You don't use git? Oh wow. OK. It's really cool. What's that? You heard it's kind of difficult. Nah, it's really simple. How does it work? Well, you just need to know a little graph theor... Hey! Where are you going?

Come and join us developing AI for solving climate problems. careers.metoffice.gov.uk/join-us/sear...

For regular monthly updates to CRUTEM (and hence to HadCRUT) we rely on monthly data provided by National Met Services via the WMO's CLIMAT system. Unusually, the USA data didn't yet make it into the CLIMAT data feed for Mar-Jun 2025. Note the USA-sized gap in the non-infilled version of HadCRUT:

After a brief (ahem) hiatus, the HadCRUT5 global temperature dataset has now been updated to June 2025 by @metoffice.gov.uk @climateuea.bsky.social and @ncas-uk.bsky.social

Open Ocean In which I go through the steps of writing a simple gridder for in situ sea surface temperature data. diagrammonkey.wordpress.com/2025/09/21/o...

Open Ocean In which I go through the steps of writing a simple gridder for in situ sea surface temperature data. diagrammonkey.wordpress.com/2025/09/21/o...

Now with added HadCRUT5.

How to quantify the impact of AI on long-run cultural evolution? Published today, I give it a go! 400+ years of strategic dynamics in the game of Go (Baduk/Weiqi), from feudalism to AlphaGo!

Every time.

Take any claims about models not matching observations with a pinch of salt, if only a multi-model mean is shown. Model uncertainties and radiative forcing uncertainties are important!

When the web that we weave is complete diagrammonkey.wordpress.com/2025/09/17/w...

When the web that we weave is complete diagrammonkey.wordpress.com/2025/09/17/w...

Rewatching old series while crocheting can be a wonderful experience. Audiobooks require a bit too much concentration, but a show with a good script (Mad Men, at the moment) is just right. The long pauses for smoking and drinking pace things nicely.

Monthly update of the monthly climate dashboard We now have most global temperature datasets updated to August, but numerous other updates too. www.jkclimate.fr/MonthlyDashb...

I installed MS Teams on my phone specifically so I could watch how this unfolded while I was "in a meeting". I was not disappointed.

Open the email to open the pdf to open the browser to open Teams...

*Most* eels don’t wear wigs. Did you know that? Did you know that *important fact* about eels?? Well there are a LOT more eel facts where that came from. Most being, ya know, better and more useful eel facts. You better learn more with an eel facts advent calendar. Get one at EelFacts.Net

Bonferroni of the vanities On sea level and not seeing the wood for the tree diagrammonkey.wordpress.com/2025/09/11/b...

Bonferroni of the vanities On sea level and not seeing the wood for the tree diagrammonkey.wordpress.com/2025/09/11/b...

Interesting preprint and thesis on observational uncertainty and climate sensitivity (observational uncertainty matters) diagrammonkey.wordpress.com/2025/09/06/i...

This is an old shot, but at the time I couldn't find any answers about these clouds and their formation. Thought I'd try again here.

Everyone: Me: I turned a bunch of blog posts into a hypertext maze using Twine. www.jkclimate.fr/Twines/How_t...

Everyone: Me: I turned a bunch of blog posts into a hypertext maze using Twine. www.jkclimate.fr/Twines/How_t...

While we’re searching for something to say diagrammonkey.wordpress.com/2025/09/07/w...

While we’re searching for something to say diagrammonkey.wordpress.com/2025/09/07/w...

Accidental art

Interesting preprint and thesis on observational uncertainty and climate sensitivity (observational uncertainty matters) diagrammonkey.wordpress.com/2025/09/06/i...

Someone somewhere has linked to my blog from their uni course materials. I have no idea what they linked to, but the educational value of my blog is bounded at the upper end by zero so I assume I'm some kind of cautionary tale. To any students having my nonsense inflicted on them, I'm sorry.

What CC license should be used for a dataset to ensure that it can be used in something like IMBIE or other "synthesis dataset" where multiple datasets are combined to give a single best estimate (and uncertainty range)?

A beautifully concocted irrelevance

As I am writing about the art inspired by the challenge of remembering nuclear waste, I wanted to share a unique award-winning design that exemplifies how people who aren’t convinced you can just disappear waste think about this task. On a runway so this may be short… 1/

Hypertext mashup of "how to science a science with science" and "metathugs". Made with Twine. Because what it needed was more footnotes and a completely bewildering structure. www.jkclimate.fr/Twines/How_t...

Hypertext mashup of "how to science a science with science" and "metathugs". Made with Twine. Because what it needed was more footnotes and a completely bewildering structure. www.jkclimate.fr/Twines/How_t...

Our 400+ page comment on the DOE climate working group report is now out. Our conclusion: The merchants of doubt are back, and they're coming for climate science.

Musing #114516 diagrammonkey.wordpress.com/2025/09/01/m...

Musing #114516 diagrammonkey.wordpress.com/2025/09/01/m...

"Mama, how come every time I see a Wald airplane post it's gone viral?" "..." "..." "..." "Ohhhhhhhhh......"

Personal Knowledge A book it only took me 14 years to read. It felt longer. diagrammonkey.wordpress.com/2025/08/30/p...

What more can we do to get heard? Probably not the same thing over and over again. diagrammonkey.wordpress.com/2025/08/30/w...

The most important thing I learned working in an office is, if you have a working stapler, you guard it with your life. If someone wants to use it, they bring their paper to the stapler and never, ever stapler to paper. Everyone should know that while you would not die for your stapler, they might.

Thanks to the Guardian for covering our efforts. Read more here: www.theguardian.com/environment/... Follow us, support the mission, and help keep climate truth alive.

What more can we do to get heard? Probably not the same thing over and over again. diagrammonkey.wordpress.com/2025/08/30/w...

If you were a user or admirer of NOAA’s amazing climate.gov website - which has had all the good stuff (e.g., actual data and climate monitoring indices) removed by government - some web and data gurus/guerrillas are about to launch a recreation at climate.us. Follow @climate.us for launch updates.

Personal Knowledge A book it only took me 14 years to read. It felt longer. diagrammonkey.wordpress.com/2025/08/30/p...

This be science. One person's life's work becomes a citation to support a single sentence in somebody else's student paper. Gaze on my* works ye mighty and despair. * not my works, I should say; most people see my works and say "you call these works?"

When you know who was "shocked" before you even read the article. www.theguardian.com/environment/...

When you know who was "shocked" before you even read the article. www.theguardian.com/environment/...

Our comment on the DOE CWG report is done. It tips the scales at 439 pages, approx. 3x longer than the DOE report. This is related to Brandolini's law: The amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it. Example: refuting one sentence.

can crabs suffer. yes. unquestionably. but we boil them alive anyway so, let's say that the answer isn't obviously no, which it is. the next question is: why should we care about this, when we continuously ignore the suffering of actual living things the answer is: because it's profitable to do so