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Frederik Hoedeman

@fredhoedeman.bsky.social
2.2K followers 2.3K following 426 posts

Advisor Public and Active Mobility at Copenhagen City

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Frederik Hoedeman @fredhoedeman.bsky.social · 7h
🚌 Diskussionen om bussers sikkerhed fortsætter- også i Norge. Bekymringen er om en bus vil kunne beholde sin funktionalitet, hvis producenter og leverandører i den digitale verdikæde, bussen er afhængig af for at fungere, en dag står på modsat side af Norge i en tilspidset geopolitisk situation.
its-norway.no
ITS Norway mener: Et SIM-kort fra eller til løser ikke sikkerhetsutfordringen - ITS Norway
Av Hanne Nettum Breivik, ITS Norway og Arild Tjomsland, USN og Lion Cage prosjektetFoto: Ruter Dette er en lengre versjon...
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European Environment Agency @eea.europa.eu · 11h
Half of Europe's population was exposed to poor or worse ground-level ozone levels so far in 2026, as successive summer heatwaves drove up concentrations, according to new @CopernicusECMWF analysis. 🔗 atmosphere.copernicus.eu/air-quality/... #AirQuality #Ozone
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UCL Department of Geography @uclgeography.bsky.social · 17/06/2026
Congratulations to MSc Climate Change graduate Fangjingcheng Zhu, whose dissertation research has contributed to a new paper exploring how the Gulf Stream responded during an abrupt global cold snap nearly 13,000 years ago. Read the paper: tinyurl.com/ycy6ef77 The MSc: tinyurl.com/2zcta8uu
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British Antarctic Survey 🐧 @bas.ac.uk · 16/07/2026
As the Arctic warms, Greenland's meltwater could disrupt the North Atlantic Subpolar Gyre – a whirlpool of currents that form part of the ocean conveyor belt keeping our planet's climate stable. A slowdown could bring serious consequences for European weather – potentially within decades. 🧵2/4
A red research ship at sea on a sunny day with snowy mountains and clouds in the background.
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Dr Tom Harris @drtomharris.bsky.social · 10h
Everyone is watching the AMOC, but a much faster-responding tipping point is flickering off Europe’s coast: the Subpolar Gyre (SPG). Operating on a decadal timescale, modeling suggests an SPG shutdown could hit by the 2040s—decades before the AMOC. 🧵 [1/3] drtomharris.substack.com/p/the-engine...
drtomharris.substack.com
The Engine in the Shadow: Why the Subpolar Gyre is Europe’s Immediate Climate Wildcard
While attention fixates on an AMOC collapse, a faster-responding subpolar tipping element could trigger severe European weather shifts and ocean cascades as early as the 2040s.
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Lauri Myllyvirta @laurimyllyvirta.bsky.social · 9h
NEW from us: EU's CO2 fell 2% in H1 2026, behind the pace needed to meet 2030 targets, with a rise in gas-fired generation and insufficient clean energy growth driving up power sector emissions. Emission trends also show the need to electrify transport, buildings and industry.
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David Zipper @davidzipper.bsky.social · 26/09/2026
Is Waymo really the "missing middle" of urban transportation? Or is that just Climate Week greenwashing? Looking forward to discussing with @wesmars.bsky.social
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David Zipper @davidzipper.bsky.social · 27/09/2026
I often see misleading stuff like this (from LinkedIn). Reminder: The price of a robotaxi trip reveals nothing about efficiciency or economics. It's hugely subsidized. Remember how cheap Uber and Lyft were a decade ago, back when they were private companies spending investor dollars?
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David Zipper @davidzipper.bsky.social · 29/09/2026
"E-bike adopters reduced travel costs by 12% and increased physical activity by 14%." doi.org/10.1016/j.ur...
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Daniel @daniel12345.bsky.social · 29/09/2026
I agree that we focus to much on physically building stuff But for example zf has the same regulatory approval as Momenta
urban-transport-magazine.com
Level 4 autonomous driving: ZF receives test authorisation for all of Germany - Urban Transport Magazine
ZF Mobility Solutions has received authorisation from the German Federal Motor Transport Authority (KBA) to test a Level 4 system for autonomous driving (AD) on public roads throughout Germany. Previo...
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Andrew Lawton @andrewlawton.bsky.social · 29/09/2026
Healthy ageing is ..."inextricably linked to the quality of the environments in which people live, such as whether they have access to green space, social connection, public transport, housing and employment."
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Yonah Freemark @yonahfreemark.com · 23h
617 days into his 2nd term, Trump's Department of Transportation has *still* not approved a single new transit project for full funding. The problems I highlighted in March—how this lack of funding only makes projects cost more & delays completion—have only worsened www.urban.org/urban-wire/r...
