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 (GGR, also known as negative emissions) encompasses a range of techniques for reducing the concentration of greenhouse gases in ambient air.

GGR Options

Check out the GGR Summer School to be hosted by the Oxford Martin School in September 2021!

greenhouse gas removal Projects

 

carbon engineering

Carbon Engineering uses Direct Air Capture (DAC) technology to capture carbon dioxide directly from the atmosphere.

Climeworks

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

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

Climate change: what G7 leaders could have said – but didn’t
Climate change: what G7 leaders could have said – but didn’t

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

Carbon dioxide lasts for centuries – so should carbon offsets
Carbon dioxide lasts for centuries – so should carbon offsets

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

Professor Myles Allen on BBC Radio on taking the ‘net’ in net zero seriously
Professor Myles Allen on BBC Radio on taking the ‘net’ in net zero seriously

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

The Race to Zero strengthens and clarifies campaign criteria with support of Oxford Net Zero
The Race to Zero strengthens and clarifies campaign criteria with support of Oxford Net Zero

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

Developing countries need to chart their own course to net zero emissions
Developing countries need to chart their own course to net zero emissions

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

Oxford Net Zero to Co-host a Climate Neutrality Forum: Register Your Interest
Oxford Net Zero to Co-host a Climate Neutrality Forum: Register Your Interest

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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How can we best communicate climate change to children?
Tonight @ 7pm (BST) our #Oxfordalumni panel including @stv_smth @OxfordNetZero and @janiceillao will discuss the best ways to turn scientific research into child-friendly reading.
Register now >> http://bit.ly/Book-MMG2021

The #ClimateCrisis is reshaping our world, yet how often do you hear about it?

26,000 Climate Conversations is a #ClimateAction campaign with a simple goal: 26K #ClimateChats by Nov. 1—Day 1 of @COP26.

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