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Marjolijn Haasnoot

@marjolijnhaasnoot.bsky.social
1.6K followers 400 following 21 posts

Climate adaptation, water and deltas 💧| Professor Deltares and Utrecht university | adaptation pathways | decisionmaking under deep uncertainty | LA IPCC AR6/7 | climate change🌡 | sea level rise 🌊

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Reposted by Marjolijn Haasnoot
Kefah Allush @kefahallush.bsky.social · 20/05/2026
Wat doen we als het water komt? Nieuw Nederland. Vanaf 24 mei, 20.20u op NPO 1
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Paul van de Vijver @paulvdvijver.bsky.social · 27/03/2026
#Zeespiegelstijging | In meeste #Delta’s is nog aanpassing mogelijk … voorlopig: www.deltares.nl/en/new-study... 💧Onderzoek naar toepasbare strategieën per delta, door oa @changing-shores.bsky.social @uugeo.bsky.social @marjolijnhaasnoot.bsky.social @deltares.bsky.social
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Faculty of Geosciences, Utrecht University @uugeo.bsky.social · 30/01/2026
Klimaatverandering: moeten en kunnen wij ons aanpassen? Vanaf 2 februari is er een nieuwe serie lezingen bij Studium Generale over hoe alles piept en kraakt onder de klimaatcrisis, met oa @marjolijnhaasnoot.bsky.social en Marc Bierkens @waterbier.bsky.social www.sg.uu.nl/series/gewoo...
Kaartenhuis
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IPCC @ipcc.bsky.social · 04/12/2025
The IPCC’s First Lead Author Meeting for AR7, is taking place in Paris this week. The French Minister for Europe and Foreign Affairs, Mr Jean-Noël Barrot welcomed around 600 authors from more than 100 countries to the Quai d’Orsay on Tuesday evening. bit.ly/4ir09cC
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Bob Kopp @bobkopp.net · 09/09/2025
Update on this thread: Thanks to the feedback on this thread, I realized the methodological problems with the Voortman and De Vos (2025) paper (which the New York Post heralded as "Rising-sea hysteria debunked") went deeper than I originally realized, and clearly necessitate retraction. 1/
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Glen Peters @glenpeters.bsky.social · 08/09/2025
Here is the starter pack you have all been waiting for: IPCC AR7 Scientists (the scientists that will write the next assessment report of the Intergovernmental Panel on Climate Change for the next few years) Thanks @soniaseneviratne.bsky.social bsky.app/starter-pack...
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Andreas Schmittner @andreasschmittner.bsky.social · 08/09/2025
Sea level projections from the 1990s were right. www.sciencedaily.com/releases/202...
sciencedaily.com
Satellites confirm 1990s sea-level predictions were shockingly accurate
Satellite data reveals sea-level rise has unfolded almost exactly as predicted by 1990s climate models, with one key underestimation: melting ice sheets. Researchers stress the importance of refining ...
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IPCC @ipcc.bsky.social · 18/08/2025
The #IPCC has announced the authors selected for its Seventh Assessment Report. 664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors. 🌍 51% from developing countries 🚺 46% women 🔗 bit.ly/AR7AuthorsPR
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Jeroen Haan @jeroenhaan.bsky.social · 19/06/2025
Klimaatraad: Nederland moet groots dromen over meeveranderen met klimaat nos.nl/l/2571762 Wetenschappelijke @klimaatraad.bsky.social met @marjolijnhaasnoot.bsky.social zegt: durf ruimte anders in te richten. @unievwaterschappen.bsky.social steunt deze oproep. unievanwaterschappen.nl/unie-van-wat...
nos.nl
Klimaatraad: Nederland moet groots dromen over meeveranderen met klimaat
Bij het bouwen van huizen, fabrieken of infrastructuur moet Nederland kijken of het ook geschikt is voor het klimaat van de komende honderd jaar.
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Paul van de Vijver @paulvdvijver.bsky.social · 06/06/2025
#Klimaat | Onderzoek @deltares.bsky.social voor prov. NH: combinatie van #Adaptatie (aanpassing) en #Mitigatie (tegengaan klimaatverandering) is essentieel 💧Rapp: publications.deltares.nl/11210678_001... @marjolijnhaasnoot.bsky.social @kraanwater.bsky.social 💧Artikel: www.deltares.nl/nieuws/klima...
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Faculty of Geosciences, Utrecht University @uugeo.bsky.social · 01/05/2025
“De gevolgen van klimaatverandering worden steeds complexer.” Maar @marjolijnhaasnoot.bsky.social blijft optimistisch. Wereldwijd is ze een van de weinige hoogleraren op het gebied van de klimaatadaptatie, m.n. in delta's. #Vroegevogels sprak met haar www.bnnvara.nl/vroegevogels... (vanaf 00:37:35)
Aerial photograph of a river delta
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Deltares @deltares.bsky.social · 19/03/2025