There have been no approvals for new transit projects in the entire 2nd Trump Administration. This graph, produced in March 2026, remains accurate now, in September 2026.
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The Irish Times @irishtimes.com · 13h
European Commission to put Ireland’s poor climate action record under scrutiny
irishtimes.com
European Commission to put Ireland’s poor climate action record under scrutiny
Climate commissioner Wopke Hoekstra says emission reduction targets must be taken very seriously
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Australian Antarctic Program Partnership @antarctic.bsky.social · 13h
🌊 Antarctic winter sea ice at 3rd-lowest level on record. “How sensitive is the global climate system to this loss of sea ice? We're still working to put numbers on that. But the system is changing faster than we are understanding it.” — Will Hobbs @utas.edu.au ▶️ www.theguardian.com/world/2026/s...
theguardian.com
Antarctic winter sea ice falls to third-lowest level on record as scientists warn of ‘now problem’
Coverage levels fall a million square kilometres short of the long-term average, with global heating likely driving losses
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Environment Institute - Adelaide University @adelaideuni-ei.bsky.social · 12h
A new project will create a practical guide to minimise psychological distress associated with climate change-related loss. The ‘Climate, Heritage and Mental Health Project’ will examine impacts of climate-related heritage loss, and develop interventions, resources and policy recommendations.
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Paul (parking reform) Barter @paulbarter.bsky.social · 15h
What is parking for?
Slide with text: heading - What is parking for? 

Car parking helps accessibility to an area 
But only by car: which is spatially and economically very inefficient

Instead aim for multi-modal accessibility
This sometimes means reducing parking

Images: 1 a shopping centre in Auckland surrounded by surface parking. 
2. the centre of Shibuya in Tokyo showing an elevated Yamanote Line train and numerous people crossing the street.
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Brian Gentles @briangentles.bsky.social · 13h
Here's Ireland, we're completely fucked
Chart from the Central Statistics Office showing the metered electricity consumption of data centers in Ireland from 2015 and 2025
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Timmons Roberts @timmonsroberts.bsky.social · 16h
Wow great important reporting. “They’re just trying to see who they can ensnare in this, even if their connections are incredibly tangential.”
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Noel Healy @drnoelhealy.bsky.social · 25/09/2026
The assault on US universities didn't start in 2025. Our new paper traces the decades of corporate capture that made it possible, and why climate research is a primary target. Open access: www.sciencedirect.com/science/arti...
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Melaine Le Roy @subfossilguy.bsky.social · 29/09/2026
Glacier Carré (La Meije) 2008 | 2018 | 2026 The iconic ice patch punctuating La Meije (3983 m) south face and its normal route (3600-3780 m) could not resist the insane 2026 summer! 😪 Our cryospheric heritage is literally being destroyed before our very eyes! 🧊🔥 📷 PNE and Félix de Montety
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Marcel Dirsus @marceldirsus.com · 29/09/2026
My favourite chart this year:
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Giulio Mattioli @giuliomattioli.bsky.social · 29/09/2026
Interesting new details on what went on behind the scenes politico.eu/article/comm...
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PIK_climate @pik-potsdam.bsky.social · 29/09/2026
“There is a certain threshold when there is no more stopping the total breakdown of the AMOC.” PIK’s @rahmstorf.bsky.social explains how global warming could weaken the Atlantic Meridional Overturning Circulation AMOC by adding more freshwater to the North Atlantic. www.youtube.com/watch?v=sNOS...
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Meredith Glaser @cyclingprofessor.bsky.social · 27/09/2026
BREAKING 📣 For several days, a peaceful protest took place in the morning, after a young child was killed by a car driver. The child was riding his bike to school, the father with him. The grieving community came together with hundreds of people, cyclist or not, creating a 3km long human bike lane.
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Hans Olav Hygen @hohygen.bsky.social · 28/09/2026
www.nrk.no/artikkel/sva...
nrk.no
Svalbards isbreer forsvinner i rekordfart
Ti breer har trukket helt opp på land de siste to årene.
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Frederik Hoedeman @fredhoedeman.bsky.social · 27/09/2026
Answer to Dutch PM question on the risk of dismantling AMOC monitoring: "The government is examining how AMOC monitoring can be ensured, whether at the national level or within an EU context. Discussions on this matter are currently underway between various government bodies and research institutes"
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James Bullock @jmbecologist.bsky.social · 25/09/2026
We do people constantly frame the security report about ecological collapse as being about climate change? It is misleading and ignores the fact of biodiversity loss & ecosystem degradation as an existential threat in its own right www.theguardian.com/environment/...
theguardian.com
Why is the UK’s suppressed climate national security report significant?
Warnings about the catastrophic effects of vital ecosystems collapsing were not published under previous prime minister
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Jan Christoph Steckel @jansteckel.bsky.social · 24/09/2026
Finding: households hit by an above-median increase in their electricity instalments became 7.5 percentage points more likely to support the AfD — despite a multi-billion-euro government relief package. @cesifo.org Working paper No. 12887: papers.ssrn.com/sol3/papers....
papers.ssrn.com
The Political Consequences of Energy Price Shocks: Evidence from Germany
We study the political consequences of Germany's 2022–2023 electricity price increases using four waves of original panel data. Identification exploits the
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Hans Olav Hygen @hohygen.bsky.social · 25/09/2026
Dommedagsprofeten Hygen er ute i media igjen, men dessverre bygger fremtidsutsiktene på godt etablert vitenskap, noe som gjør det mer skremmende. www.tv2.no/nyheter/nye-...
tv2.no
Nye bilder viser hva som er på vei: – Blir en global hendelse
Ekspertene blir skremt – og tror ikke vi kan se for oss hvor ille det kan bli.
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Dr Paul Dorfman @drpauldorfman.bsky.social · 25/09/2026
Why is the UK’s suppressed #climate national security report significant? Report warns of food shortages, conflicts, mass migration and other threats to the UK’s national security, including going as far as the risk of nuclear war or the breakdown of society. www.theguardian.com/environment/...
theguardian.com
Why is the UK’s suppressed climate national security report significant?
Warnings about the catastrophic effects of vital ecosystems collapsing were not published under previous prime minister
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chrisjardine.energy @chrisjardineenergy.bsky.social · 25/09/2026
Why is electrification so powerful? EVs use around ¼–⅓ as much energy as petrol/diesel cars. Heat pumps can deliver 3–4× as much heat as gas boilers for the same energy input. So we get cleaner electricity AND use much less energy. Short primer with Prof Nick Eyre.
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Mika Rantanen @mikarantane.bsky.social · 25/09/2026
New paper by @daanvandenbroek.com and me just published in @rmets.org Weather: "The 2026 cold wave brought northern Fennoscandia its coldest 2-week period since 1987" rmets.onlinelibrary.wiley.com/doi/10.1002/... Check out the brilliant thread by Daan below 👇
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Rob Larter @polarrobs.bsky.social · 25/09/2026
The scariest aspect of this is that we may not know we've passed the tipping point until it has already happened. @rahmstorf.bsky.social in 2024: "Nothing dramatic happens at the tipping point. That just means AMOC is then doomed and it will slowly die, but that process could take 50 to 100 years."
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Rob Larter @polarrobs.bsky.social · 25/09/2026
It appears that Antarctic sea-ice may already have reached its maximum extent this year at 17.6 million km². If this turns out to be the case it has occurred earlier than usual and is the third lowest maximum on record. Graphic by @zacklabe.com zacklabe.com/antarctic-se...
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Frederik Hoedeman @fredhoedeman.bsky.social · 25/09/2026
👏French research on AMOC alters mean estimates and uncertainty of projection: "The projected decline by 2100 shifts from approx. 33 ± 37% to nearly 51 ± 8%. These changes in estimation are crucial, as they can impact our ability to anticipate future changes and adapt to them more effectively".
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New Scientist @newscientist.com · 24/09/2026
Europe faces incredibly harsh winters, unrelenting droughts if the AMOC ocean current collapses. An ambitious early warning system plans to tell us precisely when this potential catastrophe could become a reality. www.newscientist.com/article/2588...
newscientist.com
The collapse of the AMOC would be catastrophic. How will we know when it's coming? | New Scientist
Europe faces incredibly harsh winters and unrelenting droughts if the vital AMOC ocean current fails – but when disaster will strike and how bad it will be remains uncertain. Now there is an ambitious...
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Patrik Oksanen @patrikoksanen.bsky.social · 25/09/2026
Sabotagevågen vi ser nu är inte ny, Nato varnade redan 2024 - något jag skriver om i Rysslands hemliga krig mot Sverige. En bok att läsa om du vill förstå vad som nu sker. volanteshop.com/bok/ryssland...
volanteshop.com
Rysslands hemliga krig mot Sverige – Volantes webshop
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Eoghan Daltun 🌍 @irishrainforest.bsky.social · 25/09/2026
A micro nature reserve on a Dublin street. Only the tree was planted, everything else seeded in naturally once the railing went up. Imagine all the invertebrate life going on in there. Above all, nature just needs space to do its thing.
