Ryan Katz-Rosene, PhD Profile picture
Aug 19, 2019 24 tweets 40 min read Read on X
Holy f!&$%# talking on national radio is nerve-wracking...

(especially when your fellow radio guests are climate gurus @KHayhoe and @KenCaldeira!)

Blanked a few times there, but fun discussion nonetheless.

There’s so much more to say about this, so thread coming soon...
@KHayhoe @KenCaldeira OK, in the same vain as my previous thread “Should I cut out meat and dairy for the climate?” (bit.ly/2TJQh2l), it seems like the time is now right for a NEW THREAD:

“Should I stop flying for the climate?”

Here're my 2 cents... BUCKLE UP!
@KHayhoe @KenCaldeira 1/ First, let’s acknowledge (own?) some ‘problems’ with #FlyingLess. As @drvox implies in this long thread, an individual's decision to fly will add an INFINITESSIMALLY SMALL amount of CO2 to the atmosphere (akin to adding a pebble of sand to a beach):

bit.ly/33M5PqK
@KHayhoe @KenCaldeira @drvox 2/ In other words... WE WILL NOT SOLVE THE CLIMATE MITIGATION PUZZLE through individual action. We ultimately need COLLECTIVE-SCALE changes (to business-as-usual capitalism): regulating corporations; pricing incentives; smart investments; good policy!
bit.ly/2PjDLrZ
@KHayhoe @KenCaldeira @drvox 3/ As @MichaelEMann points out in the above article, there’s also a DANGER in placing the onus for change on consumers (instead of CORPORATIONS, decision-makers, etc.)... that's a potential outcome when people become FIXATED on their carbon 'lifestyles'.
@KHayhoe @KenCaldeira @drvox @MichaelEMann 4/ Another problem: Only a small % of the population are responsible for the bulk of aviation emissions. Most people don’t fly, or just once/year. So there’s a danger in coming across as “preachy” to EVERYONE, when in fact it’s (usually) the WEALTHIEST few who are the problem. Image
@KHayhoe @KenCaldeira @drvox @MichaelEMann 5/ Aviation offers tremendous benefits and opportunities which a majority of world hasn't experienced. As @arvindpawan1 has pointed out, there’s a risk that #FlyingLess takes on an IMPERIALIST tone (if it fails to differentiate WHO it’s asking to change).
bit.ly/2MpQtmF
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 6/ And another challenge (in some geographical contexts): There are sometimes NO VIABLE low-carbon alternatives to flying. This is a REAL PROBLEM in Canada, where LONG-DISTANCE train travel is often WORSE than flying on a per-passenger basis!
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 7/ So.. #FlyingLess needs to tread carefully in its messaging. The research shows that if people feel ‘attacked’ or their identities called into question, it can result in a “boomerang effect” wherein they just return to their original behaviour.
bit.ly/2MoR6Ni
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 8/ OK, so does this mean there’s NO VALUE in #FlyingLess?
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 9/ Before we get to THE VALUE OF FLYING LESS, let’s talk about WHY aviation specifically is a PROBLEM. As @Peters_Glen has pointed out, at a global level aviation is only really a sliver of the CO2 pie...

bit.ly/31PgtLS
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen 10/ BUT... CO2 is only PART of the problem. The world-leading authorities on aviation & climate (David Lee et al.) noted that in 2005 aviation was responsible for 4.9% of RADIATIVE FORCING. It’s 15 years later now, and that’s gonna be higher I’m sure...

bit.ly/2zaSxWM
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen 11/ 4.9% may not SOUND like a lot, but consider that only 6% of the world flies each year. That makes aviation an activity with an OUTSIZED impact (compared to, say, meat consumption - in which 95% of the world participates – at 14.5% of global GHGs).
bit.ly/2HdM6a0
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen [that’s another qualm I have w meat comparison; we only ever discuss climate footprint of FLIGHTS. That 14.5% is for the ENTIRE LIVESTOCK SUPPLY CHAIN, including deforestation].