📢 New paper in Nature! New geological data gives more insight into rate and magnitude of global sea level rise following the last ice age. This is of great importance to understand the impact global warming has had on the ice caps and sea level rise. 🔗 www.deltares.nl/en/news/sea-...
deltares.nl
Sea level rise after the last ice age: more knowledge | Deltares
The paper, ‘Global sea-level rise in the early Holocene revealed from North Sea peats’, was published in leading scientific journal Nature today.
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Clara Jeffery @clarajeffery.bsky.social · 22/03/2025
Huh
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Bob Kopp @bobkopp.net · 06/03/2025
Strong statement from @agu.org
WHAT YOU DIDN'T HEAR LAST NIGHT BUT NEED TO KNOW
Last night, President Trump addressed a joint session of Congress. Titled "The Renewal of the American Dream," there was heavy emphasis on the economy, border security, and foreign relations, but what you didn't hear was the realities of a hollowing out of the federal workforce that has weakened critical scientific expertise, abdicated climate leadership, shrunk important research, and frozen global cooperation. Not a dream but a nightmare of loss and uncertainty for the United States and the world.
Declaring that "America is back" and "at the dawn of a golden age," the president highlighted more than $1.7 trillion in investments made since he took the oath of office, including increases in energy production.
But missing from last night is the reality that fast and furious halts to science funding along with sweeping terminations of federal workers at key agencies is ushering in a dark age of retreat on climate research, leadership, and international engagement.
The United States is becoming increasingly isolated, from our withdrawal from the World Health Organization and the Paris Agreement to a pull back from the Intergovernmental Panel on Climate Change, blocking future participation of federal scientists and diplomats.
The nation's vital science is cut off from the world.
The president spoke of "a comeback" - one of economic vigor and committed deregulation, but it is chaos that is reigning with widespread and indiscriminate cuts to federal research funding.You also did not hear about how proposed funding cuts are causing significant distress among research institutions.
Universities are implementing hiring freezes and reducing Ph.D. admissions. The uncertainty is prompting concerns about a potential brain drain, with researchers considering opportunities abroad if domestic funding continues to dwindle.
If cuts to agency workforces and funding freezes were not enough, just before the president's speech the Administration informed two pivotal centers for weather forecasting that their leases would be canceled.
These are not simply buildings, but nerve centers for lifesaving meteorological information. The NOAA Center for Weather and Climate Prediction in College Park, Maryland, ensures data is correctly processed for accurate forecasting. The Radar Operations Center in Norman, Oklahoma, works to improve and repair the nation's aging fleet of Doppler weather radars.
The president praised farmers in his address, declaring a new day for their productivity and success, but without reliable weather data how can they bank on that bright future?
In his closing, the president vowed to "conquer the vast frontiers of science." But with scores of scientists being fired or muzzled and with funding frozen, one must ask:
How do we do that?
Sadly, at the moment, the state of our science is not strong, but the resolve of our community in Earth and space sciences to restore and renew it is.
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Michael E. Mann @michaelemann.bsky.social · 02/03/2025
I'll be there. Details to come...
poster for Stand Up For Science rally in DC (March 7 2025)
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Alt National Park Service @altnps.bsky.social · 02/03/2025
You might not see it in the mainstream media, but over 10,000 people protested today at Tesla showrooms across the country, another 10,000+ rallied in support of national parks, and more than 1,000 gathered in Vermont to protest Vance’s visit.
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Vermont Public @vermontpublic.org · 01/03/2025
Hundreds of protesters gathered in Waitsfield on Saturday morning to protest Vice President JD Vance, who is visiting Vermont with his family for a ski trip this weekend.
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David Ho @davidho.bsky.social · 01/03/2025
All websites that depend on NOAA data should display something like this. earth.nullschool.net
Weather and climate data shown on this website and countless others are at risk.

