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John Marsham

@johnmarsham.bsky.social
1.1K followers 750 following 604 posts

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

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John Marsham @johnmarsham.bsky.social · 7h
This does state role of #ClimteCrisis on @BBCNews but missed opportunity to implication for future, eg 40 deg could be normal in 20250, and 45 deg hot - what that does to farming & food supply www.bbc.co.uk/news/article...
bbc.co.uk
Why hot summer could lead to smaller potatoes in supermarkets
Farmers say yields are down because they have had to harvest smaller potatoes earlier than normal.
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John Marsham @johnmarsham.bsky.social · 7h
Missed opportunity@BBCNews to say WHY water levels have been low & what it means for future. Climate Crisis disrupting travel & holidays globally - floods, droughts, fires. On what other topic would journalists not say reasons for event www.bbc.co.uk/news/article...
bbc.co.uk
We spent thousands on a Tui river cruise but ended up on coach trips
Passengers have described their anger after their itineraries changed to involve hours spent on coach trips instead.
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John Marsham @johnmarsham.bsky.social · 06/10/2026
As well as statistics, Rain over Africa has been tested in with African operational forecasters in real time in WISER-EWSA and EW4Energy testbeds (southern Africa & Ghana), demonstrating value for warnings and decisions
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John Marsham @johnmarsham.bsky.social · 06/10/2026
ML is revolutionising satellite retrieval. We show ML Rain over Africa beats not only other real-time rainfall estimates, but also high-quality GPM IMERG! Great for nowcasts+warnings. Fantastic work from Simon Ageet, @dougparkermeteo.bsky.social et al. rmets.onlinelibrary.wiley.com/doi/10.1002/...
rmets.onlinelibrary.wiley.com
Evaluation of Satellite Rainfall Products for Nowcasting Over Southern Africa Using Rain‐Gauges and Lightning Data
Three satellite-based rainfall nowcasting products used in the WISER EWSA testbeds, CRR, IMERG-HQ and the new machine-learning-based Rain over Africa (RoA), were evaluated against high-resolution rai...
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John Marsham @johnmarsham.bsky.social · 05/10/2026
Floods but again no mention of #ClimateCrisis on BBC (or of Crete floods as fa as I can see). There is a failure of journalism outside of the Climate/Env section of BBC to address climate crisis @mattmcgrathbbc.bsky.social www.bbc.co.uk/news/videos/...
bbc.co.uk
Two people killed as floods hit Spain's Catalonia region
Spain's Prime Minister Pedro Sánchez says the situation in Catalonia remains "very complicated".
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John Marsham @johnmarsham.bsky.social · 05/10/2026
Banning journalists from Conservative conference with no explanation - anyone who thinks our democracy is weakened and under threat needs to wake up
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John Marsham @johnmarsham.bsky.social · 01/10/2026
Welcome to the bleak new world where AI assesses grant proposals. I think we should push back on this - certainly until they can prove it works www.resultsense.com/news/2026-09...
resultsense.com
AI triage rejects half the bids in a UKRI-funded grant call
Academics are dismayed after an EPSRC-funded cybersecurity network used AI models to sift 179 grant bids, sending only the top half on to human review.
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John Marsham @johnmarsham.bsky.social · 30/09/2026
Notably article has remarkably little on why prices are rising, ie wars, elec linked to gas price
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John Marsham @johnmarsham.bsky.social · 30/09/2026
In an article on UK energy prices rises, BBC quotes someone urging gov to back Jackdaw and Rosebank, and doesn't say that won't help prices at all. To me, that is failing to do what journalists should do www.bbc.co.uk/news/article... please complain.
bbc.co.uk
Household energy bills forecast to see biggest rise in four years
A typical household faces an annual gas and electricity bill of £1,999 from January, based on a key forecast.
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John Marsham @johnmarsham.bsky.social · 28/09/2026
Buried on BBC Asia page (not on climate page) - Bangkok disaster zone, $330 million damage, 0.3% off GDP, hundreds of thousands affected - and no mention of why! Climate Crisis driven by burning fossil fuels .... @mattmcgrathbbc.bsky.social www.bbc.co.uk/news/article...
bbc.co.uk
Bangkok roads submerged as flood disaster declared
Authorities said the heavy rains have subsided but the flooding is not yet over.
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John Marsham @johnmarsham.bsky.social · 28/09/2026
Great work!
