Articles | Volume 16, issue 4
https://doi.org/10.5194/esd-16-939-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/esd-16-939-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Review
| 
10 Jul 2025
Review |
| 10 Jul 2025
| 10 Jul 2025
The interaction of solar radiation modification with Earth system tipping elements
Gideon Futerman
CORRESPONDING AUTHOR
Department of Earth Sciences, University of Oxford, Oxford, OX1 3AN, United Kingdom
Mira Adhikari
Department of Geography, Kings College London, London, WC2B 4BG, United Kingdom
Alistair Duffey
Department of Earth Sciences, University College London, WC1E 6BT, United Kingdom
Yuanchao Fan
Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518000, China
Jessica Gurevitch
Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, United States of America
Peter Irvine
Department of Earth Sciences, University College London, WC1E 6BT, United Kingdom
Claudia Wieners
Institute for Marine and Atmospheric Research, Utrecht University, 3584 CC, Utrecht, the Netherlands
Related authors
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Juliette Lavoie, Aude Carreric, Alistair Duffey, Giovanni Chellini, and Elisa Ziegler
EGUsphere, https://doi.org/10.5194/egusphere-2026-1246, https://doi.org/10.5194/egusphere-2026-1246, 2026
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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The Coupled Model Intercomparison Project (CMIP) is a large collaborative project to better understand the Earth’s climate system. The data produced through this project is downloaded by users around the world. In this paper, we analyze the patterns of downloads and the usage of this massive dataset. From this analysis, we make some recommendations for future data production and usage tracking.
Jared Farley, Douglas G. MacMartin, Daniele Visioni, Ben Kravitz, Ewa M. Bednarz, Alistair Duffey, Matthew Henry, and Ali Akherati
Geosci. Model Dev., 19, 1809–1831, https://doi.org/10.5194/gmd-19-1809-2026, https://doi.org/10.5194/gmd-19-1809-2026, 2026
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As the climate changes, many are studying sunlight reflection as a potential method of cooling. Such climate intervention could be deployed in many possible ways, including in scenarios where not every actor agrees on the strategy of cooling. These scenarios are so diverse that to explore all of them using earth system models proves to be too costly. In this paper, we develop a simplified climate model that allows users to easily explore climate intervention scenarios of their choice.
Aleksandr M. Fedorov, M. Femke De Jong, Claudia E. Wieners, Elodie Duyck, and Henk A. Dijkstra
EGUsphere, https://doi.org/10.5194/egusphere-2026-918, https://doi.org/10.5194/egusphere-2026-918, 2026
This preprint is open for discussion and under review for Ocean Science (OS).
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Deep ocean mixing in the North Atlantic helps power major currents, but it is weakening as the surface warms. We used a high-resolution ocean model and separate experiments that added either extra heat loss, extra wind, or both during Greenland storm events. Extra heat loss caused most of the deep mixing, but strong winds also helped by mixing salty water upward and removing the fresh surface layer early in winter. This wind effect may slow the future decline of deep mixing.
Anthony C. Jones, James M. Haywood, Matthew Henry, and Alistair Duffey
EGUsphere, https://doi.org/10.5194/egusphere-2025-6332, https://doi.org/10.5194/egusphere-2025-6332, 2026
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Injecting aerosol into the stratosphere has been suggested to rapidly cool the planet and counter climate change. Rival actors who oppose deployment may seek to counter stratospheric aerosol injection. Using a climate model, we investigate whether stratospheric aerosol removal could be hastened by injecting coarse aerosol which promote aerosol growth and gravitational settling. We find that this could be effective, reducing aerosol impacts by 30 % in simulations, and warrants further research.
Daniele Peano, Deborah Hemming, Christine Delire, Yuanchao Fan, Hanna Lee, Stefano Materia, Julia E. M. S. Nabel, Taejin Park, David Wårlind, Andy Wiltshire, and Sönke Zaehle
Biogeosciences, 22, 7117–7135, https://doi.org/10.5194/bg-22-7117-2025, https://doi.org/10.5194/bg-22-7117-2025, 2025
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Earth System Models are the principal tools for scientists to study past, present, and future climate changes. This work investigates the ability of a set of them to represent the observed changes in vegetation, which are vital to estimating the impact of future climate mitigation and adaptation strategies. This study highlights the main limitations in correctly representing vegetation variability. These tools still need further development to improve our understanding of future changes.
