Articles tagged with Atmospheric Carbon Dioxide
A new study using satellite data found that dryland ecosystems are experiencing escalating instability, with 80% of global drylands showing increased variability. This boom-and-bust dynamic threatens rain-fed agriculture and ecology, with implications for livestock production and rangeland management.
A new University of Washington study shows that past emissions from carbon majors will continue to impact the environment for decades to come. The research, published in PLOS Climate, highlights the long-term effects of fossil fuel emissions on global warming.
Under elevated CO2 levels, trees work with microbes to 'mine' soil nutrients, increasing nitrogen availability by 30%. This 'faster but tighter' cycle supports tree growth and productivity.
A new study found that global rice production nearly doubled between the 1960s and 2010s due to increased irrigation and nutrient inputs. Climate change reduced rice production by an estimated 7% between 2006 and 2015, but elevated atmospheric CO2 levels contributed to improved water-use efficiency and enhanced photosynthesis.
Researchers from Columbia University have developed a theory explaining how carbon dioxide cools the stratosphere, even as it warms Earth's surface and lower atmosphere. The study reveals that CO2 molecules interact with infrared light in a specific 'Goldilocks zone' that expands with increasing atmospheric CO2 levels.
A new catalyst converts carbon dioxide into carbon monoxide under mild conditions, offering a potential path toward future low-energy carbon recycling technologies. The catalyst uses vibrational energy to drive chemical reactions, boasting high efficiency and selectivity for CO conversion.
Researchers found that elevated CO2 levels can cause leaf temperatures to rise by up to 1.3°C in forests, with a greater impact during extreme heatwaves. This change is likely caused by reduced transpiration and could have significant effects on the water cycle globally.
The course explores the science of global carbon cycle, latest technologies and economic trade-offs of different approaches. It prepares professionals for a growing industry expected to become a €220 billion annual market by 2050.
A new study suggests that Amazon forest trees have increased in size by an average of 3.2% every decade over the past few decades. The research found that both large and smaller trees have benefited from increased atmospheric carbon dioxide, leading to a significant increase in tree size.
A growing body of research links environmental pollutants to worsened health and shorter life spans in childhood cancer survivors. The study found that only 25% of pediatric oncology providers felt comfortable discussing environmental pollutant impacts with patients.
The GOSAT-GW satellite has successfully launched with the TANSO-3 sensor, confirming its proper operation. The first observation by TANSO-3 provided spectral absorption data for carbon dioxide, methane, and nitrogen dioxide, enabling the calculation of greenhouse gas concentrations in the atmosphere.
New research claims adding lime to agricultural soils can remove CO2 from the atmosphere, rather than cause emissions. The study, based on over 100 years of data, shows that the addition of acidity is the main driver for CO2 emissions from soils.
Researchers at Georgia Tech have developed a low-cost method to remove CO2 from the air using extremely cold air and widely available porous sorbent materials. The approach could reduce the cost of capturing one metric ton of CO2 to as low as $70, approximately three times lower than current methods.
Researchers discovered that young secondary forests, aged between 20 and 40 years, exhibit the highest rates of carbon removal – locking away up to eight times more carbon per hectare than newly regenerating forests. Protecting existing young secondary forests offers immediate substantial carbon removal benefits.
Researchers propose a novel approach to reduce carbon emissions in cement manufacturing by leveraging iron naturally present in cement raw materials. The method enables the co-thermal conversion of CaCO₃ with CH₄ under a methane atmosphere, resulting in high-value syngas as a byproduct and significantly reducing carbon footprint.
A Yale-related nonprofit, Mati Carbon, has won the four-year, $100 million XPRIZE Carbon Removal competition with its method of crushed rocks to remove heat-trapping CO2 from the atmosphere. The process, called Enhanced Rock Weathering (ERW), also improves soil health for farmers.
