greenhouse gas removal
innovation in greenhouse gas removal
To stabilise global temperatures, we need to achieve Net Zero – counteracting any remaining emissions of greenhouse gases into the atmosphere with an equivalent amount of Greenhouse Gas Removal (GGR). In order to cap the rise in global temperatures at 1.5°C above the pre-Industrial level it will be necessary to achieve Global Net Zero by 2050. This means that for every tonne of carbon dioxide that is emitted into the atmosphere in that year there will need to be a tonne of carbon dioxide permanently removed from the atmosphere.
GGR (also known as negative emissions) encompasses a wide range of proposed techniques to remove greenhouse gases from the atmosphere. While there are some proposed methods for removing greenhouse gases other than CO2, the vast majority of GGR methods involve the removal of CO2 from the atmosphere and its long-term storage so that it doesn’t find its way back into the atmosphere.
The range of proposed GGR techniques includes biological approaches, such as planting trees and increasing the amount of carbon stored in the soil, and engineered approaches, such as enhancing the rate at which certain minerals weather and devices that directly capture CO2 from the air. To assess how effective such techniques could be, it is necessary to understand how long-lasting the storage of CO2 away from the atmosphere is and to determine the social acceptability of deploying such techniques at scale.
To achieve the ambition of the Paris Agreement will require GGR techniques to be deployed at a vast scale. The exact amount of GGR required will depend on what the temperature goal is (more GGR will be required to achieve the 1.5°C goal than a 2°C goal), the rate of emissions reduction (the quicker we reduce emissions, the less GGR will be required to counter the remaining emissions) and climate sensitivity (more GGR will be required if the climate is more sensitive to increases in the amount of greenhouse gases in the atmosphere). Current estimates are that between 400-1600 billion tonnes of CO2 will need to be removed from the atmosphere during the course of the century.
There is a need to demonstrate whether proposed GGR techniques are effective and socially acceptable at a significant scale. This will require resources to research and develop proposed techniques, along with detailed consideration of the regulatory frameworks that need to be put in place to appropriately incentivise deployment.
Follow updates on this page for latest research on GGR.
greenhouse gas removal Projects
Carbon Engineering uses Direct Air Capture (DAC) technology to capture carbon dioxide directly from the atmosphere.
Climeworks develops, builds and operates direct air capture machines to capture carbon dioxide directly from the air.
Options for Greenhouse Gas Removal
Nature-based Solutions (NbS) involve working with and enhancing nature to achieve multiple benefits for people, including removing CO2 from the air, and aiding adaptation to climate change.
Equity AND Inclusion
Pathways to achieving global net zero emissions must be framed by questions of equity and justice. A just transition to a net zero future needs to be inclusive of a range of actors as well as a range of views, including those relating climate justice.
Green Recovery and Resilience
A green recovery from COVID-19 could accelerate GDP growth in the immediate future, establish new industries and jobs for the coming decade, and deliver a sustainable climate for the next century.
News and Events
By Myles Allen. Originally published on The Conversation, 15 June 2021. Featured image: /Getty The four-day G7 summit in Cornwall ended with little cause for celebration from anyone worried about climate change. Most of the pledges that emerged ... Read more
By Tim Kruger. Originally published on The Conversation, 4 June 2021. Featured image: Christian Roberts-Olsen/Shutterstock Carbon dioxide, once emitted into the atmosphere, stays there for hundreds of years. When someone uses an offset to ... Read more
Myles Allen argues it is irresponsible not to take the “net” in “net zero” seriously, because we need to stop climate change before the world stops using fossil fuels. Offsetting emissions with forestry or other nature-based solutions can help, ... Read more
Originally posted on the Race to Zero site by climate champions | APRIL 29, 2021 As net zero commitments proliferate, the refined criteria outline the minimum standard for initiatives of businesses, investors, cities, regions and universities ... Read more
By Navroz K. Dubash, Harald Winkler, and Lavanya Rajamani. Originally published on The Conversation, 5 May 2021. Translating complex climate science into language people understand has always been difficult. At various times, the aim of ... Read more
Bringing together leading researchers, policymakers and practitioners working on achieving climate neutrality, the meeting will take place simultaneously at three hubs – Berlin, Milan and Oxford – linked together to create a blended event that ... Read more
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