The National Oceanic and Atmospheric Administration (NOAA) is the U.S. agency responsible for global weather forecasting, hurricane prediction, ocean observation, and many other services vital to public safety. Its satellites, supercomputers, and research teams provide essential data that help us understand our planet and protect lives.

On February 27, the new U.S. administration initiated mass firings at NOAA. These actions are unethical and deeply disruptive to the talented scientists and engineers who dedicate themselves to the public good. The firings, along with expected budget cuts, have serious implications for the availability and quality of weather forecasts produced by the United States. They must be reversed immediately.

Much of the data on this website is downloaded directly from NOAA's servers. In this environment of uncertainty, access could be disrupted at any time. While I'll strive to keep all features on this website functional and switch to alternative data sources if necessary, some datasets have no substitute if they go offline.

If this concerns you, speak up. Share on social media. And if you're in the U.S., contact your representatives.

- Cameron
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Jaap Nienhuis @changing-shores.bsky.social · 20/02/2025
#PhD and #postdoc openings at @utrechtuniversity.bsky.social ! Come join our group to study the life expectancies of river deltas across the globe! Apply here: www.uu.nl/en/organisat...
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kraanwater.bsky.social @kraanwater.bsky.social · 26/02/2025
Out now: we studied expert perspectives on living-with-water strategies (as opposed to more physical flood infrastructure) and found that although there are different perspectives to what role living with water will play in the future, experts agree at least some making room for water is needed.
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 25/02/2025
The question is not whether the Dutch will need to live more with water, but how and when they will do so. New paper: on expert perspectives on living with water (meebewegen) as climate adaptation in the Netherlands @katharinemach.bsky.social #carolienkraan iopscience.iop.org/article/10.1...
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Rob Moore @rmoore2023.bsky.social · 21/02/2025
As I told NPR, "Everything we build today needs to be built for the world we're going to inhabit decades from now. And we know what the failure to do that looks like because it's all around us." www.npr.org/2025/02/20/n...
npr.org
Exclusive: Trump administration drops work on stronger building codes for disasters
To help homes survive more intense disasters, FEMA has been developing recommendations for stronger building codes. The Trump Administration has pulled them back.
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Jeroen Haan @jeroenhaan.bsky.social · 14/02/2025
Professor @marjolijnhaasnoot.bsky.social spreekt haar oratie 'Adaptatie in delta's en kustgebieden; Een kwestie van tijd' uit. De nieuwe (klimaat)realiteit vraagt om extra inspanning en een andere kijk op de relatie van mens, natuur en delta's. Verkennen en versnelling van adaptatiestrategieën.
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 27/12/2024
Demonstrating and testing new adaptation strategies is important given the projected climate change and accelerated sea level rise. Interview this week for Dutch television about a hybrid protect measure tested by Delft University eenvandaag.avrotros.nl/item/hybride...
eenvandaag.avrotros.nl
Hybride duin van zand op dijk moet Nederland droog houden, maar is het bestand tegen zware storm? 'Dat proberen we nu uit'
Door klimaatverandering stijgt de zeespiegel, maar hoeveel en hoe snel? Hybride duinen kunnen helpen om Nederland te beschermen tegen het water. Bijvoorbeeld door zand op een dijk te storten. De grote...
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Prof Friederike Otto @frediotto.bsky.social · 27/12/2024
How extreme was the weather this year? Is a question we, @wwattribution.bsky.social , get asked every year. Looking back at the events we studied in detail & some new stats, we try to give an answer www.worldweatherattribution.org/when-risks-b... - in short: it was pretty bad, but things can change!
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IPBES @ipbes.net · 20/12/2024
🚨 OUT NOW 🚨 📚 The @ipbes.bsky.social #TransformativeChange Assessment Summary for Policymakers is here! ➡️ Dive into the extensive exploration of how fundamental change can halt biodiversity loss and secure just and sustainable futures for all. www.ipbes.net/transformati...
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Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 21/12/2024
Quelle: www.carbonbrief.org/state-of-the...
carbonbrief.org
State of the climate: 2024 will be first year above 1.5C of global warming - Carbon Brief
This year is now virtually certain to beat 2023 as the hottest year on record, Carbon Brief analysis shows.
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Arthur Oldeman @arthuroldeman.bsky.social · 20/12/2024
Een fijn stuk van @marjolijnhaasnoot.bsky.social over klimaatadaptatie en cultureel erfgoed: www.h2owaternetwerk.nl/h2o-podium/b...
h2owaternetwerk.nl
Erfgoed en klimaatadaptatie: verleden verbinden met de toekomst
De afgelopen maanden werkte ik samen met collega’s aan een boeiend project over klimaatadaptatie en cultureel erfgoed. Een nieuw onderwerp voor mij als natuurwetenschapper. Het is me duidelijk geworde...
