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David Marshall

@dmarshallocean.bsky.social
1.1K followers 721 following 359 posts

physical oceanographer, climate scientist, advocate for blue skies research, educator, brompton rider, aspiring jazz musician, european 🇬🇧🇪🇺🇮🇪

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Reposted by David Marshall
Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 22/01/2026
Felix Klein lectured “On Hilbert’s first note on the foundations of physics" at the Mathematical Society of Göttingen #OTD in 1918. He included excerpts from letters in which he and Hilbert give priority to Emmy Noether’s results on conservation of energy in general relativity. (1/n) 🧪 ⚛️ 👩‍🔬
Black and white photograph of Emmy Noether. She is standing just behind an ornate chair, wearing a white striped blouse with puffy shoulders, a fluffy bow at her neck, and a heavy long skirt cinched with a belt. Her dark hair is pulled back and she is looking a bit to the photographer's right.
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David Marshall @dmarshallocean.bsky.social · 29/11/2025
About to play a set at the Market Tap (in the Covered Market) with Short Notice Jazz. Great venue!
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David Marshall @dmarshallocean.bsky.social · 01/11/2025
30s would have been too much, getting in the way of the talks. The large numbers counting down were enough. Only one person ever dared continue for an extended period beyond the music, and the audience made their displeasure clear!
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David Marshall @dmarshallocean.bsky.social · 31/10/2025
That’s my timer :) it was 5 seconds of music. Stephanie Waterman timed her talk perfectly to dance to the music 🕺
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National Centre for Atmospheric Science @ncas-uk.bsky.social · 19/09/2025
Hello from Cambridge! We've just finished our Climate Modelling Summer School. It is an exciting two-week programme of lectures and practical work on climate models. Thank you to everyone who came along to learn and network with our experts and with like-minded peers!
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David Marshall @dmarshallocean.bsky.social · 09/08/2025
🤣
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David Marshall @dmarshallocean.bsky.social · 09/08/2025
Agree with all of this, except we had a positive experience with bikes on trains - guess we got lucky … The lack of wind turbines was particularly striking despite a persistent and welcome tailwind!
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David Ho @davidho.bsky.social · 08/08/2025
My impression of Ireland after cycling around for a few days is that it’s a beautiful country with really lovely people. It’s too bad about the smell of cow poop and car exhaust. Also, @hannahdaly.ie and her Dad are awesome.
Impressions of Ireland 

* Beautiful country
* Lovely people (really, the best)
* Too many cars on narrow lanes going too fast, and not enough of them are EVs
* A few drivers slow down to pass; some even give a whole lane (which is 1.5 m and the law)
* Too many cows 
* Could have more vegetarian food
* Well signed cycle ways on roads with 100 km/h speed limit and no shoulder 😬
* Windy, yet not many wind turbines.
* Challenging to take bikes on trains
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David Marshall @dmarshallocean.bsky.social · 09/08/2025
Nice chance meeting on the ferry from Dublin-Holyhead this morning after both bike touring in Ireland!
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Reposted by David Marshall
David Ho @davidho.bsky.social · 09/08/2025
@dmarshallocean.bsky.social is a professor of climate physics at @ox.ac.uk. He studies how things that happen on small scales (turbulence and eddies) affect the large scale (ocean circulation). In our parlance, he studies geophysical fluid dynamics.
A smiling man wearing a dark sweater stands outdoors near a body of water, with a cityscape and cloudy sky in the background. The image is in black and white.
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Gavin Schmidt @climateofgavin.bsky.social · 10/07/2025
I recommend checking out the profiles and records of the people that went through this program while you still can: cpo.noaa.gov/fellowships/ They are a testament to how a small amount of federal funding can seed a tremendous increase in knowledge and understanding.
cpo.noaa.gov
C&GC Fellowship - Climate Program Office
NOAA Climate and Global Change Postdoctoral Fellowship Program Growing the next generation of climate experts The NOAA Climate and Global Change (C&GC) Postdoctoral Fellowship Program aims to help cre...
