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David Marshall

@dmarshallocean.bsky.social

physical oceanographer, climate scientist, advocate for blue skies research, educator, brompton rider, aspiring jazz musician, european ๐Ÿ‡ฌ๐Ÿ‡ง๐Ÿ‡ช๐Ÿ‡บ๐Ÿ‡ฎ๐Ÿ‡ช

885 Followers  |  680 Following  |  356 Posts  |  Joined: 14.11.2024  |  2.1509

Latest posts by dmarshallocean.bsky.social on Bluesky

๐Ÿคฃ

09.08.2025 14:03 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Agree with all of this, except we had a positive experience with bikes on trains - guess we got lucky โ€ฆ The lack of wind turbines was particularly striking despite a persistent and welcome tailwind!

09.08.2025 13:06 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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 ๐Ÿ˜ฌ
* Windy, yet not many wind turbines.
* Challenging to take bikes on trains

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 ๐Ÿ˜ฌ * Windy, yet not many wind turbines. * Challenging to take bikes on trains

My impression of Ireland after cycling around for a few days is that itโ€™s a beautiful country with really lovely people. Itโ€™s too bad about the smell of cow poop and car exhaust.

Also, @hannahdaly.ie and her Dad are awesome.

08.08.2025 18:12 โ€” ๐Ÿ‘ 231    ๐Ÿ” 20    ๐Ÿ’ฌ 29    ๐Ÿ“Œ 2
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Nice chance meeting on the ferry from Dublin-Holyhead this morning after both bike touring in Ireland!

09.08.2025 12:58 โ€” ๐Ÿ‘ 13    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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.

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.

@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.

09.08.2025 07:28 โ€” ๐Ÿ‘ 59    ๐Ÿ” 6    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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...

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.

10.07.2025 00:18 โ€” ๐Ÿ‘ 42    ๐Ÿ” 7    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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Sage Journals: Discover world-class research Subscription and open access journals from Sage, the world's leading independent academic publisher.

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....

08.07.2025 08:32 โ€” ๐Ÿ‘ 132    ๐Ÿ” 62    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 4

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.

01.07.2025 19:56 โ€” ๐Ÿ‘ 5    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Excellent post by @dinahvp.bsky.socialโ€ฌ 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."

01.07.2025 19:10 โ€” ๐Ÿ‘ 31    ๐Ÿ” 15    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Hmm โ€ฆ my personal experience is that my highest quality research (I appreciate highly subjective!) has been the hardest to fund. Meanwhile Iโ€™ve seen recent calls for large programmes of dubious quality.

20.06.2025 08:15 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Celebrating 20 Years of MPOWIRโ€”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.

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. ๐ŸŒŠ โ›ด๏ธ ๐Ÿงช

www.advancejournal.org/post/3227-ce...

31.05.2025 18:37 โ€” ๐Ÿ‘ 25    ๐Ÿ” 8    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

I can't overstate how scary this is.

If the state did this to pretty much *any* UK university, it would go bankrupt

22.05.2025 18:38 โ€” ๐Ÿ‘ 273    ๐Ÿ” 88    ๐Ÿ’ฌ 15    ๐Ÿ“Œ 2
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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.

08.05.2025 16:13 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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

08.05.2025 09:26 โ€” ๐Ÿ‘ 3    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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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.

More about threats to NOAA/GFDL.

02.05.2025 07:38 โ€” ๐Ÿ‘ 23    ๐Ÿ” 17    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Keys today

26.04.2025 18:58 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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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.

26.04.2025 17:55 โ€” ๐Ÿ‘ 8    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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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...

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. โš›๏ธ๐Ÿงช
doi.org/10.1063/pt.f...

25.04.2025 13:46 โ€” ๐Ÿ‘ 151    ๐Ÿ” 68    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2
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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.

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...

25.04.2025 00:48 โ€” ๐Ÿ‘ 71    ๐Ÿ” 32    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 2
Harvard Dismisses Leaders of Center for Middle Eastern Studies | News | The Harvard Crimson Interim Harvard Dean of Social Science David M. Cutler โ€™87 dismissed the director of the Center for Middle Eastern Studies, professor of Turkish Studies Cemal Kafadar, and its associate director, Hist...

For years conservatives and some liberals complained incessantly about โ€˜cancel cultureโ€™ and the lack of โ€˜free speechโ€™ 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.

29.03.2025 02:23 โ€” ๐Ÿ‘ 5571    ๐Ÿ” 1442    ๐Ÿ’ฌ 156    ๐Ÿ“Œ 63
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When the physicists need burner phones, thatโ€™s when you know Americaโ€™s changed | John Naughton US academics, fearing persecution by their own government, are becoming ideological refugees. Europe, and Britain, must offer them sanctuary

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...

29.03.2025 21:05 โ€” ๐Ÿ‘ 105    ๐Ÿ” 32    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 2
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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.

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. ๐Ÿงช

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

27.03.2025 14:19 โ€” ๐Ÿ‘ 2361    ๐Ÿ” 1079    ๐Ÿ’ฌ 68    ๐Ÿ“Œ 219
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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.

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...

28.03.2025 19:36 โ€” ๐Ÿ‘ 1460    ๐Ÿ” 574    ๐Ÿ’ฌ 32    ๐Ÿ“Œ 24
Scientist (m/f/d) in Observational Physical Oceanography

Rare opportunity.... a permanent observational oceanography position on offer at GEOMAR, one of the world's leading oceanographic centers

www.geomar.de/en/karriere/...

20.03.2025 22:09 โ€” ๐Ÿ‘ 17    ๐Ÿ” 18    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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Britain issues travel warning for US The change comes amid President Donald Trump's large-scale crackdown on illegal immigration.

"Britain Issues Travel Warning for U.S."
www.newsweek.com/britain-issu...

20.03.2025 22:12 โ€” ๐Ÿ‘ 188    ๐Ÿ” 67    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 4

Personally, I would not risk it ... nor would I want to go to the USA right now.

20.03.2025 12:07 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Yes, but โ€ฆ

19.03.2025 23:42 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Why would you want to?

19.03.2025 23:35 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

โ€œInternational travel to the United States is expected to slide by 5 percent this yearโ€

Only 5 percent? I canโ€™t imagine why anyone would want to travel there right now!

17.03.2025 14:29 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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.

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.

A friend included this anti-acknowledgement section on her PhD thesis. She also added the proposition: โ€œSystematic 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.โ€
Absurd we still need to go through this
๐Ÿงช๐Ÿ‘ฉโ€๐Ÿ”ฌ

06.03.2025 16:40 โ€” ๐Ÿ‘ 6613    ๐Ÿ” 2374    ๐Ÿ’ฌ 123    ๐Ÿ“Œ 337

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