Can geoengineering plans save glaciers and slow sea level rise?
05 February 2025, Douglas Fox, www.sciencenews.org
Controversial plans to curb the melting of some West Antarctic glaciers pose big challenges.05 February 2025, Douglas Fox, www.sciencenews.org
Controversial plans to curb the melting of some West Antarctic glaciers pose big challenges.04 February 2025, GRID-Arendal and UArctic, www.uarctic.org
While concerns about the risks and drawbacks of climate interventions are well-founded, few systematic studies have assessed the proposed options and their potential environmental, social, and economic consequences. To address this gap, UArctic, GRID-Arendal, and the Arctic Centre at the University of Lapland released Frozen Arctic: Horizon Scan of Interventions to Slow Down, Halt, and Reverse the Effects of Climate Change in the Arctic and Northern Regions in October 2023. The team behind the initiative is now embarking on the most ambitious phase of the project. Every proposed intervention will undergo an open, high-quality, transparent, and non-partisan peer-review process. Expert groups from a range of disciplines—including atmospheric, terrestrial, ocean, and ecosystem sciences, as well as economics, society, business, law, and governance—will lead the reviews.09 January 2025, Kenneth D. Mankoff, Christina Hulbe, Sławek Tulaczyk, Francesca Marzatico and Tiffany Morrison , eos.org
Prospects for mitigating sea level rise by slowing flows of glacial ice into the ocean are worthy of research, but this work must involve all rights holders and stakeholders.26 August 2024, Charles Pekow, news.mongabay.com
The history of geoengineering policymaking has been piecemeal over past decades, with U.N. bodies failing to create or implement rigorous binding international regulatory frameworks for geoengineering management, and with academia and think tanks delivering reports and recommendations that offer little definitive detailed regulatory guidance.26 August 2024, Fred Pearce, e360.yale.edu
Relatively warm ocean currents are weakening the base of Antarctica’s enormous Thwaites Glacier, whose demise could raise sea levels by as much as 7 feet. To separate the ice from those warmer ocean waters, scientists have put forward an audacious plan to erect a massive underwater curtain.22 August 2024, Matt Simon, grist.org
Across the world, farmers are turning waste biomass into biochar, improving soils, boosting yields, and creating a new source of income.12 August 2024, Sean Mowbray, news.mongabay.com
Marine cloud brightening (MCB), the spraying of sea salt aerosols or other fine particles into clouds to artificially brighten them and increase the sun’s reflectivity, is a proposed strategy to ward off the full effects of climate change.01 August 2024, Sean Mowbray, news.mongabay.com
As the climate crisis advances, geoengineering — intentionally modifying Earth systems on a large scale to cool the planet or store additional carbon — is increasingly a hot topic. But an intense debate is raging as to how to govern research and deployment of these deeply contentious strategies.24 July 2024, Jeremy Hance, news.mongabay.com
As climate change accelerates, some scientists are calling for more field research into solar geoengineering concepts. However, these ideas are running into opposition from other researchers, some governments and the public.23 July 2024, Jeremy Hance, news.mongabay.com
Recent research and interest, especially from the U.S. government, has pushed a solar geoengineering idea known as SAI, or stratospheric aerosol injection, to the top of lists of potential ideas to cool the planet. SAI would use fleets of high-flying aircraft to disperse sunlight-reflecting particles, including sulfates, into the stratosphere.05 June 2024, Fred Pearce, Yale Environment 360, grist.org
New research indicates that the decline in smog particles from China’s air cleanups caused the recent extreme heat waves in the Pacific.28 May 2024, Fred Pearce, e360.yale.edu
New research indicates that the decline in smog particles from China’s air cleanups caused the recent extreme heat waves in the Pacific. Scientists are grappling with the fact that reducing such pollution, while essential for public health, is also heating the atmosphere.21 May 2024, Jeremy Hance, news.mongabay.com
Given that the serious impacts of climate change are rapidly escalating, some scientists, backed up increasingly by governments, are looking into extreme measures such as geoengineering to slow the rate of change.22 April 2024, Andrew S. Lewis, e360.yale.edu
For billions of years, the oceans have been absorbing CO2 from the atmosphere. Now, to boost that drawdown, startup companies and researchers are experimenting with ‘marine carbon dioxide removal’ by altering the chemistry of the ocean and sinking biomass to the seafloor.27 February 2024, Senay Boztas, www.theguardian.com
As the Arctic warms, devastating the climate and ecosystems, an old idea used to create skating rinks could be deployed to restore melting ice caps, despite scepticism from some experts22 February 2024, Jonathan Watts , www.theguardian.com
Proposal focuses on technique that fills atmosphere with particles, reflecting part of sun’s heat and light back into space22 February 2024, Jake Bittle, grist.org
Aerosol pollutants have masked the effects of global warming. Without them, the U.S. is about to get a lot wetter.13 October 2023, Ingrid Røise Kielland , www.dn.no
Denne artikkelen har blitt delt med deg av en DN-abonnent. Du kan lese den gratis hvis du ikke allerede har tilgang. Merk at lenken kun er tilgjengelig i 7 dager. God lesing!12 September 2023, CBC, www.cbc.ca
Scientists say geoengineering, or doing things like intentionally increasing Earth’s reflectivity or blocking the sun, is a “really big deal” in slowing down climate change. Here are the ideas they are proposing.17 October 2022, Elizabeth L. Chalecki, doi.org
As the effects of climate change continue to worsen, nations will have the opportunity to develop and deploy climate manipulation techniques known as geoengineering to forestall the worst effects. Indeed, some have argued that the nations of the world cannot meet their Paris Agreement goals without them. However, these technologies can be global in their effects, ecologically uncertain, and potentially prejudicial to non-deploying nations. Canada is well suited to lead the formation of an anticipatory governance regime due to its technological knowledge, the proximity of the Arctic as a potential testing ground, and its role as an internationally respected middle power. By stepping forward to lead the effort, Canada can ensure its own security and environmental interests as well as the stability of the rules-based international order.05 February 2025, Douglas Fox, www.sciencenews.org
04 February 2025, GRID-Arendal and UArctic, www.uarctic.org
09 January 2025, Kenneth D. Mankoff, Christina Hulbe, Sławek Tulaczyk, Francesca Marzatico and Tiffany Morrison , eos.org
26 August 2024, Charles Pekow, news.mongabay.com
26 August 2024, Fred Pearce, e360.yale.edu
22 August 2024, Matt Simon, grist.org
12 August 2024, Sean Mowbray, news.mongabay.com
01 August 2024, Sean Mowbray, news.mongabay.com
24 July 2024, Jeremy Hance, news.mongabay.com
23 July 2024, Jeremy Hance, news.mongabay.com
05 June 2024, Fred Pearce, Yale Environment 360, grist.org
28 May 2024, Fred Pearce, e360.yale.edu
21 May 2024, Jeremy Hance, news.mongabay.com
22 April 2024, Andrew S. Lewis, e360.yale.edu
27 February 2024, Senay Boztas, www.theguardian.com
22 February 2024, Jonathan Watts , www.theguardian.com
22 February 2024, Jake Bittle, grist.org
13 October 2023, Ingrid Røise Kielland , www.dn.no
12 September 2023, CBC, www.cbc.ca
17 October 2022, Elizabeth L. Chalecki, doi.org