🧵
Look under the hood & what do you find?
Extreme, implausible scenarios

Climate Change an ‘Emerging Threat’ to U.S. Financial Stability, Regulators Say nytimes.com/2021/12/17/us/…
For some background on the outdated & misleading climate research being used in financial regulation

Read this thread


And my recent FT op-ed
How do we know that climate change threatens financial stability?
Well first, billion-dollar disasters

Yesterday, I discussed some of the many issues with that “dataset”


TL;DR Don’t ever use this “data” to make policy
And of course, lurking in the footnotes, background reports and entrails of scenario & impact methodologies is our old buddy, RCP8.5

Bottom line: Sure climate change may pose important financial risks, but don’t confuse marketing with risk assessment 🤓👍
I mean, what are we supposed to do with this obviously false information (ie, contra data, research, IPCC, common sense, etc.) from the US Treasury Dept on flooding and financial risks?

You just can’t use the billion-dollar disasters to assess trends in weather (or disasters)
The reality is that flood damages in the US have dramatically diminished in their impact on the economy (whether due to policy or climate, likely both)

How the US Dept of Treasury does not know or recognize this is amazing

This says nothing about future risks of course

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Roger Pielke Jr.

Roger Pielke Jr. Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @RogerPielkeJr

18 Dec
This is a really important number & I haven't seen it mentioned anywhere

FEMA estimates that in 2021 we should expect $141B is catastrophe losses in the US, based on current exposure, historical event frequency & loss ratios
The FEMA loss estimation CANNOT be compared to the spectacularly awful NOAA billion dollar losses

For weather losses, FEMA uses data processed by ASU/SHELDUS off of NOAA Storm Data, as below

NOAA Storm Data uses a bespoke special sauce to gin up losses (read on...)
NOAA's billion $ loss database mixes together direct and indirect losses (like business interruption & commodity markets) as well as non-event costs (e.g., "disaster restoration and wildfire restoration")

They also "scale up" insured loss data, which guarantees double counting
Read 10 tweets
18 Dec
2021 focus of attention in climate research
via Google Scholar

1⃣RCP8.5 OR "RCP 8.5"= 5,850
2⃣"natural variability" AND climate= 4,510
3⃣RCP4.5 OR "RCP 4.5"= 4,460
4⃣RCP2.6 OR "RCP 2.6"= 3,120
5⃣RCP6.0 OR "RCP 6.0"= 1,540

More studies of a fiction than of "natural variability"
If you want to know how RCP8.5 came to dominate climate research, start here issues.org/climate-change…
And for the SSP marker scenarios in published studies in 2021

SSP5-8.5= 761
SSP2-4.5= 585
SSP1-2.6= 474
SSP3-7.0= 337

Lessons:
In 2021 RCPs continue to dominate the literature (= ~8x more studies) despite SSPs available & implausible scenarios lead both RCP & SSP studies
Read 9 tweets
17 Dec
🧵
A really good paper by @jessicadjewell et al

Historical precedents and feasibility of rapid coal and gas decline required for the 1.5°C target cell.com/one-earth/full…
Lessons
#1
"The first lesson is that past decline of fossil fuels was driven by technological innovations... while technological advances have been necessary for FF decline, no single technology seems to be poised to deliver the decline required for reaching climate targets"
Lesson #2
"historical precedents of rapid fossil fuel decline almost always involved not only technological advances but also strong state policies"
Read 5 tweets
13 Dec
Articles like this reinforce why actual science is so important & can't be replaced by newspapers (sorry @pbump)
US tornado record has significant known discontinuities (eg, 1950-1973, 1974-1999, 2000-) making simple trend analysis misleading
Discussed: sciencepolicy.colorado.edu/admin/publicat…
Eg, this figure is incredibly misleading

It purports to saying something about tornadoes
What is really says is something complicated about how observational technologies have changed over decades (eg, Doppler Radar 1995) allowing different abilities to detect tornadoes Image
The @washingtonpost utterly ignores the IPCC, whose job it is to sort through complex issues in the literature like observational platform changes over time & impact on detection of events

In process WP completely contradicts IPCC & mainstream scientific literature . . .
Read 6 tweets
9 Dec
Laugh or cry?
New AI tool for climate misinformation

“Ultimately, our goal is the Holy Grail of fact-checking, which is being able to detect and debunk misinformation in real time. Ideally, I would have social media platforms using it to detect misinformation in real time.”
What counts as "climate misinformation"?
Let's have a look

"Denialist keywords include references to
extremes in the past, extremes not
increasing or extremes not linked to
climate change."
More denialist claims

Includes "damages/deaths from extreme weather aren’t increasing"
Includes "extreme weather linked to non-climate change phenomena (like ENSO)"
Read 9 tweets
9 Dec
🧵
Last day of class today
A weird but overall good semester

My big in-person class had COVID-19 positives most weeks & many students missed class due to actual, suspected or feared COVID-19

CU doesn't allow profs to change modality (eg, to remote instruction) even temporarily
My advice to @CUBoulder @CUBoulderENVS is to allow profs to decide if/when a temporary change to remote might better serve students (and faculty)

I know some (>15/75) of my students missed classes that they would not have due to coming down with COVID-19 or fear of exposure
CU policy is masks in classrooms expect instructors >6ft distant from students

This worked fine all semester, absolutely no issues raised by any student🙏

Hopefully it limited spread of COVID-19 from the many positive cases I know we had in the classroom
Read 6 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us on Twitter!

:(