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Prof Christina Pagel @chrischirp.bsky.social · 08/07/2025
A new editorial by me on the global implications of Trump's war on science - apart from the devastating cuts to global health, we must urgently build a more distributed science infrastructure. journals.sagepub.com/doi/full/10....
journals.sagepub.com
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
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ClimateBook @climatebook.bsky.social · 01/07/2025
And remember, GFDL is whee Suki Manabe did his Nobel-prize winning work establishing the physics of CO2-induced global warming. It is a gem in the crown of US federal laboratories, and now it is about to be irretrievably tossed on the trash-heap.
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Dr. Jeff Masters @drjeffmasters.bsky.social · 01/07/2025
Excellent post by @dinahvp.bsky.social‬ on the plan to devastate NOAA research, with quotes from @franklinjamesl.bsky.social @wxmanms1.bsky.social. "Only a small fraction of NOAA Research would remain and be transferred to the NWS, including portions of the weather, tornado and technology research."
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David Marshall @dmarshallocean.bsky.social · 20/06/2025
Hmm … my personal experience is that my highest quality research (I appreciate highly subjective!) has been the hardest to fund. Meanwhile I’ve seen recent calls for large programmes of dubious quality.
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Lily Dove @solilyquy.bsky.social · 31/05/2025
I can confidently say that I would not still be doing physical oceanography without MPOWIR. The termination of MPOWIR's NSF grant is soul-crushing to me. Let's celebrate the success of this 20 year program and get to work continuing its legacy. 🌊 ⛴️ 🧪 www.advancejournal.org/post/3227-ce...
advancejournal.org
Celebrating 20 Years of MPOWIR—A Community Driven Effort | Published by ADVANCE Journal
This blog post is part of ADVANCE Journal's blog series on the impacts of NSF Grants and their terminations.
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Prof Christina Pagel @chrischirp.bsky.social · 22/05/2025
I can't overstate how scary this is. If the state did this to pretty much *any* UK university, it would go bankrupt
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David Marshall @dmarshallocean.bsky.social · 08/05/2025
Looking forward to another season of Grand Challenge Seminars, organised by our @oxfordenvres.bsky.social and DTC students. Kicking off today with Tightening the Green Belt: Labour, Housing and Biodiversity.
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Doctoral Training Partnership in Environmental Research @oxfordenvres.bsky.social · 08/05/2025
Grand Challenges 2025 commence this evening, May 8th @ 5pm with a discussion around the conflict (or not?) between housing a growing population and protecting biodiversity. The free public seminars are followed by drinks and nibbles & organised by DTC first year PhD students. bit.ly/4jvMLDF
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Reposted by David Marshall
David Ho @davidho.bsky.social · 02/05/2025
More about threats to NOAA/GFDL.
propublica.org
White House Proposal Could Gut Climate Modeling the World Depends On
Potential funding cuts for NOAA and its research partners threaten irreparable harm not only to climate research but to American safety, competitiveness, and national security.
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David Marshall @dmarshallocean.bsky.social · 26/04/2025
Keys today
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David Marshall @dmarshallocean.bsky.social · 26/04/2025
About to play a set at the Tap Market with Short Notice Jazz. Wonderful setting in the centre of the Oxford Covered Market with excellent beer on tap from the Tap Social.
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Physics Today @physicstoday.aip.org · 25/04/2025
A science communicator launched an effort to pair artists with scientists whose jobs were eliminated or whose research funding was halted by the Trump administration. The result? Powerful portraits of researchers and their work. ⚛️🧪 doi.org/10.1063/pt.f...
doi.org
Portraits of dismissed scientists personalize US government cuts to science
A hurricane researcher. An invasive-insect entomologist. An e-cigarette toxicologist. A biomedical librarian. Those are some of the people included in Silenced Science Stories, a visual storytelling p...
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Adam Sobel @adamsobel.bsky.social · 25/04/2025
They simply want to cancel an entire field of science because they don't like the answers it has come up with. It's like the burning of the library of Alexandria. www.propublica.org/article/trum...
propublica.org
White House Proposal Could Gut Climate Modeling the World Depends On
Potential funding cuts for NOAA and its research partners threaten irreparable harm not only to climate research but to American safety, competitiveness, and national security.