I wonder... what’s the carbon footprint of the ENTIRE AVIATION SUPPLY CHAIN?
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen OK, but isn’t TECHNOLOGY reducing aviation emissions? To an extent, yes. Biofuels (especially new gen. which don’t impact food supply); low-weight materials; baggage surcharges; improved air traffic ALL help. BUT these efficiency gains are being outstripped by DEMAND GROWTH. Image
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen 14/ Right... but what about global governance? Doesn’t the UN’s Carbon Offsetting and Reduction Scheme for Aviation (CORSIA) plan to achieve “carbon-neutral growth from 2020”? Yeah, about that...

carbonbrief.org/aviation-consu…
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen 15/ So... Despite its many benefits, aviation is PRESENTLY a real challenge for climate change mitigation – this may change in a few decades w electric ✈️, but as the IPCC has pointed out, we need to start rapid DECARBONIZATION NOW: Image
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen 16/ And so we arrive at #FlyingLess. I can think of a number of reasons why – despite all the caveats – one may want to take part! First, as @bsaxifrage has shown, flying IS often one of the largest contributions, so cutting back can make a significant PERSONAL impact: Image
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen @bsaxifrage 17/ Second, as @GretaThunberg has said, this is about demonstrating the URGENCY of climate change at the political level. It’s a form of protest. It’s NOT about signalling ‘virtue’ or telling people what to do, but rather signalling POLITICAL PRIORITIES.
bit.ly/2Zaz9UE
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen @bsaxifrage @GretaThunberg 18/ Third: As @DoctorVive points out in this MAGNIFICENT THREAD (and this is especially the case for those of us in the climate community), flying less “increases our public credibility and inoculates us against the charge of moral hypocrisy”. Well said!

bit.ly/2z5KlXU
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen @bsaxifrage @GretaThunberg @DoctorVive 19/ Fourth, by talking about the benefits of #FlyingLess, or the fruitful experiences had whilst taking other transport modes or digital conferencing, we are DEMONSTRATING that low-carbon life is not so bad after all, not the sacrifice some believe it to be!
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen @bsaxifrage @GretaThunberg @DoctorVive 20/ IF done right (and that’s a big ‘IF’) – #FlyingLess can be INCLUSIVE, SUPPORTIVE, COLLABORATIVE, and CONTAGIOUS!

Must read on this (h/t @seleross): maisonneuve.org/article/2019/0…
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen @bsaxifrage @GretaThunberg @DoctorVive @seleross 21/ So, bottom line: Is there value in #FlyingLess? Yes there is.
✈️Travel responsibly
✈️If you must fly, make it count!
✈️Join the movement! (See @flyingless ; @ClimateHuman; For academics: tiny.cc/e6gm9y)
✈️Channel your action to the COLLECTIVE scale.
@KHayhoe @KenCaldeira @drvox @MichaelEMann @arvindpawan1 @Peters_Glen @bsaxifrage @GretaThunberg @DoctorVive @seleross @flyingless @ClimateHuman 22/ As for the latter... Write an MP; join a campaign; run for office; sign a petition, protest, donate, join with others, etc.

(Here’re ideas for regulatory changes to reduce aviation GHGs):
bit.ly/2MenrDm

/fin

• • •

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

Keep Current with Ryan Katz-Rosene, PhD

Ryan Katz-Rosene, PhD 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 @ryankatzrosene

