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Paula Castro

@paucastro.bsky.social
100 followers 43 following 21 posts

Climate policy and politics ZHAW Winterthur

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Paula Castro @paucastro.bsky.social · 30/12/2025
In the next months, we expect to publish more inferential work on presence, participation and influence in the #ClimateChangeNegotiations, emerging from our project BeCoSS Climate (www.zhaw.ch/en/research/...).
zhaw.ch
Beyond Coalitions: Small States in Climate Negotiations (BeCoSS-Climate) | ZHAW Zurich University of Applied Sciences
Small states are often taken to be rule-takers rather than rule-makers in international affairs. Yet, small states can punch above their weight, notably when working through coalitions. While coaliti...
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Paula Castro @paucastro.bsky.social · 30/12/2025
The paper is available here doi.org/10.1163/1571... (unfortunately not open access). Feel free to reach out to me and I can share a copy.
doi.org
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Paula Castro @paucastro.bsky.social · 30/12/2025
While descriptive and exploratory in nature, the paper highlights the need to look beyond simple measures of delegation size to assess countries’ resources sent to the negotiations.
UNFCCC delegation size and composition over time
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Paula Castro @paucastro.bsky.social · 30/12/2025
The second paper, with Carola Klöck, explores to what extent countries use strategies such as sending more senior negotiators, maintaining delegations continuity, or sending non-governmental experts to compensate for small delegation size in #UNFCCC negotiations.
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Paula Castro @paucastro.bsky.social · 30/12/2025
The full dataset and codebook can be found in the SWISSUBase repository: doi.org/10.48573/ycj...
doi.org
Participation, Cooperation and Conflict in UN Climate Negotiations
This dataset records negotiation interventions and negotiation interactions by country parties and groupings in the multilateral negotiations under the United Nations Framework Convention on Climate C...
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Paula Castro @paucastro.bsky.social · 30/12/2025
The algorithm is freely available in my co-author’s @VictorKristof GitHub page: github.com/victorkristo.... It can be easily adapted to retrieve data from other multilateral environmental negotiations covered by the ENBs.
github.com
GitHub - victorkristof/enb-mining
Contribute to victorkristof/enb-mining development by creating an account on GitHub.
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Paula Castro @paucastro.bsky.social · 30/12/2025
The paper has been published open access in Nature Scientific Data: rdcu.be/eWMfh
rdcu.be
Participation, Cooperation and Conflict in UN Climate Negotiations
Scientific Data - Participation, Cooperation and Conflict in UN Climate Negotiations
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Paula Castro @paucastro.bsky.social · 30/12/2025
As 2025 draws to a close, I am happy to share two papers on the #UNFCCC climate change negotiations. In the 1st one, #open_access in Nature Scientific Data, we present an algorithm to retrieve data on parties’ participation and bargaining interactions in the negotiations, drawing from @enb.iisd.org.
Map of UNFCCC negotiation interventionsNetwork of UNFCCC negotiation interactions
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Paula Castro @paucastro.bsky.social · 06/11/2025
With @carlschleussner.bsky.social, Alexandra Lesnikowski, @adellethomas.bsky.social, @romainweikmans.bsky.social, @timmonsroberts.bsky.social, Ambuj Sagar, Sonia Klinsky, Thomas Bernauer
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Paula Castro @paucastro.bsky.social · 06/11/2025
10 years after the adoption of the #ParisAgreement, Nature Climate Change has published a reflection of what has been achieved and what still needs to be done. I’m honoured to have contributed the section on countries’ nationally determined contributions (#NDCs). Full text here: rdcu.be/eOpVp
rdcu.be
Expert retrospective on a decade of the Paris Agreement
Nature Climate Change - To mark the tenth anniversary of the Paris Agreement, Nature Climate Change asked experts to reflect on the progress of and barriers to several of its key Articles. They...
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Reposted by Paula Castro
Climate Policy Journal @climate-policy.bsky.social · 30/10/2025
🚚 🇪🇺 Powering road freight in the EU with #renewable #hydrogen is unlikely to help reach #NetZero objectives, find Lafaille & Vernay. The European Commission should: ➡️ Fix several methodological errors in its policy framework ➡️ Focus on other road freight #decarbonization levers Read more ⬇️
tandfonline.com
Opening the hood: a critical assessment of European renewable hydrogen trucking policies
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Reposted by Paula Castro
Florian Landis @florian-landis.bsky.social · 08/08/2025
Publication alert: I look at how consumption based responsibility for global warming is distributed across the Swiss population (others have done that before me). Then, I discuss what the consequences of this for climate policy may be. doi.org/10.1186/s419... #ClimateSky #EnergySky
doi.org
Consumption-based responsibility for global warming and the distribution of impacts of swiss climate policy - Swiss Journal of Economics and Statistics
Different consumption patterns have been linked to different levels of responsibility for current greenhouse gas (ghg) emissions, and it is well established that the affluent are responsible for highe...
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Reposted by Paula Castro
🌍⚖️ Sébastien Duyck @duycks.bsky.social · 23/07/2025
🔥 ⚖️ 🌐HAPPENING NOW: Historic #ClimateJustice Ruling being delivered by the 🇺🇳 🧑‍⚖️ International Court of Justice. 🚨This ruling could signal a new dawn for climate law & accountability 📝 🧵 Live thread below with context, summary & analysis 👇 #ClimateJusticeAO #AOLetsGo
