Hey! I’m CEO of a company that has just raised $10 billion for an app that takes the hard work out of enjoying music. Did you know, some people waste hours each day listening to “tunes”. Our AI will listen to it for you and summarise it in a 15 second scream leaving you more time to focus on what's really important in life: adding value.
John Kennedy
Climate scientist, diagram monkey, probabilistic historian and scientific illustrator. Occasional glass engraver, embroiderer, and computer 3d stuff-er. He/him
Currently head of climate information at WMO.
All views and opinions are my own. This is not, sadly, a promise of novelty: it's a disclaimer. Though, on reflection, it sounds slightly megalomaniacal. All views? Really?! No, just the ones I express.
What’s a zettajoule?
With approximations and back-of-an-envelope stuff that will make you cry.
https://diagrammonkey.wordpress.com/2026/03/28/whats-a-zettajoule/
OK, that's one glowing AI article too many in Nature and one cosy fireside editorial too many from Science.
Can we have a prestige journal with a bit of attitude please, a little bite, a hint of tooth. Articles I want to read not shred. Papers the authors might actually have enjoyed writing.
Not waving but drowning
When climate sceptics outsource their handwaving to AI the results are... predictable.
[With lovingly crafted 100% human MS Paint original artwork.]
https://diagrammonkey.wordpress.com/2026/03/12/not-waving-but-drowning/
For a rainy day
Has global warming accelerated? Why? How much? How do we know? What does it all mean? etc. With hand-drawn illustrations, dodgy metaphors, and a complete lack of clear answers.
https://diagrammonkey.wordpress.com/2026/03/07/for-a-rainy-day/
Word of the day is verisimilitude
On data, reality, realism, the texture of reality and, yes, verisimilitude.
https://diagrammonkey.wordpress.com/2026/03/03/verisimilitude/
Centennial Observing Stations State of Recognition Report
Long station series are vital for monitoring long-term environmental change. The report recognises 474 long-term observing stations worldwide including 10 that have been operating for more than 250 years.
Not waving but drowning
https://diagrammonkey.wordpress.com/2026/03/12/not-waving-but-drowning/
A small update to my long and unjustifiably profane blog post on the rollercoaster that is global temperature and the interpretations of its wrigglin' innards.
ENSO is coming
Q. What do CGI cigarette butts and global temperature estimates have in common?
A. Verisimilitude.
https://diagrammonkey.wordpress.com/2026/03/03/verisimilitude/



