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John Marsham

@johnmarsham

Prof of Atmospheric Science, Weather, Climate, Tropical Meteorology, Communicating the Climate Crisis

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Latest posts by John Marsham @johnmarsham

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Responding to the DEFRA wood burning consultation — Mums for Lungs Read our guidance on how to respond to DEFRA’s wood burning consultation - deadline 19th March. This is a critical moment to get your voice heard by the government.

Our final task: respond to DEFRA’s wood burning consultation - deadline 19th March.

This is a rare chance to tell the government about the real-life impacts of neighbourhood burning.

Our guide to responding:
www.mumsforlungs.org/news/respond...

Thank you to all our amazing #CleanAirCrowd!

06.03.2026 09:00 👍 6 🔁 4 💬 0 📌 0
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Oil and gas prices are set on international markets beyond UK control

North Sea is not credible solution:
❌ output too small to make any difference
❌ will decline irrespective of new licences

Renewable generation and net zero tech 🔑 to bring energy independence
eciu.net/media/press...

04.03.2026 17:43 👍 95 🔁 35 💬 2 📌 2

Yes. Paper advocates analysing risk non quantitatively when quantification not possible or mis-leading (also in principles in king et sl)

04.03.2026 12:52 👍 0 🔁 0 💬 1 📌 0

Yes, but these are knowledge assessments with confidence estimates. If you start with a value, eg we want to avoid small island States being uninhabitable due to sea level rise, what is chance of that (as function of time, emissions, or T)? See Simon sharpe erl paper on telling the boiling frog

04.03.2026 08:40 👍 0 🔁 0 💬 1 📌 0

See principles in King etval global risk assessment

03.03.2026 22:34 👍 0 🔁 0 💬 0 📌 0

Eg it doesn't say what a 2 m sea level rise would do to our societies

03.03.2026 22:32 👍 0 🔁 0 💬 1 📌 0
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Take 8.3.3 in ar6 spm. That is an assessment of evidence not of risk to something policy makers value.

03.03.2026 22:31 👍 0 🔁 0 💬 1 📌 0

You're of course right that IPCC AR6 contains risk info. But it is an assessment of knowledge not a risk assessment. A risk assessment starts more with what you value, and then risk to it (as function of time, T, or emissions).

03.03.2026 22:31 👍 0 🔁 0 💬 1 📌 0

Let's meet to discuss. Email me

03.03.2026 22:16 👍 2 🔁 0 💬 0 📌 0

Great to see ITV covering this, and two @nebriefing.bsky.social speakers interviewed too

01.03.2026 22:10 👍 3 🔁 2 💬 0 📌 0

One reason it calls for media comms. Public demand is one key thing for gov action

01.03.2026 18:28 👍 0 🔁 0 💬 0 📌 0

Its one reason the article includes need for media comms. Public demand is a key route to gov action

01.03.2026 18:27 👍 1 🔁 0 💬 0 📌 0
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Netflix Backs Out of Bid for Warner Bros., Paving Way for an Ellison Takeover

The richest man owns X.

The second and third richest men control Google.

The fourth richest man owns Facebook, Instagram, and WhatsApp.

The fifth richest man owns The Washington Post.

And now the sixth richest could soon take over both Paramount and Warner Bros.

See the problem here?

26.02.2026 23:40 👍 38946 🔁 16530 💬 1827 📌 1084

More on the need for a global assessment of avoidable risks
climate.leeds.ac.uk/news/leeds-r...

27.02.2026 10:45 👍 9 🔁 7 💬 0 📌 0

Agreed. Labour members supported change - but party leadership did not listen

27.02.2026 09:00 👍 0 🔁 0 💬 1 📌 0

We really need a better voting system!

27.02.2026 08:08 👍 0 🔁 0 💬 1 📌 0

More on our call for a global assessment of avoidable climate change risks.

www.metoffice.gov.uk/about-us/new...

26.02.2026 17:46 👍 3 🔁 1 💬 0 📌 1

I was going to say "Where's his suit?" but someone beat me to it!

26.02.2026 07:59 👍 3 🔁 0 💬 0 📌 0
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We need a global assessment of avoidable climate-change risks To understand the urgency of emissions reductions, policymakers and citizens need a full analysis of what is at stake.

Major threats to our well being from climate change can be avoided, or hugely reduced, by rapid action.

Our Nature comment calls for a global risk assessment, effectively communicated to governments, the media and the public, to make clear what is at stake.

www.nature.com/articles/d41...

25.02.2026 22:19 👍 122 🔁 66 💬 7 📌 9

When I saw Spain floods, I wondered if it would hit our food. UK heavily dependent on Med, where climate changing fast. UK can survive without strawberries in Feb. But set to get worse until we stop Fossil fuels & reach net zero, see @nebriefing.bsky.social @profpaulbehrens.bsky.social talk

24.02.2026 18:20 👍 2 🔁 0 💬 1 📌 0
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Denmark is a poster child of the energy transition.

Yesterday I gave the opening keynote at Green Summit 2026. One message stood out: energy policy is industrial policy and increasingly geopolitics.

The next phase isn’t about targets, but competitiveness, resilience and execution at scale.

24.02.2026 07:18 👍 169 🔁 38 💬 4 📌 2

France. Mozambique and Bali floods have barely made uk news. We'll see if these do

24.02.2026 18:05 👍 4 🔁 1 💬 0 📌 0
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notorious radical left communist rag says tax the rich

18.02.2026 16:03 👍 20526 🔁 6596 💬 468 📌 456
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These two women are suing Andrew Tate, alleging he raped them. Here they visit the social media companies that created Tate. Please share.

*one voice altered to disguise identity

18.02.2026 11:36 👍 4486 🔁 3085 💬 116 📌 183
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Tony Blair: The fossil who is fighting wind on all fronts What’s in it for Tony Blair to attack wind power prices that are now lower than the overall market price?

Less renewables means higher prices.
www.rechargenews.com/opinion/tony...

18.02.2026 09:22 👍 46 🔁 20 💬 6 📌 5

So we either (i) trust Yusuf-I that Jenricks is a liar, (ii) trust Yusuf-II that he is not - but that means Yusuf called Jenricks a liar even though he didn't know him or know he was a liar, i.e. Yusuf is a liar.

So either way Reform leaders are liars.

18.02.2026 10:39 👍 1 🔁 0 💬 0 📌 0

So we either (i) trust Yusuf-I that Jenricks is a liar, (ii) trust Yusuf-II that he is not - but that means Yusuf called Jenricks a liar even though he didn't know him or know he was a liar, i.e. Yusuf is a liar.

So either way Reform leaders are liars.

18.02.2026 10:39 👍 0 🔁 0 💬 0 📌 0
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The Telegraph has even printed the article in its print edition this morning (albeit somewhat buried at the end of its Business section)

18.02.2026 07:59 👍 9 🔁 7 💬 1 📌 1

Ambrose Evans Pritchard is the Telegraphs international business editor. Business can see where the money is....

17.02.2026 20:01 👍 1 🔁 0 💬 0 📌 0
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An extraordinary new column in the Daily Telegraph (no, that's not a typo!) by Ambrose Evans Pritchard.

Yes, it includes two charts by Carbon Brief, sure.

But stay for the concluding few paragraphs about the electoral suicide of climate denial...

www.telegraph.co.uk/business/202...

17.02.2026 18:09 👍 108 🔁 51 💬 15 📌 10