Climate Intervention Research Hampered by Political Obstruction, Scientists Warn
The escalating climate crisis demands innovative solutions, but critical research into methods for mitigating its effects—ranging from solar radiation modification to carbon dioxide removal—has been significantly hampered by political interference and funding cuts, according to leading scientists. As noxious fumes continue to pour from power plants and vehicles, releasing carbon dioxide that will linger in the atmosphere for millennia, the need for proactive intervention grows increasingly urgent.
The world may soon need to rely on climate interventions, sometimes referred to as geoengineering, to address the impacts of carbon emissions. These interventions fall into two primary categories: solar-radiation modification (SRM) and carbon-dioxide removal (CDR). SRM, the more controversial approach, proposes releasing aerosols into the stratosphere to slightly reduce the amount of sunlight reaching Earth. CDR, conversely, focuses on actively removing carbon dioxide directly from the atmosphere.
While SRM evokes images of blocking out the sun, experts clarify that the proposed approach would only reflect back a small percentage of sunlight. However, significant uncertainties remain regarding the long-term consequences of stratospheric aerosol injection, prompting legitimate concerns.
CDR is viewed as a more straightforward solution, directly addressing the buildup of atmospheric CO2. Scientists are working to refine these technologies, but scaling them to a meaningful level remains a challenge. Many scientists believe further study of SRM is warranted, even if controversial, in case it becomes necessary to avert the most severe effects of climate change. CDR, on the other hand, is already integrated into climate models used by organizations like the Intergovernmental Panel on Climate Change (IPCC) to project pathways toward achieving climate goals.
However, progress on both fronts has been impeded by the previous administration’s policies. Science funding cuts, personnel firings at agencies like the NOAA, and the elimination of key science programs have collectively stalled critical research.
“I had a grant that was awarded from NOAA, but they told me that they had no money to give me, and so that I couldn’t do it,” one researcher at Cornell University explained. “This was explicitly research for the program aimed at understanding and reducing uncertainties when it comes to model projections of geoengineering in the longer term.”
SRM, in particular, requires extensive research to determine the best methods for aerosol release and to accurately project potential environmental impacts. Some of this work can be accomplished through modeling, but on-the-ground research is also essential. As one environmental science professor at the University of Buffalo noted, “Solar geoengineering… would require a small fleet of airplanes or other mechanisms for lofting particles into the stratosphere that would circulate around the whole globe,” but “we really haven’t done enough research to understand what the implications would be.”
CDR also faces significant hurdles. While considered a necessary component of achieving climate goals, scaling the technology to a meaningful level and reducing costs remain major obstacles. “CDR is a kind of technology that if anybody could make it work at scale, which is completely unclear, it would be a good thing,” stated a professor of planetary physics at the University of Oxford. “It would be helpful.”
The setbacks extend to specific CDR techniques, such as direct air capture—machines designed to extract CO2 directly from the atmosphere—and methods for increasing the ocean’s capacity to absorb carbon dioxide. A professor of oceanography at the University of Hawaii explained that personnel cuts have severely impacted these efforts. “When they fired a whole bunch of people—the indiscriminate firing of people—these carbon-dioxide removal efforts were fairly nascent, and so a lot of the people were in their probationary periods,” they said. “They’re all gone.”
Direct air capture hubs in development have been jeopardized by Department of Energy funding cuts, and numerous other carbon removal projects face an uncertain future. The situation is further complicated by the administration’s simultaneous efforts to promote the fossil fuel industry. As one researcher concluded, “Nobody is sure what’s really happening,” and the resulting uncertainty is hindering research and development.
The curtailing of scientific advancement isn’t limited to renewable energy; it extends to the very interventions that may be crucial for navigating the escalating climate crisis. The lack of preparedness for potential future scenarios underscores the long-term consequences of undermining scientific inquiry. Hobbling science in America, ultimately, makes the world less prepared to confront the challenges that lie ahead.