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Kees van der Leun @sustainable2050.bsky.social · 24/09/2026
Dutch Ministry of Defence has many billions to spend now, and buys 3D metal printers in... China. Dutch industry is shocked.
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Krister Isaksson @kristerisaksson.bsky.social · 25/09/2026
Cykla mot enkelriktat? Självklart, i Finland och massor av andra länder. I Sverige säger Transportstyrelsen nej det går inte.
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Molly Lempriere @mollylempriere.carbonbrief.org · 24/09/2026
As petrol and diesel prices surge in the wake of the continued attacks on Russian refineries and escalating tensions in the Middle East, it is now nine times cheaper to drive an EV than a diesel car in the UK, This means EV drivers save ~£80 when "filling up" www.carbonbrief.org/analysis-evs...
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Federica Genovese @fgenovese.bsky.social · 24/09/2026
Important public opinion patterns described here by Steve. The fragmented elite-level consensus on climate change and aggressive anti-net zero campaign on the (far) right is starting to show in UK public polls. Once again evidence that elites matter, leadership is lacking and apathy is a tragedy.
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laurentfranckx.bsky.social @laurentfranckx.bsky.social · 23/09/2026
Americans: "operate driverless robotaxis in several metropolitan areas" Europeans: "nah, that works only in cities with checkerboard street patterns, not in organically grown cities with medieval centres" Zagreb: "hold my beer" insideevs.com/news/808004/...
insideevs.com
Europe's First Truly Driverless Robotaxi Just Started Rides In Croatia
A little known Croatian startup backed by Rimac is leading the way for robotaxis in Europe, with help from a Chinese AV company.
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Alessandro Rigolon @alerigolon.bsky.social · 20/09/2026
Re: “people don’t bike in the winter”, let’s think about places where people bike more: the Netherlands, Denmark, Berlin, Paris. Not great weather Places in Southern Europe with great weather and no winter (Italy, Greece) don’t have large biking numbers It’s not the weather. It’s infrastructure
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Alessandro Rigolon @alerigolon.bsky.social · 30/12/2025
And here's a peer-reviewed study on a similar topic, not specifically focused on Waymo www.nature.com/articles/s41...
nature.com
A matched case-control analysis of autonomous vs human-driven vehicle accidents - Nature Communications
Through a matched case-control analysis this study reveals accident risk disparities between autonomous and human-driven vehicles. It suggests that accidents of vehicles equipped with Advanced Driving...
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Alessandro Rigolon @alerigolon.bsky.social · 30/12/2025
Interesting data (from Waymo) showing that robotaxis are significantly safer than the average human driver. This is likely because they respect traffic rules. An NYT op-ed by a neurosurgeon calls for a broader adoption as a public health measure. Thoughts? www.nytimes.com/2025/12/02/o...
Diagram showing the likelihood of crashes in Waymo vs human driver
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David Zipper @davidzipper.bsky.social · 13/02/2025
Waymo recently ran a similar promotion in the Bay Area (I wrote about it ⤵️). In reality, cities full of robotaxis would be a transit disaster: 🔹 More congestion, slowing down buses 🔹 Blocked transit lines (happens all the time in SF) 🔹 Inequitable transport networks (robotaxis cost $$) 2/2
bloomberg.com
Robotaxis Are No Friend of Public Transportation
AV companies like Waymo are promoting the idea that driverless technology can complement transit service. Recent ride-hailing history suggests otherwise.
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David Zipper @davidzipper.bsky.social · 13/02/2025
In LA, Waymo is offering a $3 credit (for a few weeks) to those hailing a robotaxi to/from select transit stops. This is marketing that borders on gaslighting. The company is trying to convince cities that robotaxis help transit, when they actually undermine it. 1/2
cities-today.com
Waymo offers transit credit programme in LA - Cities Today
Waymo is introducing a transit credit pilot programme to support public transport in Los Angeles and expand access to zero-emission ride-hailing.
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Equality and Human Rights Commission @equalityhumanright.bsky.social · 24/09/2026
Many disabled and older people face significant barriers to accessing key public services, such as public transport. Our strategic plan includes action to address these barriers, so everyone can participate in society. Read our strategic plan here: ow.ly/tua350ZQCIa
Man and a woman standing arm in arm waiting for a bus,  the woman is using a crutch.  Text promotes the Equality and Human Rights Commission's strategic plan.
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Fiona Harvey @fionaharvey.bsky.social · 23/09/2026
Climate and nature collapse threaten national security of govts across world, UK tells UN based on spy chiefs’ warnings www.theguardian.com/environment/...
theguardian.com
UK shares findings of damning climate crisis national security report suppressed under Starmer
El Niño poses critical threat to nations’ defences, says Ed Miliband in presentation to global foreign ministers
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