In the event of a crisis, the climate calls for direct investment in air capture
Funding for a carbon-fiber fleet network during wartime may slow down warming, but ending climate change still requires deep emissions reductions.
There is a growing consensus among scientists, as well as national and local governments representing hundreds of millions of people, that humanity is facing a climate crisis that requires a response to the crisis. A new study from the University of California, San Diego, examines one possible answer. Mass-funded program for the installation of air intake (DAC) systems that remove CO2 directly from the ambient air; it is safely laid on the floor.
The findings show that such a program could reverse global warming before 2100, but only to increase new technology through immediate, sustainable investment by governments.
Despite the enormous scope of the study, the study also highlights the need for governments to adopt policies that will lead to profound reductions in carbon dioxide emissions. The scale of the ankles needed simply to achieve the goals of the Paris Agreement to keep the average global temperature rise below 2 degrees Celsius is massive
The study was published Nature communications, estimates how directly capturing government-funded air at the crisis level, relative to government spending on wars or epidemics, would result in the deployment of a fleet of DAC stations that would collectively absorb CO2 from the atmosphere.
“The DAC is significantly more expensive than most conventional mitigation measures, but the costs may fall as companies gain experience with the technology,” said Ryan Hanna, UC San Diego Research Assistant. “If that happens, politicians can turn to technology in response to societal pressure if conditional easing proves to be politically or economically difficult.”
Co-author David G. Victor, a professor of industrial innovation at the San Diego School of World Policy and Strategy, added that atmospheric CO2 concentrations are such that meeting climate targets requires not only preventing new emissions through large-scale hydrocarbon hydropower but also exploring historical atmospheres.
“Today’s promises to reduce global emissions are warming us by about three degrees,” said Victor, an associate professor at the Scripps Institute of Oceanography. “This reality calls for research and action on emergency response policy. In times of crisis, such as war or epidemics, many barriers to policy spending ծախս implementation are obscured by the need for aggressive mobilization. ”
Emergency direct air intake installation
The study calculates funding, CO2 emissions, and climate change for a large, sustainable project to deploy direct air capture technology.
The authors believe that if the emergency direct air intake program had started in 2025 և received an annual investment of 1.2-1.9% of world GDP, it would have eliminated 2.2-2.3 gigatonnes of CO2 20 13-20 in 2050 gigaton CO2: until 2075. Cumulatively, the program would remove 570–840 gigatonnes of CO2 from 2025–2100, which falls within the CO2 removal range required by the IPCC scenarios to meet the Paris targets.
Even with such a huge project, global temperatures will rise by 2.4–2.5ºC in 2100 without further reductions in global emissions from the current trajectory.
Investigate the reality of a fleet of CO2 purifiers in the sky
According to the authors, the DAC has features that may be attractive to policymakers if political pressures continue to mount to influence climate change, yet emissions reductions remain insurmountable.
“Policy makers can consider the value of installing a CO2 purifying liquid network. “The deployment can be controlled by governments, the companies that invest in them, their carbon emissions are controlled, they do not threaten the economic competitiveness of the existing industry,” he said. Hannah
From the Civil War to Operation Speed of Distortion, the authors estimate the financial resources available for emergency direct air capture deployment of more than $ 1 trillion a year, based on previous spending by the United States during the crisis.
The authors then built an indoor deployment model that builds, operates, հերթական retires the next grape harvest of DAC sprayers, taking into account available resources և the speeds at which direct air capture technologies can be improved over time. They link technological-economic modeling with climate models that calculate the effects of that deployment on the level of atmospheric CO2 concentration, the average global surface temperature.
With large financial resources devoted to the DAC, the study reveals that the ability to scale the DAC industry is a major factor limiting CO2 emissions. The authors point to the ongoing epidemic as analog. Although the FDA has authorized the use of coronavirus vaccines, there is still a huge logistical challenge to accelerate, effectively transfer, and disseminate new therapies to large sections of society. ,
Regular mitigation is still needed, even during wartime spending to combat climate change
“Simply deploying a critical air intake, even in the most extreme of technically feasible, can not replace conventional mitigation,” the authors write.
However, they note that the long-term vision of combating climate change requires a serious response to negative emissions.
“One of the implications of this finding for policymakers is the high cost of short-term deployment, even if societies today do not yet view climate change as a crisis, as short-term deployments increase future expansion,” they write. “Instead of avoiding direct air capture due to high time costs, the right political approach is the opposite.”
In addition, they note that such a large program could develop a new economic sector, creating a significant number of new jobs.
The authors conclude that it is time to disseminate research on direct air intake systems into real-world և deployment restrictions, especially in the context of acute political pressures that will arise when climate change is seen as a crisis.
Reference. Ryan Hanna, Ahmed Abdullah, Yangyang Sui եյ David G. Victor “Emergency deployment of direct air intake in response to the climate crisis”, 2021 January 14, Nature communications,
DOI: 10.1038 / s41467-020-20437-0: