RESEARCH PAPERS
Baur, S., Sanderson, B. M., Séférian, R., & Terray, L. (2024). Change in Wind Renewable Energy Potential under Stratospheric Aerosol Injections.
Wind renewable energy (WRE) is an essential component of the global sustainable energy portfolio. Recently, there has been increasing discussion on the potential supplementation of this conventional mitigation portfolio with Solar Radiation Modification (SRM). However, the impact of SRM on conventional mitigation measures has received limited attention to date. In this study, we explore one part of this impact, the potential effect of one type of SRM, Stratospheric Aerosol Injections (SAI), on WRE. Using hourly output from the Earth System Model CNRM-ESM2-1, we compare WRE potential under a medium emission scenario (SSP245) and a high emission scenario (SSP585) with an SRM scenario that has SSP585 baseline conditions and uses SAI to offset warming to approximately SSP245 global warming levels. Our results suggest that SAI may affect surface wind resources by modifying large-scale circulation patterns, such as a significant poleward jet-shift in the Southern Hemisphere. The modeled total global WRE potential is negligibly reduced under SAI compared to the SSP-scenarios. However, regional trends are highly variable, with large increases and decreases in WRE potential frequently reaching 12% across the globe with SAI. This study highlights potential downstream effects of SRM on climatic elements, such as wind patterns, and offers perspectives on its implications for our mitigation efforts.
Narenpitak, P., Kongkulsiri, S., Tomkratoke, S., & Sirisup, S. (2024). Regional impacts of solar radiation modification on surface temperature and precipitation in Mainland Southeast Asia and the adjacent oceans. Scientific Reports, 14(1), 22713.
Abstract
Solar radiation modification (SRM) has been proposed to temporarily reduce anthropogenic warming. This study presents an assessment of the regional impacts of SRM via solar dimming and stratospheric aerosol injection (SAI) on temperature and precipitation over 0°–30° N and 90° E–110° E, covering Mainland Southeast Asia and adjacent oceans. Using data from the Geoengineering Model Intercomparison Project Phase 6 (GeoMIP6), we examine regional impacts of SRM using three SRM experiments: (1) G6Sulfur, which reduces radiative forcing from the high-emission SSP5–8.5 scenario to the moderate-emission SSP2–4.5 scenario by injecting sulfate aerosols; (2) G6Solar, which similarly reduces radiative forcing from the high-emission to moderate-emission scenarios but by uniformly reducing the solar constant; and (3) G1ext, which reduces radiative forcing from a quadrupled carbon dioxide concentration to pre-industrial levels by uniform solar constant reduction. Our findings show that higher greenhouse gas emissions increase overall precipitation, along with tendencies to have extreme rainfall events and more dry episodes in between. While SRM can partially cool down the surface temperature warming caused by increased greenhouse gas emissions, its effects on precipitation are complex: Solar dimming in G6Solar and G1ext tends to reduce overall precipitation, and tropical sulfate injection in G6Sulfur could lead to further drying in the tropics because of the stratospheric warming associated with the injected aerosols. Different SRM strategies might result in different responses on precipitation.
WEB POSTS
Solar Geoengineering UpdatesSolar Geoengineering Updates is a reader-supported publication. Help us maintain this service by choosing a paid subscription…
4 days ago · 2 likes · Andrew Lockley
UPCOMING EVENTS
Discovery workshop focussing on atmospheric science (SRM) | 18 October 2024 | Online
Integrative synthesis workshop focusing on identifying gaps in current governance & ethics | 18 November 2024 | Online
1: On the bright side: new developments in Marine Cloud Brightening technology | 16 October 2024
2: Field trials for a cooler planet: sea, sky and ice | 23 October 2024
3: Ethics and Governance (title TBA) | 06 November 2024
4: Good COP, Bad COP: a post-COP29 assessment | 27 November 2024
ge UK
Solar Geoengineering Events Calendar
GUIDELINES:
Sync selected events to your default calendar in these simple steps:
1) Click on the event you want to sync.
2) Tap the menu icon (three vertical lines) at the top left.
3) Choose 'Share.'
4) Pick your default calendar.
5) Save the event.
Sync the entire Teamup Calendar to your default calendar with these simple steps:
1) Tap the menu icon (three vertical lines) at the top right.
2) Choose 'Preferences.'
3) Click 'iCalendar Feeds.'
4) Copy the URL shown for 'Solar Geoengineering Events / SRM Deadlines.'’
5) Paste the URL into your default calendar settings (Open Google Calendar in your web browser if you are using Gcal).
6) Click 'Subscribe' or 'Add Calendar.'
You can directly sync all Solar Geoengineering events to your default calendars by pressing the link below:
Sync SG Events to your Default Calendar
PODCASTS
Is cirrus thinning dead? Jeggle | Reviewer 2 does Geoengineering
 | Is cirrus thinning dead? Jeggle Reviewer 2 does geoengineering 57:49 |
"Kai Jeggle explains to @geoengineering1 how off-target effects of cirrus cloud thinning mean that it can never be used effectively. Paper; Jeggle, K., Neubauer, D., Binder, H., and Lohmann, U.: Cirrus formation regimes – Data driven identification and quantification of mineral dust effect, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-2559, 2024."
YOUTUBE VIDEOS
Harvard @ Climate Week NYC | Time to Think About Solar Geoengineering? | The Salata Institute at Harvard University
"A thought-provoking discussion on the emerging and controversial topic of solar geoengineering. This event brought together renowned experts to explore the broader context of climate change and the rising interest in solar geoengineering.
Topics Covered:
-What are the scientific and engineering challenges of solar geoengineering?
-How should we think about the ethical and cultural dimensions of solar geoengineering? Why does this technological approach seem frightening to many experts?
-Why is solar geoengineering receiving more attention in recent years? Does it imply that the decarbonization is failing?
-What are the geopolitical challenges of solar geoengineering? Will this interfere with the international climate agreements?
-How should universities engage with solar geoengineering? What are the research challenges for the next decade?"
The Geopolitics of Geoengineering with Cynthia Scharf | Climate Chat
"In this Climate Chat episode, we will discuss the need for governance of both research and deployment of solar geoengineering, aka, Solar Radiation Management (SRM) with Cynthia Scharf who is senior advisor to the International Center for Future Generations, a European think tank, where she leads their work on climate intervention technologies."
Operaatio Arktis: Interview with Clara Botto, 2024 | Operaatio Arktis
"Clara has been engaged with sustainable development at a grassroots and international level, from arts to politics, for the past 9 years. Clara works in Just Deliberation on Solar Geoengineering (DSG) and for the period 2024-2025 she is also working as a fellow with the Communications team of the UNFCCC and UNU-EHS. Above all that Clara Botto is our friend and dear colleague who wants to save the world as much as we want.
We discussed fears and concerns about Solar Radiation Modification research. Who needs to be discussing these things on the decision making tables? Are we there yet? Let’s find out."
Episode 636 Governing Geoengineering | ToSaveTheWorld
"Daniel Bodansky and Jesse Reynolds are both professors of international law. Robert Chris is a geography professor and advocate of geoengineering. All three guests worry that there is no strong constituency demanding faster adoption of climate repair, for it is urgently needed."
Varisha Khan: Interview with SRM Youth Watch | SRM Youth Watch
"Varisha Khan is an MSc student of Health Informatics working as a Research Associate under a project at COMSATS University, Islamabad. The institute has a leading team devoted to climate action in the context of geoengineering, focusing on the Global South. Varisha’s goal is to scrutinise the “Trade-off Based Impacts of SRM on Malaria Distribution across South Asia, particularly Pakistan"."
DEADLINES
(NEW) Call for Proposals—Exploring Climate Cooling | Deadline to submit concept paper by 07 October 2024 | Full Proposal deadline is 09 December 2024
Applications for presentations and posters are required in the following areas:
-Stratospheric Aerosol Injection
-Marine Cloud Brightening
-Seabed Curtains
-Sea Ice Thickening
-Space Sun Shades
-Other Arctic Repair Topics (e.g. glacier drainage, land surface albedo enhancement, cirrus cloud thinning, ocean foaming etc.)