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John Marsham @johnmarsham.bsky.social · 27/09/2026
Thanks @yorkshireeveningpost.co.uk for discussion of El Nino. The Pacific may feel far away, but our world is interconnected in so many ways & they affect us. Floods, droughts, heat, food & water availability get worse until we have phased out fossil fuels. www.yorkshirepost.co.uk/news/weather...
yorkshirepost.co.uk
Leeds professor on how El Niño could impact UK’s weather and disrupt food supply
John Marsham, Professor of Atmospheric Science at the University of Leeds, explains the El Niño and how the record-breaking phenomenon could impact the UK.
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John Marsham @johnmarsham.bsky.social · 27/09/2026
Great work engaging people in Ilkley. Most people underestimate how concerned others are. Most MPs underestimate how much people support action on climate. Time for a @nebriefing.bsky.social . Time to write to your MP if they are not already supporting it.
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John Marsham @johnmarsham.bsky.social · 26/09/2026
Good to see @channel4news.bsky.social cover this, but missed opportunity to say it gets worse until we've phased out fossil fuels. 40 deg could be normal in 25 years. Plus el nino will raise prices further.
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John Marsham @johnmarsham.bsky.social · 26/09/2026
Good to see @channel4news.bsky.social covering this, but missed opportunity to point out that this gets worse until we've phased out fossil fuels, 40 deg could well be a normal summer in just 25 years etc. Plus el nino going to affect imports
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Reposted by John Marsham
Emma Monk @monkemma.bsky.social · 25/09/2026
🧵 As front-page headlines go, this has to be one of the most misleading I've seen in a long time It's an out-and-out lie But notice the trick they use to get away with it...👀 *They're* not lying - they're just quoting someone else who is👍🏻 In this case, the leader of the opposition🙄 1/33
Daily Express headline:

"More Freedoms Handed to New Arrivals than British Citizens"

Above an image of Kemi Badenoch

All with a Monk Debunked stamp on top
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John Marsham @johnmarsham.bsky.social · 25/09/2026
Most people underestimate how concerned everyone else is about climate crisis. Number-1 most read on BBC news...
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John Marsham @johnmarsham.bsky.social · 24/09/2026
www.carbonbrief.org/factcheck-ni...
carbonbrief.org
Factcheck: Nine false or misleading myths about North Sea oil and gas - Carbon Brief
Carbon Brief factchecks some of the most common claims about North Sea oil and gas.
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John Marsham @johnmarsham.bsky.social · 24/09/2026
www.carbonbrief.org/factcheck-ni...
carbonbrief.org
Factcheck: Nine false or misleading myths about North Sea oil and gas - Carbon Brief
Carbon Brief factchecks some of the most common claims about North Sea oil and gas.
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John Marsham @johnmarsham.bsky.social · 24/09/2026
Other countries are not issuing new licences. Anyone know if any of them have similar reserves to UK? @carbonbrief.org @drsimevans.carbonbrief.org ?
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John Marsham @johnmarsham.bsky.social · 24/09/2026
Everyone agree this is simply a lie? When did media stop holding MPs to account? 1. High gas prices are not a result of Labour approach to N Sea. Set internationally. No amount of gas from UK waters could make a signicant difference. Taxes etc are a small fraction, and cant explain increases 2.
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John Marsham @johnmarsham.bsky.social · 24/09/2026
Sea level rise often ignored as 'far future', but good to see recognised as existential. See also our Nature commentary, www.nature.com/articles/d41...
nature.com
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.
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John Marsham @johnmarsham.bsky.social · 23/09/2026
though I think this El Nino may not give a strong IOD (please correct me if I'm wrong on that)
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John Marsham @johnmarsham.bsky.social · 23/09/2026
South Sudan is dealing with drought, but faces flooding from upstream sources as Lake Victoria may reach a record high panafricanvisions.com/2026/09/sout... all sadly consistent with risks highlighted in @carolinewainwright.bsky.social 's 2020 paper rmets.onlinelibrary.wiley.com/doi/10.1002/...
rmets.onlinelibrary.wiley.com
Extreme rainfall in East Africa, October 2019–January 2020 and context under future climate change
The 2019 October–December rains over East Africa were one of the wettest seasons on record, with many locations receiving more than double the climatological rainfall, leading to floods and landslide...
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John Marsham @johnmarsham.bsky.social · 16/09/2026
And get fossil fuel money and big donations out of politics
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John Marsham @johnmarsham.bsky.social · 14/09/2026
also (not from an electoral commissioner) www.theguardian.com/commentisfre...
theguardian.com
Political donations are poison to our democracy – but there’s an easy antidote to that | George Monbiot
As revelations about Reform UK’s donors emerge, it’s clear that increasingly complex forms of patronage can’t be regulated effectively. We need a clean sweep, says columnist George Monbiot
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John Marsham @johnmarsham.bsky.social · 14/09/2026
Why do BBC headlines always seem to be "What Reform says about what's happening", not "What is actually happening"?!
