🌀 New on 4billionyearson.org - The Climate Helix. Watch global warming spiral outward, year by year, and how the seasons have shifted along the way. Canada is warming ~2× the global average - undeniable. 🇨🇦 4billionyearson.org/climate/heli... @katharinehayhoe.com hope you like this new feature 🌍

Niño 3.4: +0.9°C El Niño may be building — but the bigger story is this: AI and physics models are starting to disagree 🧵 You can track both, updated weekly:

Niño 3.4 now +0.9°C and rising. The key signal isn’t just the number - it’s the trend. Weekly updates here: 4billionyearson.org/climate/enso... #ENSO

We may be able to watch this in real time: AI vs physics ENSO forecasts are diverging. AI model currently predicts a stronger El Niño. Track it weekly: 4billionyearson.org/climate/enso... #AI #ENSO

Plug-in solar systems are getting close to formal UK approval (BSI standard expected mid-July). I’ve been tracking the regulations, kits and news updates here: 👉 UK Plug-In Solar Tracker (updated daily): 4billionyearson.org/plug-in-sola... #UKSolar #PlugInSolar

How does +0.9°C compare? Still early - but similar build phases preceded major El Niño events. Historical events: 4billionyearson.org/climate/enso... #ENSO #ElNino

What does a +0.9°C Niño 3.4 mean? → Drought risk ↑ (Australia, Indonesia) → Rainfall ↑ (Peru, East Africa) → Adds to global heat Breakdown: 4billionyearson.org/climate/enso... #ENSO #Climate

🌊 ENSO watch: Niño 3.4 hits +0.9°C Now well above El Niño threshold and rising. Latest weekly state: 4billionyearson.org/climate/enso... #ENSO #ElNino

🤖 vs 🌊 ENSO forecasts diverging Niño 3.4: +0.9°C NOAA physics models: El Niño likely SNU AI model: stronger El Niño Watch both update weekly: 4billionyearson.org/climate/enso... #ENSO #AI #Climate

I keep wondering whether AI is less an invention, and more a continuation of the long arc of evolution through human intelligence ... Curious whether you would agree or disagree with that framing? More here: www.4billionyearson.org/posts/the-gr...

[email protected] I've created 4billionyearson.org to connect global climate change to specific, high-resolution data for all countries, US states and UK regions such as SE and Central South of England. Data here: www.4billionyearson.org/climate/engl...

Inspired by Katharine Hayhoe’s reminder that talking about climate change matters, I built 4billionyearson.org - making climate data visual and explorable. Canada is warming about twice as fast as the global average 🇨🇦 www.4billionyearson.org/climate/canada @katharinehayhoe.com

The Pacific is loading up again. El Niño is now 93% likely by autumn 2026, and it's arriving on a world already 1.3°C above the pre-industrial baseline. Last time we got a strong one (2023-24), it made 2024 the first year above 1.5°C. A thread 🧵

The "Spring Creep" is accelerating. 🌸📉 We've seen record early temperatures this year. This isn't just "weird weather", it's a fundamental shift in our seasonal timing. Explore the interactive Shifting Seasons tracker: 🔗 www.4billionyearson.org/climate/shif... #Climate #UKwx #DataViz