Jasper de Jong, Daniel Pflüger, Simone Lingbeek, Claudia E. Wieners, Michiel L. J. Baatsen, and René R. Wijngaard
Geosci. Model Dev., 18, 8679–8702, https://doi.org/10.5194/gmd-18-8679-2025, https://doi.org/10.5194/gmd-18-8679-2025, 2025
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Injection of reflective sulfate aerosols high in the atmosphere is a proposed method to mitigate global warming. Climate simulations with injection are more expensive than standard future projections. We propose a method that dynamically scales the forcing fields based on pre-existing full-complexity data. This opens up possibilities for ensemble generation, new scenarios and higher resolution runs. We show that our method works for multiple model versions, injection scenarios and resolutions.
Alistair Duffey, Walker Lee, Lauren Wheeler, Peter Irvine, Benjamin Wagman, Matthew Henry, Daniele Visioni, Michel Tsamados, and Douglas MacMartin
EGUsphere, https://doi.org/10.5194/egusphere-2025-5356, https://doi.org/10.5194/egusphere-2025-5356, 2025
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Adding a layer of tiny reflective particles high in the atmosphere is one suggested way of cooling the planet and reducing the impacts of climate change. This technique might be less logistically difficult in the high latitudes, because the material could be released at lower altitude there. Here, we use simulations in three earth system models to assess how this form of intervention, High-Latitude Low-Altitude Stratospheric Aerosol Injection (HiLLA-SAI), would impact the global climate.
Francesco Guardamagna, Claudia Wieners, and Henk A. Dijkstra
Nonlin. Processes Geophys., 32, 201–224, https://doi.org/10.5194/npg-32-201-2025, https://doi.org/10.5194/npg-32-201-2025, 2025
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Artificial intelligence (AI) has recently shown promising results in ENSO (El Niño–Southern Oscillation) forecasting, outperforming traditional models. Yet AI models deliver accurate predictions without showing the underlying mechanisms. Our study examines a specific AI model, the reservoir computer (RC). Our results show that the RC is less sensitive to initial perturbations than the traditional Zebiak–Cane (ZC) model. This reduced sensitivity can explain the RC's superior skills.
James F. O'Neill, Tamsin L. Edwards, Daniel F. Martin, Courtney Shafer, Stephen L. Cornford, Hélène L. Seroussi, Sophie Nowicki, Mira Adhikari, and Lauren J. Gregoire
The Cryosphere, 19, 541–563, https://doi.org/10.5194/tc-19-541-2025, https://doi.org/10.5194/tc-19-541-2025, 2025
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We use an ice sheet model to simulate the Antarctic contribution to sea level over the 21st century under a range of future climates and varying how sensitive the ice sheet is to different processes. We find that ocean temperatures increase and more snow falls on the ice sheet under stronger warming scenarios. When the ice sheet is sensitive to ocean warming, ocean melt-driven loss exceeds snowfall-driven gains, meaning that the sea level contribution is greater with more climate warming.
Claudia Elisabeth Wieners and Guðmundur Hálfdanarson
Nat. Hazards Earth Syst. Sci., 24, 2971–2994, https://doi.org/10.5194/nhess-24-2971-2024, https://doi.org/10.5194/nhess-24-2971-2024, 2024
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After the 1783 Laki eruption, excess mortality in Iceland was one-sixth of the population, traditionally explained by famine due to livestock loss. Since 1970, it has been suggested that 1) fluorine poisoning may have contributed to mortality in Iceland and 2) air pollution might have caused excess deaths in both Iceland and Europe. Reviewing contemporary Icelandic demographic data, air pollution simulations, and medical records on fluorosis, we show that evidence for both hypotheses is weak.
Alistair Duffey, Robbie Mallett, Peter J. Irvine, Michel Tsamados, and Julienne Stroeve
Earth Syst. Dynam., 14, 1165–1169, https://doi.org/10.5194/esd-14-1165-2023, https://doi.org/10.5194/esd-14-1165-2023, 2023
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The Arctic is warming several times faster than the rest of the planet. Here, we use climate model projections to quantify for the first time how this faster warming in the Arctic impacts the timing of crossing the 1.5 °C and 2 °C thresholds defined in the Paris Agreement. We show that under plausible emissions scenarios that fail to meet the Paris 1.5 °C target, a hypothetical world without faster warming in the Arctic would breach that 1.5 °C target around 5 years later.
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Short summary
This review assesses the interaction of solar radiation modification (SRM), a technology to reduce the impacts of climate change by reflecting sunlight and earth system tipping elements. We find that SRM at least partially reduces the risk of hitting most (9 out of 15) of the tipping points we studied relative to the same emission pathway and did not overall worsen the risk for any. Uncertainties for all tipping elements studied were high, so we also lay out suggestions for future research.
This review assesses the interaction of solar radiation modification (SRM), a technology to...
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