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John Marsham @johnmarsham.bsky.social · 14/09/2026
Good work from @eciu.net on the double-whammy that is possibly UK lowest harvest on record followed by record El Nino. UK media so far I think more focused on El Nino impacts on UK storms - I guess the food price story will grow as impacts appear. eciu.net/media/press-... eciu.net/media/press-...
eciu.net
UK harvest even worse than previously thought – new data
Updated figures released by the Agriculture and Horticulture Development Board (AHDB) suggest the UK's arable harvest is now expected to be even smaller than previously forecast.
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John Marsham @johnmarsham.bsky.social · 12/09/2026
Top 10 uni courses for subject contentment are all vocational except 'Earth & marine sci'. Is it as 'vocational' for many who study to address environmenatl crises. www.theguardian.com/education/20...
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John Marsham @johnmarsham.bsky.social · 12/09/2026
Open letter in dupport of RNLI 38d.gs/zjos
38d.gs
An open letter in support of the volunteers and staff at the RNLI
This is a disgrace. Brave RNLI volunteers being called scum for risking their lives to save others at sea is just plain wrong. So I've signed an open letter of thanks for the RNLI letting them know th...
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John Marsham @johnmarsham.bsky.social · 12/09/2026
Reflects (1) A near complete failure of media, including BBC, to hold politicians to account on severity of climate crisis & cost (in fact savings) of net zero. Note Conservatives guilty too (2) Huge private & fossil-fuel donations to parties - which have to stop www.carbonbrief.org/factcheck-re...
carbonbrief.org
Factcheck: Reform UK’s 45 false or misleading claims about climate and energy - Carbon Brief
Reform UK, led by Nigel Farage, has emerged as a major force in UK politics in recent years – pushing…
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John Marsham @johnmarsham.bsky.social · 12/09/2026
I added 1 Stop huge private & fossil fuel party donations 2 Ensure the BBC holds politctians to accoun. It is a failure of BBC & other media that Reform (& Tories) have got away with so many lies & mis-info www.carbonbrief.org/factcheck-re...
carbonbrief.org
Factcheck: Reform UK’s 45 false or misleading claims about climate and energy - Carbon Brief
Reform UK, led by Nigel Farage, has emerged as a major force in UK politics in recent years – pushing…
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John Marsham @johnmarsham.bsky.social · 12/09/2026
I just emailed the UK Gov to demand: - #TellTheTruth: issue & publicise the full, unredacted National Security Assessment - Hold a UK wide briefing on Climate & Nature Risks - #ActNow: mitigate against the serious threats to UK security - actionnetwork.org/letters/dema...
actionnetwork.org
Demand the UK Government Tell the Truth and Act Now!
Join us to email the UK Government and show support for the three demands of Extinction Rebellion’s Love & Rage event. Our demands: - #TellTheTruth by issuing and publicising the full, unredacte...
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John Marsham @johnmarsham.bsky.social · 12/09/2026
One of the challenges of communicating the seriousness ClimateCrisis, is the fact that is affects far far more than people realise, "11% of UK homes could be at risk" from resultant subsidence, thene there's floods, sea-level rise ... www.theguardian.com/business/202...
theguardian.com
‘We can see into the other room’: insurers face surge in subsidence claims
Stressed UK homeowners tell of cracks opening up in the walls around them after two record-hot summers
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Reposted by John Marsham
Adam Bienkov @adambienkov.bsky.social · 10/09/2026
From the new Private Eye
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John Marsham @johnmarsham.bsky.social · 10/09/2026
I'm clearly an optimist. I thought for a minute that, according to BBC, Farage was "ready for departure": I'm certainly ready for his departure from UK politics
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Reposted by John Marsham
Sunder Katwala (sundersays) @sundersays.bsky.social · 08/09/2026
If you would like to add your voice to tens of thousands of people thanking RNLI volunteers for their work, 38 Degrees have organised this open letter to express public support (at a time when a hateful fringe have been intimidating & abusing RNLI volunteers) act.38degrees.org.uk/act/rnli-tha...
act.38degrees.org.uk
An open letter in support of the volunteers and staff at the RNLI
This is a disgrace. Brave RNLI volunteers being called scum for risking their lives to save others at sea is just plain wrong. So I've signed an open letter of thanks for the RNLI letting them know th...