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Tim Raupach @timraupach.com · 20/12/2024
In a new concept paper following the @wcrpclimate.bsky.social Open Science Conference, we examine links between climate science and decision making regarding extremes and risks. Enhancing these links requires better integration of climate sciences and impact sciences for actionable climate info. 1/3
A schematic showing three connected pillars (climate science, decision making, and impact science). From Sillmann et al., 2024, CC-BY-4.0.
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 19/12/2024
Data visualization is challenging, especially when moving from exploratory purposes (i.e., to discover or understand the data) to explanatory purposes (i.e., communication with others). In a paper led by @hadjimichael.bsky.social we discuss different visuals iopscience.iop.org/article/10.1...
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UK Centre for Ecology & Hydrology (UKCEH) @ukceh.bsky.social · 17/12/2024
Published today, major @ipbes.bsky.social assessment of interlinked global crises: biodiversity, water, food, health & climate change 📚 >70 options with multiple benefits across nexus elements 🌍 165 experts from 57 countries 🔦 6500 sources of knowledge ⏳ 3 years work www.ipbes.net/node/85582 1/
Cover of IPBES Nexus Assessment and a quote "We have to move decisions and actions beyond single issue silos..." Prof Paula Harrison, UKCEH
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Jaap Nienhuis @changing-shores.bsky.social · 09/12/2024
A couple more days to apply for the PhD position in our lab, closing December 13! Come join us! Utrecht is a wonderful city and we have an amazing team on coastal geomorphology and adaptation, with @marjolijnhaasnoot.bsky.social, Frances Dunn, Hans Middelkoop, and others! www.uu.nl/en/organisat...
uu.nl
PhD Position on Coastal Adaptation to Sea-Level Rise
Join our team as a PhD-candidate and work on coastal adaptation of the Dutch-German-Danish Wadden Islands!
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Johanna Joyce @johannajoyce.bsky.social · 25/11/2024
Women are under-represented at senior levels in #academia globally, & across all #science 🧪 disciplines, as shown by these "scissor-shaped curves" ✂️ So how can we ever achieve #gender #equality? We discuss various strategies in this #Cell Commentary #WomeninSTEM www.cell.com/cell/fulltex... 🧵 1/
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Paul van de Vijver @paulvdvijver.bsky.social · 22/11/2024
#Kijken | Link naar de mooie serie Zeespiegels, over Rotterdam in een veranderend klimaat, met bodemdaling en zeespiegelstijging: openrotterdam.nl/zeespiegels/ 💧Maker Gerlanda Wijninga is net gearriveerd op Bluesky: @d-lightfilms.bsky.social (volgtip)
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Kornelis Blok @kornelis.bsky.social · 19/11/2024
My first thread on Bluesky 😀 What is the global GHG mitigation potential in 2035? A very relevant question for the upcoming round of NDCs. We analysed it for the 2024 UNEP Emissions Gap Report (Ch. 6). Conclusion: the mitigation potential is more than enough to bridge the 2035 emissions gap.
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 18/11/2024
There is still time to apply for a phd position on coastal adaptation of the Dutch-German-Danish Wadden. www.uu.nl/en/organisat...
uu.nl
PhD Position on Coastal Adaptation to Sea-Level Rise
Join our team as a PhD-candidate and work on coastal adaptation of the Dutch-German-Danish Wadden Islands!
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Carbon Brief @carbonbrief.org · 18/11/2024
Q&A: The evolving science of ‘extreme weather attribution’ | @ayeshatandon.carbonbrief.org Read here: buff.ly/4fPLqpe
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Gavin Schmidt @climateofgavin.bsky.social · 11/11/2024
WMO State of the Climate Report (2024 preliminary version for COP). More not good news. library.wmo.int/viewer/69075...
library.wmo.int
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 15/09/2024
Central Europe experiences heavy rainfall and floods. It is said to be a once in 10 to 15 years event and in some regions a once in 100 year event. Such a statement ignores that statistics are changing. Extremes become more frequent with more global warming. See figure below from @IPCC WG1
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 05/09/2024
Interested in adaptation pathways? Our new paper provides a rich overview and lessons of adaptive pathways applications. We find the approach : 🚀 helps to accelerate adaptation 💡 generates new ideas 🔎 identifies path-dependency, barriers, and opportunities. www.sciencedirect.com/science/arti...
sciencedirect.com
Lessons from a decade of adaptive pathways studies for climate adaptation
Adaptive pathways planning is an approach that maps the solution space over time to inform decision making under uncertainty. Since its first applicat…
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Marjolijn Haasnoot @marjolijnhaasnoot.bsky.social · 11/04/2024
Interested in doing a PhD on climate adaptation in deltas? We have three vacancies: 1) Global Delta Adaptation based o the Physical Solution Space 2) Rhine-Meuse Delta Adaptation to Extreme Compound Events 3) Strategies to Enhance Sedimentation for Delta Adaptation www.uu.nl/en/organisat...
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