Nov 4
1/ I’ve been wondering a bunch of things about a potential AMOC collapse: "When will it tip?" "What are the most likely effects?" "Can we stop it?" So I looked for answers in the many scientific papers published on this. Here’s a super plain language thread with what I found.🧵Image
2/ WTF is the AMOC? It’s the ‘Atlantic Meridional Overturning Circulation’, which is a fancy name for an important ocean current that effectively serves as a ‘heat pump’ for Earth - bringing warm surface water from the tropics Northward, releasing its heat, sinking, then bringing deeper cold water back South.Figure from Rahmstorf 2024
3/ How much is the AMOC weakening? Numerous studies show that the AMOC is indeed weakening substantially, more than even the latest climate models expected, and that it’s at its weakest state in the last 1600 years. Figure from Rahmstorf 2024
Read 10 tweets
Sep 26
🧵Here's a little story about a scientific paper from 20 years ago that sought to cast doubt on @MichaelEMann's famous 'Hockey Stick' warming graph by reworking his original data set. Now, 20 years out *even this same revised dataset* now very clearly shows.... a Hockey Stick! Image
2) In 1998 Mann and colleagues published a very important paper in Nature. They conducted an impressive study compiling temperature reconstructions for the last 6 Centuries, and found a startling 'hockey stick' shape: The world was warmer than it had been in nearly 600+ years! Image
3) Some years later, two Canadians wrote a paper refuting these findings, thus casting doubt on the modern human influence in global warming🤦‍♂️. They asked Mann for the original data (which he kindly supplied), and then claimed that the temperature reconstructions had errors. Image
Read 8 tweets
Aug 13
A very important paper was published yesterday, discussing the feasibility of limiting global warming to 1.5°C when considering a range of existing constraints.👇

The findings are indeed daunting, but maybe not as hopeless as many on this website seem to imply...

Quick 🧵 Image
2/ The study reviews chances of keeping global warming to within Paris Agreement bounds of 1.5C to 2.0C given the latest understandings of 5 key constraints: geophysical; technological; institutional; socio-cultural; and economic...
3/ They find that while it is possible - despite existing constraints - to remain below 1.6 °C of peak warming (which is a 'low overshoot' temperature which could eventually be brought back down to 1.5C), the *likelihood* of doing so is now below 50%... Image
Read 7 tweets
Jun 22
Was last week's heat dome unprecedented? NO, not by a long shot!

So why are most climate scientists very ALARMED about the warming signal they see in the historical record?

Because when you consider scale and temporality, the warming trend is clear, and alarming indeed!
🧵
2/ There've been many June heatwaves like this in the US before. And, the daily mean temp anomaly for Wednesday, June 19th (the peak day of the heat dome) wasn't very exceptional in much of the US East... (for that given day of the year). Image
3/ If we look at the month of June across the US SOUTHEAST going back to 1895, we can see that the region has been plenty warm before during the month of June (this record goes up to 2023)! Image
Read 10 tweets
Apr 5
It’s been six months since I posted this (semi-viral?) thread👇

So let’s take a renewed look: How has the debate between these two competing “climate urgency science narratives” evolved over the last half year?
🧵
1) The thread noted a divide between what I called “accelerationists” who were sounding alarm that 2023’s remarkable warming was the beginning of SOMETHING NEW, and those I (later) called “observationalists”, who claimed 2023’s extreme warmth fits within EXPECTED WARMING trends.
2) These positions continue to be expressed. @MichaelEMann, for instance, is adamant that “the truth [about global warming] is bad enough”; that the warming we saw in 2023 can be explained by known climate physics; and that 2023 fits within the modelled warming. Image
Read 12 tweets
Apr 5
This post by @FoodProfessor claims that the Trudeau Government purposely built the @ClimateInstit and @SP_Inst as part of its "lobbying machine" and that they are "mandated to advocate blindly" for the carbon tax.

This is a baseless claim.

Thread...🧵 Image
1) This story starts in 1988 when the Mulroney government created an Independent advisory council of experts called the National Roundtable on the Environment and the Economy. For 25 years it produced numerous reports on environmental policy, advising governments.
2) Then in 2013 the Harper government cancelled the NREE's funding because it did not like the advice it was receiving (in particular regarding carbon pricing). News story about it here: cbc.ca/news/politics/…
Read 13 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

Don't want to be a Premium member but still want to support us?

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!

:(