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Reposted by John Marsham
Ilikecaketoo (UK) @ilikecaketoo.bsky.social · 09/09/2026
Disgraceful that the RNLI have to say this today, but here we are 😞. If you would like to donate👇🏻. rnli.org/support-us/g... #RNLI #RNLISavesLives
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Reposted by John Marsham
Rhodri Marsden @rhodri.biz · 08/09/2026
It won’t stop these reprehensible, cowardly pieces of shit attacking the RNLI, but here is a handy link to donate rnli.org/support-us/g...
rnli.org
Donate to the RNLI and help save lives at sea
Your donations really make a difference. We depend on your generosity to educate people to stay safe and prevent tragedies on and offshore. Donate here.
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John Marsham @johnmarsham.bsky.social · 07/09/2026
Remember when this would have been a big headline? We've normalised climate breakdown - but impacts on food & nature are now really beginning to hit
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John Marsham @johnmarsham.bsky.social · 05/09/2026
45.7 in September. Imagine how hot August could be....https://www.euronews.com/my-europe/2026/09/04/spain-matches-september-heat-record-at-457c-as-extreme-heat-grips-country
euronews.com
Spain matches September heat record at 45.7C
The unseasonably high September temperatures follow a series of extreme summer heatwaves across Europe, which scientists say have been intensified and prolonged by human-driven climate change. #Europe...
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John Marsham @johnmarsham.bsky.social · 04/09/2026
@bbc-politics.bsky.social this 100% should have "outdated conventions" in quotes - and how can BBC just broadcast one party's view & be imartial anyway?
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John Marsham @johnmarsham.bsky.social · 04/09/2026
UK is far from only country where mis/dis-info is rife. In Indonesia, vulnerable to El Nino, mis-info is circulating about causes of El Nino - when the cause of amplified impacts is clear - burning fossil fuels. Thanks @afp.com for quoting me & pushing back mis-info factcheck.afp.com/doc.afp.com....
factcheck.afp.com
Indonesian politician baselessly claims HAARP behind supercharged El Nino
As Indonesia dealt with wildfires and a dry season turbocharged by a powerful El Nino, posts shared a clip of a former Jakarta gubernatorial candidate saying the weather phenomenon and rising global t...
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John Marsham @johnmarsham.bsky.social · 03/09/2026
4 We haven't done our bit as temperatures increase until we stop burning fiddling fuels. 5. 2026 is not like 1976. Appalling 'journalism'
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John Marsham @johnmarsham.bsky.social · 03/09/2026
2 Its price of gas that has put up energy bills not net zero (renewables have saved us billions). 3 Net zero is cheaper than fossil fuels so will make us richer not poorer. 4We cant adapt forever, it will get too hot, even in our kids lifetimes.
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John Marsham @johnmarsham.bsky.social · 03/09/2026
Please complain to @BBC on this www.facebook.com/reel/1822099... no challenge to dis-info in interview & weak in article. It doesn't break impartiality to point out someone is wrong when they are. e.g. No challenge on: 1 Its co2 from fossil fuels, not sun or volcanoes....
facebook.com
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Reposted by John Marsham
Prof Julia Steinberger 🌹🌱🌍 #ClimateAction #Fightfascism @jksteinberger.bsky.social · 01/09/2026
⚠️ 🌍 ⚠️ We stand with humanity: A scientist statement to confront climate destruction⚠️ 🌍 ⚠️ ✒️ 🙏 If you are an academic or healthcare professional, please consider signing. 🙏✒️ framaforms.org/we-stand-wit...
framaforms.org
We stand with humanity: A scientist statement to confront climate destruction | Framaforms.org
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John Marsham @johnmarsham.bsky.social · 02/09/2026
Please complain on this . Loads of mis-info simply unchallenged by BBC. "we can adpat forever" "volcanoes & sun". "2026 like 1976". "cost of net zero" etc www.facebook.com/reel/1423937...
facebook.com
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John Marsham @johnmarsham.bsky.social · 01/09/2026
Upcoming @wmo-global.bsky.social Sand and Dust Storm Warning Advisory and Assessment System (SDS-WAS) seminar on new real-time African dust & storm nowcast system by my former PhD student (now Gates/FCDO-Cumulus PDRA) Kilian Hermes. Oct 12th, 13 UTC. Based on www.sciencedirect.com/science/arti...
sciencedirect.com
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George Monbiot @georgemonbiot.bsky.social · 31/08/2026
It's not often you can pinpoint real, positive change a journalist has caused. But as Turkmeni sources state, @dpcarrington.bsky.social's persistent and probing coverage of this issue has been critical to a change of policy, with massive implications. Big congrats www.theguardian.com/environment/...
theguardian.com
‘Breakthrough’ as Turkmenistan starts fixing ‘mindboggling’ methane mega-leaks
Secretive state begins repairs on ageing facilities after being revealed as worst country for leaks of potent greenhouse gas
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