There is a growing consensus among national and local governments, as well as scientists, representing hundreds of millions of people, that humanity faces a climate crisis that calls for a response to the crisis. New research from the University of California San Diego explores one possible method of response: a widely funded program to deploy direct air capture (DAC) systems that remove CO2 Straight from the ambient air and sequencing it safely underground.
Findings suggest that growth in such a program may reverse Global temperature Well before 2100, but only with immediate and continued investment to increase new technology from governments and firms.
Despite the undertaking undertaken extensively in the study, the research revealed the need for governments, as well, to adopt policies that would achieve deep reductions in CO.2 Emission. The scale of effort required to achieve the Paris Agreement’s goals of keeping global temperature rise below 2 ° C alone is massive.
Published in, study Nature communicationIt assesses how crisis-level government funding on direct air occupation with government spending on war or epidemics would lead – to the deployment of a fleet of DAC plants that would collectively remove CO.2 From the environment.
First author Ryan Hanna, assistant research scientist at UC San Diego, said, “DAC is significantly more expensive than many traditional mitigation measures, but costs can drop, as companies can gain experience with technology.” “If this happens, politicians may turn to technology in response.” Public pressure If traditional mitigation proves to be difficult politically or economically. “
Co-author David G. Victor, professor of industrial innovation at UC San Diego’s School of Global Policy and Strategy, said atmospheric C.O.2 Concentrations are such that to meet climate goals, not only does new emissions need to be stopped through extensive decarbonization of the energy system, but also ways are being found to overcome already historic emissions in the atmosphere.
“The current paradigm of global emission reductions put us on track for about 3 degrees C of warming,” said Victor. “This reality calls for research and action around the politics of emergency response. In times of crisis, such as war or pandemics, policy constraints and many barriers to implementation eclipse the need to aggressively mobilize.”
Emergency deployment of direct air capture
The study calculates wealth, net CO2 Removal and climate impacts of a large and continuous program to deploy direct air capture technology.
The authors believe that if an emergency direct air capture program was introduced in 2025 and an investment of 1.2–1.9% of global GDP was achieved, it would remove 2.2–2.3 gigatonne CO.2 By the year 2050 and 13-20 gigatons of CO2 By 2075, cumulatively, the program will remove 570-840 gigatonne CO2 From 2025-2100, which comes in the range of CO2 IPCC scenarios suggest Paris goals will need to be met.
With such a huge program, the world would see a 2.4–2.5 inC temperature increase in the year 2100 without further reductions in global emissions below the current trajectory.
Discovering the reality of a fleet of CO2 Scrubber in the sky
According to the authors, DAC has qualities that may prove attractive to policy makers if political pressure continues to function. Climate change, Yet it is inevitable to cut emissions.
“Policy makers can see value in establishing a fleet of CO2 Scrubbers: Deployment will be highly controlled by governments and firms that invest in them, their carbon removal is confirmed, and they do not threaten the economic competitiveness of existing industries.
From the Civil War to Operation Warp Speeds, the authors estimate the financial resources that could be available for direct airborne emergency deployments of more than a trillion dollars per year – based on past time spending that the US has endangered. Done in the time of
The authors then created a deep-up deployment model that builds, operates, and recovers gradual vintages of DAC scrubbers, which can improve direct air capture technologies over time at available funds and given rates. They combine technical and economic modeling of climate models that calculate the effects of these deployments on atmospheric CO2 Concentration level and global mean surface temperature.
With large-scale financial resources for DAC, the study found that the ability to scale the DAC industry is the main factor CO2 Evacuation The authors point to the ongoing epidemic as a trend: even though the FDA has authorized the use of coronavirus vaccines, it still continues to produce, transport, and deliver new treatments quickly and efficiently to vast areas of the public Is a major logical challenge. .
Traditional mitigation is still needed, even to deal with climate change
“The deployment of direct air capture, even at the peak of what is technically feasible, is not an alternative to conventional mitigation,” the authors write.
Nevertheless, they note that long-term vision needs to take negative emissions seriously to combat the climate.
“For policy controllers, one implication of this finding is the high value of near-term direct air capture deployments – even though societies today are not treating climate change as a crisis – because the near-term deployment is scalability of the future. Enhances, “he writes. “Rather than avoiding direct air capture deployments due to high near-term costs, the correct policy approach is the opposite.”
Additionally, they note that such a large program would lead to the development of a new economic zone, which would create a substantial number of new jobs.
The authors conclude that it is time to pursue research Direct air capture The system of real-world conditions and constraints that accompany deployment – especially in the context of the intense political pressures that will emerge as a climate change crisis.
Nature communication (2021). DOI: 10.1038 / s41467-020-20437-0
University of California – San Diego
Quotes: A Climate in Crisis Calls for Direct Air Investment, News Research Search (2021, 14 January) 14 January 2021 https://naveenbharat.org/news/2021-01-climate-crisis-investment-air- Retrieved from cureure .html
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