).
doi.org/10.1073/pnas.2…
Australia is way out ahead on the US on fire policy

O’Neill, S. J., & Handmer, J. (2012). Responding to bushfire risk: the need for transformative adaptation. Environmental Research Letters, 7(1), 014018.
iopscience.iop.org/article/10.108… Image
Hammer, R. B., Stewart, S. I., & Radeloff, V. C. (2009). Demographic trends, the wildland–urban interface, and wildfire management. Society and Natural Resources, 22(8), 777-782.
doi.org/10.1080/089419… Image

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More from @RogerPielkeJr

6 Jan
Evidence for +ive ROI for university investment in football incredibly thin

Take Colorado

Last year, 50k applicants (enrolled about 6k freshmen). Need more? No

State law limits out-of-$tate enrollment, near the cap. Need more? No

Colorado already "invests" ~$12m in athletics
Lots of things a university like Colorado might do with an extra $10m

Boosting the salary of a strength coach is not gonna be very high on that list

In the absence of finding some extra $, transferring existing funds from elsewhere on campus to football is utterly ridiculous
Alabama is cited by @wilnerhotline as an example of a school that benefitted by spending money on football, citing hiring of Nick Saban in 2007

Some data from US News college rankings
'Bama vs CU

Alabama 2008= 91st
Alabama 2022= 148th

Colorado 2007= 79th
Colorado 2022= 99th
Read 6 tweets
5 Jan
I'm see frequent claims by scientists that Colorado Marshall fire can be attributed to human-caused climate change but little data/analysis

I'm looking at actual data to try to understand such claims

Here is Dec precip in Boulder 1893 to 2021
No long-term trend, increase >1990
Grasses, such as those of the Marshall Mesa open space are what are called "one hour fuels" meaning that "Fuel moisture in these fuels can change within one hour according to factors such as temperature, rain, humidity and shade"
noble.org/news/publicati…
To attribute fire in Boulder to human-caused climate change requires
(a) establishing trend in conditions of "one-hour fuels" leading to greater flammability on climate time scales (>30yrs)
(b) attributing that trend to human-caused CC

I've seen neither (but welcome pointers)
Read 9 tweets
23 Dec 21
And here are my 5 least read columns of 2021

5⃣Science Diplomacy and The Pandemic Treaty
Here are five important science-related issues to include in any future global pandemic treaty
rogerpielkejr.substack.com/p/science-dipl…
4⃣The Covid Vaccine and Learning to Love the Technological Fix
Our best hope for moving beyond the pandemic is vaccination, but not all problems can be addressed through technology
rogerpielkejr.substack.com/p/the-covid-va…
3⃣Emerging Secrets of the Coronavirus Task Force
A Look at Remarkable Interviews with Deborah Birx and Anthony Fauci
rogerpielkejr.substack.com/p/emerging-sec…
Read 5 tweets
23 Dec 21
Here are my five most read columns of 2021

5⃣ A Remarkable Decline in Landfalling Hurricanes
Since 1945, the number of hurricanes that make landfall has declined by about a third
rogerpielkejr.substack.com/p/a-remarkable…
4⃣The Global Population Crisis that Never Was
Apocalyptic visions of over-population have always been grounded more in politics than science
rogerpielkejr.substack.com/p/the-global-p…
3⃣How to Understand the New IPCC Report: Part 2, Extreme Events
Contrary to what you've been reading, the massive new IPCC report offers grounds for optimism on climate science and policy
rogerpielkejr.substack.com/p/how-to-under…
Read 5 tweets
21 Dec 21
This would be a massive science integrity scandal under a R administration

Sitting White House official edits a paper for PNAS
Paper is used by that official to advocate policy b4 Congress
Paper later retracted due to errors & COI (was written by her mates & bro in law)

Wow
Read 6 tweets
21 Dec 21
🧵On net-zero emissions
Let's talk about the 🐘 in the room

The very thorough paper linked below on net-zero emissions is missing some important words: coal, natural gas, petroleum

So too is much of climate policy

Net-zero emissions means near-zero fossil fuels
CO2 emissions are an output from the burning of fossil fuels

To achieve net-zero CO2 requires that the burning of fossil fuels goes to near-zero (I say near because there might be some CDR possibilities)

Emissions are one step away from what we really need to focus on
Climate policy (focused on CO2) cannot succeed until it encompasses targets and timetables for the phase-out of coal, natural gas and petroleum

Period

rogerpielkejr.substack.com/p/a-coal-exit-…
Read 5 tweets

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