Geoengineering

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Introduction

Geoengineering is the deliberate large-scale alteration of the Earth’s environment to mitigate climate change and alternate hazard risk. Explore the suggested approaches and related governance and policy issues.

Themes
Climate change
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Knowledge base

Update

Scientists propose guidelines for solar geoengineering research

Scientists for several years have studied the theoretical effectiveness of injecting sulfur dioxide into the stratosphere to reflect heat from the Sun and offset Earth's warming temperatures.
National Center for Atmospheric Research
Clouds above a corn field in the summer.
Research briefs

Cloud brightening could have unintended effects in a warming world

New research shows that though marine cloud brightening holds potential to temporarily reduce heat stress regionally, the technique has unpredictable and far-reaching outcomes.
Eos - AGU
Update

Climate engineering off US coast could increase heatwaves in Europe, study finds

A geoengineering technique designed to reduce high temperatures in California could inadvertently intensify heatwaves in Europe, according to a study that models the unintended consequences of regional tinkering with a changing climate.
Guardian, the (UK)
Update

Honest dialogue is needed to help build consensus around solar radiation modification technology

At the recent Sixth United Nations Environment Assembly (UNEA), world governments were unable to come to an agreement on whether to call for a scientific assessment of the potential and risks of SRM deployment and the resolution was withdrawn.
Conversation Media Group, the
Update

How geoengineering technologies can combat heatwave impacts

Marine cloud brightening is not a "silver bullet" for climate change. However, in a world where every bit helps, exploring innovative solutions like cloud brightening offers a glimmer of hope and a potential tool in our climate action toolkit.
Climate Adaptation Platform
Research briefs

Cloud engineering could be more effective ‘painkiller’ for global warming than previously thought

Cloud ‘engineering’ could be more effective for climate cooling than previously thought, because of the increased cloud cover produced, new research shows.
University of Birmingham
RAR logotype
Update

Climate engineering carries serious national security risks − countries facing extreme heat may try it anyway, and the world needs to be prepared

Climate engineering could be part of an equitable solution to climate change. But it also carries risks. Put simply, climate engineering is a technology that can’t be ignored, but more research is needed so policymakers can make informed decisions.
Conversation Media Group, the
Aerial image of Lake Louise in Alberta, Canada
Research briefs

Why artificial submarine curtains won’t save West Antarctica’s retreating glaciers

Some researchers have recently proposed the construction of artificial structures – submarine curtains or walls – to stop the warming ocean from getting to the most rapidly melting glaciers in West Antarctica.
Conversation Media Group, the
Research briefs

Scientists create new idea on how to hack a warming planet: Drying the upper atmosphere

Government scientists have cooked up a new concept for how to potentially cool an overheating Earth: Fiddle with the upper atmosphere to make it a bit drier.
Associated Press
Research briefs

Emergency atmospheric geoengineering wouldn't save the oceans

Employing "emergency" atmospheric geoengineering later this century in the face of continuous high carbon emissions would not be able to reverse changes to ocean currents, a new study finds.
American Geophysical Union

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