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Mehdi Hasan @mehdirhasan.bsky.social · 29/03/2025
For years conservatives and some liberals complained incessantly about ‘cancel culture’ and the lack of ‘free speech’ on campuses. None of that stuff comes even close to what the right is now doing in power, in terms of the open bullying and pressuring of colleges and censoring of curricula.
thecrimson.com
Harvard Dismisses Leaders of Center for Middle Eastern Studies | News | The Harvard Crimson
Interim Harvard Dean of Social Science David M. Cutler ’87 dismissed the director of the Center for Middle Eastern Studies, professor of Turkish Studies Cemal Kafadar, and its associate director, Hist...
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Helen Czerski @helenczerski.bsky.social · 29/03/2025
A chilling thought: "So if the aloof trustees of Harvard, Princeton, Yale et al think that their august institutions lie beyond his reach, perhaps they should understand that Trump looks on them much as Henry VIII looked on the rich monasteries of his heyday." www.theguardian.com/us-news/2025...
theguardian.com
When the physicists need burner phones, that’s when you know America’s changed | John Naughton
US academics, fearing persecution by their own government, are becoming ideological refugees. Europe, and Britain, must offer them sanctuary
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Alexandra Witze @alexwitze.bsky.social · 27/03/2025
We polled Nature readers to ask if they were thinking of leaving the US for jobs abroad. Three-quarters of them (who said they were US-based scientists) said yes. 🧪 www.nature.com/articles/d41...
nature.com
75% of US scientists who answered Nature poll consider leaving
More than 1,600 readers answered our poll; many said they were looking for jobs in Europe and Canada.
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Prof Christina Pagel @chrischirp.bsky.social · 28/03/2025
Colleagues are cancelling their US work trips. I worry that international colleagues in the US are at risk if they collaborate with us on certain topics. I've written a new post about the increasing danger of being a foreign scientist in the US. christinapagel.substack.com/p/trumps-att...
christinapagel.substack.com
Trump's attacks on universities get ever darker, with the shadows reaching our shores
The US has become a hostile and authoritarian state to foreign scientists and is choosing ideology over science.
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Jonathan Lilly @jmlilly.bsky.social · 20/03/2025
Rare opportunity.... a permanent observational oceanography position on offer at GEOMAR, one of the world's leading oceanographic centers www.geomar.de/en/karriere/...
geomar.de
Scientist (m/f/d) in Observational Physical Oceanography
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Michael E. Mann @michaelemann.bsky.social · 20/03/2025
"Britain Issues Travel Warning for U.S." www.newsweek.com/britain-issu...
newsweek.com
Britain issues travel warning for US
The change comes amid President Donald Trump's large-scale crackdown on illegal immigration.
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David Marshall @dmarshallocean.bsky.social · 20/03/2025
Personally, I would not risk it ... nor would I want to go to the USA right now.
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David Marshall @dmarshallocean.bsky.social · 19/03/2025
Yes, but …
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David Marshall @dmarshallocean.bsky.social · 19/03/2025
Why would you want to?
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David Marshall @dmarshallocean.bsky.social · 17/03/2025
“International travel to the United States is expected to slide by 5 percent this year” Only 5 percent? I can’t imagine why anyone would want to travel there right now!
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Adriana Guatame-García @adriguatame.bsky.social · 06/03/2025
A friend included this anti-acknowledgement section on her PhD thesis. She also added the proposition: “Systematic bullying and undermining of girls and women in STEM starts early on and is the reason why they do not stay in science and related fields.” Absurd we still need to go through this 🧪👩‍🔬
There have been people less than helpful in my journey here. I wanted to acknowledge those too, bc I know I am not unique in this experience.
No thank you to the physics study assoc that made me sing songs about how women couldn't study physics without sleeping with the professor, the day I stepped into university life. No thank you to the 5th year physics student that decided to assign me a stripper name within the first minute of meeting me in the physics coffee corner in my first year. No thank you to the technician that was responsible for onboarding me on the use of the cluster in my third year who raised his eyebrows and asked me if that meant I was some sort of computer girl. No thank you to the senior researcher that sent me utterly inappropriate texts after a conference, then proceeded to apologise months later by telling me they had not been meant for me anyway so no hard feelings remain hopefully And no thank you to him for attending every conference I've been to since. No thank you to the people who told me that it was surprising that I was doing a PhD since I was a girl. No thank you to the man who mistook me for a coffee lady at a conference, and after having to correct him two times that I did not work there, responded with you should consider it. No thank you to the researcher that asked me what I was wearing underneath my outfit during a conference. No thank you to the physicist who declared to a room full of other physicists that biologists don't know how to design an experiment. No thank you to the people who have called me scary instead of strong and intimidating instead of intelligent.
