| 1. |
- Biermann, Frank, et al.
(author)
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Four governance reforms to strengthen the SDGs : A demanding policy vision can accelerate global sustainable development efforts
- 2023
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In: Science (New York, N.Y.). - 1095-9203. ; 381:6663, s. 1159-1160
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Journal article (peer-reviewed)abstract
- In 2015, the United Nations (UN) General Assembly agreed on 17 Sustainable Development Goals (SDGs) with 169 targets as part of the 2030 Agenda for Sustainable Development. Although the SDGs, which are to be achieved by 2030, are not the first attempt to guide policy actors through global goals, they go far beyond earlier agreements in their detail, comprehensiveness, and ambition. Yet the 2022 SDG Impact Assessment, conducted by a global consortium of researchers, has shown that the first phase of SDG implementation did not lead to a transformative reorientation of political systems and societies (1, 2). As the UN SDG Summit gets underway this month to review the halfway point in SDG implementation, and a further UN “Summit of the Future” is planned for 2024 to debate global governance reforms, we present here a demanding yet realistic policy vision to adjust the course of SDG implementation.
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| 2. |
- Hickmann, Thomas, et al.
(author)
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Scoping article : research frontiers on the governance of the Sustainable Development Goals
- 2024
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In: Global Sustainability. - 2059-4798. ; 7
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Research review (peer-reviewed)abstract
- Non-Technical SummaryThis article takes stock of the 2030 Agenda and focuses on five governance areas. In a nutshell, we see a quite patchy and often primarily symbolic uptake of the global goals. Although some studies highlight individual success stories of actors and institutions to implement the goals, it remains unclear how such cases can be upscaled and develop a broader political impact to accelerate the global endeavor to achieve sustainable development. We hence raise concerns about the overall effectiveness of governance by goal-setting and raise the question of how we can make this mode of governance more effective.Technical SummaryA recent meta-analysis on the political impact of the Sustainable Development Goals (SDGs) has shown that these global goals are moving political processes forward only incrementally, with much variation across countries, sectors, and governance levels. Consequently, the realization of the 2030 Agenda for Sustainable Development remains uncertain. Against this backdrop, this article explores where and how incremental political changes are taking place due to the SDGs, and under what conditions these developments can bolster sustainability transformations up to 2030 and beyond. Our scoping review builds upon an online expert survey directed at the scholarly community of the 'Earth System Governance Project' and structured dialogues within the 'Taskforce on the SDGs' under this project. We identified five governance areas where some effects of the SDGs have been observable: (1) global governance, (2) national policy integration, (3) subnational initiatives, (4) private governance, and (5) education and learning for sustainable development. This article delves deeper into these governance areas and draws lessons to guide empirical research on the promises and pitfalls of accelerating SDG implementation.Social Media SummaryAs SDG implementation lags behind, this article explores 5 governance areas asking how to strengthen the global goals.
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| 3. |
- Liu, Daizhong, et al.
(author)
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PHANGS–JWST First Results : Stellar-feedback-driven Excitation and Dissociation of Molecular Gas in the Starburst Ring of NGC 1365?
- 2023
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In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8205 .- 2041-8213. ; 944:2
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Journal article (peer-reviewed)abstract
- We compare embedded young massive star clusters (YMCs) to (sub-)millimeter line observations tracing the excitation and dissociation of molecular gas in the starburst ring of NGC 1365. This galaxy hosts one of the strongest nuclear starbursts and richest populations of YMCs within 20 Mpc. Here we combine near-/mid-IR PHANGS–JWST imaging with new Atacama Large Millimeter/submillimeter Array multi-J CO (1–0, 2–1 and 4–3) and [C ı] (1–0) mapping, which we use to trace CO excitation via R42 = ICO(4−3)/ICO(2−1) and R21 = ICO(2−1)/ICO(1−0) and dissociation via RCICO = I[CI](1−0)/ICO(2−1) at 330 pc resolution. We find that the gas flowing into the starburst ring from northeast to southwest appears strongly affected by stellar feedback, showing decreased excitation (lower R42) and increased signatures of dissociation (higher RCICO) in the downstream regions. There, radiative-transfer modeling suggests that the molecular gas density decreases and temperature and [CI/CO] abundance ratio increase. We compare R42 and RCICO with local conditions across the regions and find that both correlate with near-IR 2 μm emission tracing the YMCs and with both polycyclic aromatic hydrocarbon (11.3 μm) and dust continuum (21 μm) emission. In general, RCICO exhibits ∼0.1 dex tighter correlations than R42, suggesting C ı to be a more sensitive tracer of changing physical conditions in the NGC 1365 starburst than CO (4–3). Our results are consistent with a scenario where gas flows into the two arm regions along the bar, becomes condensed/shocked, forms YMCs, and then these YMCs heat and dissociate the gas.
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| 4. |
- Ordóñez Llanos, Andrea, et al.
(author)
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Implementation at Multiple Levels
- 2022
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In: The Political Impact of the Sustainable Development Goals : Transforming Governance Through Global Goals? - Transforming Governance Through Global Goals?. - : Cambridge University Press. - 9781316514290 - 9781009082945 ; , s. 59-91
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Book chapter (peer-reviewed)
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| 5. |
- Schinnerer, Eva, et al.
(author)
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PHANGS-JWST First Results : Rapid Evolution of Star Formation in the Central Molecular Gas Ring of NGC 1365
- 2023
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In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8205 .- 2041-8213. ; 944:2
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Journal article (peer-reviewed)abstract
- Large-scale bars can fuel galaxy centers with molecular gas, often leading to the development of dense ringlike structures where intense star formation occurs, forming a very different environment compared to galactic disks. We pair ∼0.″3 (30 pc) resolution new JWST/MIRI imaging with archival ALMA CO(2-1) mapping of the central ∼5 kpc of the nearby barred spiral galaxy NGC 1365 to investigate the physical mechanisms responsible for this extreme star formation. The molecular gas morphology is resolved into two well-known bright bar lanes that surround a smooth dynamically cold gas disk (R gal ∼ 475 pc) reminiscent of non-star-forming disks in early-type galaxies and likely fed by gas inflow triggered by stellar feedback in the lanes. The lanes host a large number of JWST-identified massive young star clusters. We find some evidence for temporal star formation evolution along the ring. The complex kinematics in the gas lanes reveal strong streaming motions and may be consistent with convergence of gas streamlines expected there. Indeed, the extreme line widths are found to be the result of inter-“cloud” motion between gas peaks; ScousePy decomposition reveals multiple components with line widths of 〈σ CO,scouse〉 ≈ 19 km s−1 and surface densities of 〈 Σ H 2 , scouse 〉 ≈ 800 M ⊙ pc − 2 , similar to the properties observed throughout the rest of the central molecular gas structure. Tailored hydrodynamical simulations exhibit many of the observed properties and imply that the observed structures are transient and highly time-variable. From our study of NGC 1365, we conclude that it is predominantly the high gas inflow triggered by the bar that is setting the star formation in its CMZ.
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