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The Real Prof. Katharine Hayhoe Profile picture
@KHayhoe
Jul 27 • 9 tweets • 4 min read Twitter logo Read on Twitter
With climate records being shattered weekly, this cartoon is even more apt.
July global avg temp is the latest to fall; a new analysis by @khaustein finds it's the hottest ever recorded, possibly the hottest in 120,000 years.
Here's what this means & why there’s still hope.🧵 A cartoon of IPCC scientists tapping a mic and asking if it is on (because no one appears to be listening to them)
July's average global temperature is projected to be 1.3-1.7°C above the average before human-induced warming began. That's 0.2°C hotter than the previous record set in 2019. For reference see below for July temps through 2022. Source: https://t.co/J6zKe0c9whncei.noaa.gov/access/monitor…
Global average temperatures for July from 1880 to 2022 show a steady increase over decadal time scales.
One month above 1.5C **does not mean the Paris Agreement has failed.** Long-term avg warming is measured differently and we've previously seen months above 1.5°C. So while this isn't not a good sign, we still have time to act. For more, read this thread:
However, this record heat IS part of a larger trend. Global average temps have risen by 1.2°C since 1850 and we’re on track to a rise of 2.8°C above pre-industrial levels. That's a lot better than the 4+C we were heading to a decade ago, but...
Source: https://t.co/m1t5YNTFWXclimateactiontracker.org/global/cat-the…
A thermometer showing how much more global warming we can expect based on policies implemented and promised today.
It's time to get serious about cutting emissions, weaning ourselves off fossil fuels, and limiting warming to 1.5°C. With opportunities like the African Climate Action Summit, G20 & COP28, top polluters must adopt tougher targets and act decisively. wri.org/insights/inter…
As John Holdren said, we have 3 choices: adaptation, mitigation, and suffering. We are already seeing so much of the latter: record-breaking temperatures, heatwaves, and fatal flooding across the globe. It's not just statistics; human lives are at stake. bbc.com/news/world-asi…
So what can you do? A lot!
🎙️ start a conversation
🤲 join a climate action group
💰 make your $ count
💡spark ideas at work & school
🗳️ hold politicians accountable
🏡 reduce your 👣 AND amplify by talking about it

For more, read: dontlookup.count-us-in.com
And don't forget to sign up for my free weekly newsletter. Each week, I share good news, not so good news, and what you can do about it. In this week's issue, I focused on the risks of using gas in our homes and the rewards of "electrifying everything"! us14.campaign-archive.com/?u=fa37a090438…
Why? Because as the IPCC says, Image

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More from @KHayhoe

The Real Prof. Katharine Hayhoe Profile picture
May 11
This iconic graph tracks how rapidly our planet is warming. Yet every time it's shared on Twitter, someone always asks, "Why does it begin in 1850?"

The answer is simple: it's when we first had enough thermometers to compute a truly representative global temperature average. Global average temperature ...
The oldest continuous thermometer-based temperature record is Central England Temperature. It began in 1678 ... when Charles II was King of England! It shows how unusual today's warming is compared to the last four centuries of temperature variability. metoffice.gov.uk/hadobs/hadcet/ Central England mean temper...
We can go further back via proxy records or "natural thermometers" such as historical records, bloom & harvest dates, pollen records, ice cores, etc. Against the backdrop of the last 2,000 years, today's warming is even more abrupt and unusual. Source: nature.com/articles/s4159… Reconstructed global mean t...
Read 12 tweets
The Real Prof. Katharine Hayhoe Profile picture
May 4
On climate change, we often assume people are either believers or deniers.

I don't like either label, because climate change is not a religion.

Instead, I prefer the 6 categories identified by @YaleClimateComm for the US. climatecommunication.yale.edu/about/projects… The Yale Program on Climate...
At one end, 53% are already alarmed or concerned. What's critical, though, is that most still aren't ACTIVATED. That's right: only 8% of people in the US are activated! So there's plenty to do in those categories to move people from worried->active. climatecommunication.yale.edu/publications/s…
17% are cautious, and here's a key characteristic of that group: they often lead w their doubts. If those doubts are disrespected, the conversation fails. So don't assume someone is dismissive right away. Ask questions + LISTEN. @karinkirk_mt shows us how: yaleclimateconnections.org/2018/01/middle…
Read 14 tweets
The Real Prof. Katharine Hayhoe Profile picture
Apr 5
I face abuse on social media more days than not. Most of it comes from accounts who identify as male, and the slurs used are often gendered.

For me, Twitter has the highest number of trolls. LinkedIn is next. Website email, Facebook and Instagram tie for third.
Facebook used to be a lot higher…similar to Twitter…but in Aug 2018 they moved “climate change” and “clean energy” to the list of “sensitive topics” and shadow-banned my account. Since then, growth virtually ceased and the number of people-incl trolls-seeing my posts plummeted.
I should add that I did not contribute to the survey above, but it aligns well with my experience.
Read 4 tweets
The Real Prof. Katharine Hayhoe Profile picture
Mar 29
Looking for more from me than tweets? I regularly share unique content on a dozen other online platforms...and you won't see most of it on Twitter. Browse this thread for direct links and dive in!
1/ Every week, my free newsletter shares good news, not so good news, and something you can do about climate change. It also has links to join my online talks and read things I've written recently. Subscribe here: mailchi.mp/fae4224ba66d/s…
2/ On LinkedIn, I share longer posts aimed at a knowledgeable audience. I also re-post good discussions and articles from other experts that I appreciate and think others might, too. linkedin.com/in/katharine-h…
Read 11 tweets
The Real Prof. Katharine Hayhoe Profile picture
Mar 29
Much has changed here since Elon took over. Based on my own before-and-after expts, climate denial responses are up 15-30x. Changes in followers are even more dramatic: Stef's analysis shows that climate accounts have seen little change while denial accounts have boomed.
I've tested a few hypotheses and I think there are a few different factors contributing to this.

First, there was an exodus in Oct. I lost several thousand followers myself and about 10% of the people on my list of "scientists who do climate". Not huge but still real.
Second, many of the trolls replying to climate topics these days joined Twitter within the last six months. Some aren't real, of course, but many swarmed back as previously banned accounts were re-opened and their perspectives validated and supported.
Read 8 tweets
The Real Prof. Katharine Hayhoe Profile picture
Mar 20
Here are the big takeaways from the @IPCC_CH Synthesis Report released today.

First, climate change has already caused widespread and substantial losses to almost every aspect of human life on this planet, and the impacts on future generations depend on the choices we make NOW. IPCC SYR AR6 figure 1
Second, every bit of warming matters. The warmer the planet gets, the more widespread and pronounced the changes in both average climate and climate and weather extremes become. IPCC SYR AR6 Figure 2
Third, the impacts are very serious: they directly affect our health, our food sources, our water and more. IPCC Synthesis Report AR6 Figure 3
Read 11 tweets

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