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Reposted by Paula Castro
Kyle Reed 🟥 @kylereed.bsky.social · 23/07/2025
"IHRL, the climate change treaties, and other relevant environmental treaties...inform each other. States must, therefore, take their obligations under IHRL into account when implementing their obligations" Good to see IHRL coming out strongly as we go through the opinion
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Reposted by Paula Castro
Kyle Reed 🟥 @kylereed.bsky.social · 23/07/2025
Ahead of today's ICJ #ClimateChange #AdvisoryOpinion, I've seen a lot of "but it won't be binding." This is, like a lot of things, technically true and also beyond the point. 🧵 #IntLaw
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PIK_climate @pik-potsdam.bsky.social · 24/07/2025
"The ICJ pointing the direction for the entire world and making clear that every nation is legally obliged to solve the climate crisis," says PIK director Johan Rockström in @rfi.fr. 1.5°C would now be recognised in international law as planetary limit. www.rfi.fr/en/internati...
rfi.fr
World's top court paves way for climate reparations
The world's highest court Wednesday declared that states are obliged under international law to tackle climate change and warned that failing to do so could open the door to reparations.
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Dave Jones @cleanpowerdave.bsky.social · 10/06/2025
70% of all fossil fuel emissions ever, occurred in my lifetime🤯
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Emily Hite @ebhite22.bsky.social · 15/04/2025
Now FREE access: Collaborative event ethnography of the UNFCCC process www.tandfonline.com/journals/tcl... @climdevjournal.bsky.social @jamiehaverkamp.bsky.social @jakewdean.bsky.social @simonchinyee.bsky.social @daniellefalzon.bsky.social @paucastro.bsky.social @finejulia6.bsky.social
tandfonline.com
Collaborative event ethnography of the UNFCCC process: Assessing local-global scales of (in)justice within global climate governance arenas
Explore the article collection: Collaborative event ethnography of the UNFCCC process: Assessing local-global scales of (in)justice within global climate governance arenas. Published in Climate and Development.
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Paula Castro @paucastro.bsky.social · 14/01/2025
Thanks for the collaboration, Jack Baker, Marlene Kammerer and Karin Ingold!
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Paula Castro @paucastro.bsky.social · 14/01/2025
The full paper (open access) is available here: doi.org/10.1080/1469...
doi.org
The vertical policy harmonization indices: assessing the gap between climate mitigation pledges and policies
The effectiveness of the Paris Agreement in achieving its global temperature goal relies on countries adopting ambitious mitigation targets and introducing corresponding measures. But do countries ...
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Paula Castro @paucastro.bsky.social · 14/01/2025
👉 The coerciveness of policy instruments and the likelihood of their implementation remains low across sectors. 👉 EU membership and development status are associated with the gap between climate mitigation pledges and policies.
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Paula Castro @paucastro.bsky.social · 14/01/2025
Inter alia, we find that: 👉 3/4 of the 105 countries covered have failed to translate their most recent NDC targets into national policy 👉 Countries tend to have their most balanced and intense policy mix in their largest emitting sector (often energy)
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Paula Castro @paucastro.bsky.social · 14/01/2025
How can we assess the implementation gap existing between climate change #mitigation pledges under the #ParisAgreement and national policy-making? In our just published Climate Policy article, we use a public policy approach to develop two Vertical Policy Harmonization indices that do just that.
Structure of the Vertical Policy Harmonization Indices
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Paula Castro @paucastro.bsky.social · 07/01/2025
Many more details are available in the report, co-authored by Gianfranco Guidati, Christina Marchand, Paula Castro, Malte Winkler, @florian-landis.bsky.social, Matthias Honegger, and Regina Betz.
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Paula Castro @paucastro.bsky.social · 07/01/2025
👉 Differentiated policy approaches to CCS from cement and waste incineration plants; 👉 Promoting early investments in CO2 transport infrastructure to limit long-term costs; 👉 Expanding international collaboration on carbon markets.
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Paula Castro @paucastro.bsky.social · 07/01/2025
👉 Promoting wood use in construction; 👉 Sustainable management of biomass resources for capturing carbon while addressing competing uses; 👉 Supporting production and import of sustainable aviation fuels to comply with blending requirements;
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Paula Castro @paucastro.bsky.social · 07/01/2025
We identify policies and measures to scale the adoption of the most promising Carbon Management Technologies to address hard-to-abate emissions in Switzerland under the four narratives, including:
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Paula Castro @paucastro.bsky.social · 07/01/2025
Using the Swiss Energyscope Model (SES-ETH), we build upon four narratives of Switzerland’s energy and climate policy to model the role that Carbon Management Technologies – including CCUS, DAC, wood in construction, and biochar – may play for reaching the 2050 net-zero GHG emissions goal.
ses.ethz.ch
SES-ETH – SES-ETH
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Paula Castro @paucastro.bsky.social · 07/01/2025
Just at the end of 2024 we finally published our DeCIRRA report on “Future use of Carbon Management to achieve Emissions Reductions and Removals in Switzerland: Scenario and Modeling Analysis“. (decirra.ch/publikationen/).
decirra.ch
Publikationen – DeCIRRA
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