And finally, no thank you to the exec board of the TU Delft, whose knee-jerk reaction to being held up a mirror about the social safety at the university, was to sue the party holding up the mirror instead of looking at the problems they highlighted.
... You have made me feel like I do not belong in science & I cannot forgive you for that.
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David Marshall @dmarshallocean.bsky.social · 06/03/2025
... While we realize that this initiative is absurd, we feel it adequately reflects the current absurd scientific situation in some countries."
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David Marshall @dmarshallocean.bsky.social · 06/03/2025
"As a reaction to this disturbing trend, the authors have decided to put together this review, which cites all the ar- ticles published in FPL within the last 2 years. This article is thus expected to considerably increase the impact fac- tor of this journal and its ranking.
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David Marshall @dmarshallocean.bsky.social · 06/03/2025
One of my favourites on IFs: karger.com/fpl/article-...
karger.com
Reaction of Folia Phoniatrica et Logopaedica on the Current Trend of Impact Factor Measures
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David Marshall @dmarshallocean.bsky.social · 06/03/2025
IFs are a particularly dumb metric and can lead to undesirable behaviour, e.g., Climate Dynamics used to leave papers in the "to appear" section for well over a year while collecting citations, doubtless to enhance their IF.
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Zack Labe @zacklabe.com · 05/03/2025
Hi - I'd like to share this story of what is happening at NOAA GFDL, where some of my colleagues and I worked until the mass firings at NOAA last week. "...the birthplace of weather and climate forecasting"
science.org
NOAA firings hit the birthplace of weather and climate forecasting
Dismissed researchers were improving severe weather predictions
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David Marshall @dmarshallocean.bsky.social · 04/03/2025
Forgot to tag in @climateuea.bsky.social
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David Marshall @dmarshallocean.bsky.social · 04/03/2025
Wonderful to welcome Prof. Karen Heywood to deliver the annual @ox.ac.uk - @metoffice.bsky.social Houghton Lecture at @oxfordphysics.bsky.social this afternoon, a great choice!
Karen Heywood Houghton Lecture
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Regina R Rodrigues @rrrocean.bsky.social · 28/02/2025
I have been receiving the sad news about massive NOAA firing. I cannot explain how important NOAA is for science globally. The data and model outputs generated by NOAA globally allow researchers from countries that don’t have the funding or capability to develop those to do their own science. 🌊🧵
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Ed Davey @eddavey.libdems.org.uk · 19/02/2025
Calling Zelensky a “Dictator” must be where the line is drawn. It is my sincere hope that the whole political spectrum in the United Kingdom will speak with one voice in opposition to Trump’s lies.
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David Marshall @dmarshallocean.bsky.social · 20/02/2025
Particularly proud of transferring Youri Tielemans into my team for double game week 25 given that he scored last night! PS: Don't ask about the team name
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David Marshall @dmarshallocean.bsky.social · 20/02/2025
In between the horrors occurring in the US and beyond, and the usual teaching/graduate admissions at this time of year, I've been enjoying a surprisingly good cup run in @officialfpl.bsky.social, entering in the round of 8.4M and now headed to the round of 8192 after 10 wins and considerable luck!
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David Marshall @dmarshallocean.bsky.social · 09/02/2025
“Fun”, not run
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David Marshall @dmarshallocean.bsky.social · 09/02/2025
I don’t mind changing in Cologne. They do have a habit of rerouting trains into another of the Cologne stations, but that’s not a problem with a Brompton. It’s a run city to ride around in the event of a delay.
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David Marshall @dmarshallocean.bsky.social · 09/02/2025
Yep, that’s normal. The timetable is almost meaningless on DB!
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David Marshall @dmarshallocean.bsky.social · 09/02/2025
Did that exact same journey last year with my Brompton. Arrived 2 hours late, as expected … Hope you are not on the last train of the day?
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