A new study found that climate change may undermine the capacity of Arctic fjords to serve as effective carbon sinks, leading to a decline in sequestration carbon. Rapid changes are transforming fjord ecosystems, with phytoplankton communities shifting due to melting ice and warmer waters.
A study found that sediment resuspension triggered by trawling and natural processes releases significant amounts of CO2 into the atmosphere through pyrite oxidation. The research reveals that protecting sensitive seafloor areas with fine-grained sediments is crucial to maintain the region's carbon sink capacity.
Biomass is crucial for Europe's ability to reach its climate targets, providing both energy and negative emissions. Excluding biomass from the European energy system would increase costs by 169 billion Euros per year.
Computer simulations show that captured CO2 can be permanently stored underground by mixing with groundwater, creating a denser liquid that sinks and remains there. Suitable geological conditions, such as impermeable rock layers and porous aquifers, are necessary for effective CO2 storage.
A recent study found that volcanic ash from Kīlauea prompted a rare and large summertime phytoplankton bloom in the North Pacific Subtropical Gyre. The blooms were stimulated by iron and other trace elements in the ash, producing massive growth of nitrogen-fixing microbes and organic matter.
Virginia Tech aims to establish a hydrogen innovation hub using natural gas conversion technology, producing cleaner and more economically viable products. The project's goal is to reduce methane and carbon dioxide emissions by transforming potent greenhouse gases into less harmful high-value products.
Researchers at Northwestern University have developed new materials for direct air capture, making it cheaper and more scalable. The study found that certain materials, such as aluminum oxide and activated carbon, can capture CO2 efficiently, paving the way for more accessible carbon capture technologies.
Researchers at the University of Surrey developed a cost-effective method for removing CO2 from the air and converting it into synthetic fuel. The Dual-Function Material (DFM) process has been shown to be financially competitive with established industry methods, offering a promising route to decarbonize industries.
Researchers at Ohio State University have discovered a more efficient way to produce methanol from carbon dioxide, a cleaner alternative fuel. The new process uses a dual catalyst system, resulting in a 66% increase in efficiency and paving the way for sustainable technologies.
Researchers explore 'net-zero carbon debt' to track responsibility for climate overshoot, with implications for emission reduction targets and international cooperation. The study suggests that regions bearing greater debt should strengthen mitigation plans and establish support mechanisms.
A Chinese research team has developed an electrochemical process that can directly split CO2 into elemental carbon and oxygen. This innovative method uses lithium as a mediator to produce oxygen with a high yield of over 98.6%, significantly exceeding the efficiency of natural photosynthesis.
Researchers at North Carolina State University have developed a novel material that can convert carbon dioxide from the atmosphere into a liquid fuel. The material, called tincone, has both organic and inorganic properties, which improve its stability and electrochemical properties.
Researchers have optimized an electrochemical method called seawater splitting to trap and sequester carbon dioxide into stable solid mineral deposits. The method allows for maximal mineral yield with minimal energy use, making it a promising pathway for transforming carbon dioxide into useful substances.
A team of Rice and UH scientists discovered simple solutions to address a fundamental issue in carbon capture technology - carbon dioxide reduction reaction. They found that lowering the concentration of cations like sodium or potassium in the electrolyte slows down salt buildup, improving reactor stability.
Ancient bacteria can respire carbon dioxide and hydrogen into acetic acid to produce ATP. A new mechanism involving sodium ions is activated when acetic acid is produced, driving a molecular turbine that generates energy.
Researchers identify methyl halides as a potential sign of microbial life on Hycean planets with thick hydrogen atmospheres. The gas could accumulate in exoplanet atmospheres and be detectable from light-years away, offering an optimal strategy for the search for extraterrestrial life.
Scientists at the University of Birmingham warn that increasing CO2 levels could lead to a decrease in 'space sustainability' due to changes in the Earth's upper atmosphere. The research suggests that as the atmosphere cools, it contracts, reducing satellite density and potentially increasing the risk of collisions.
Researchers at Nagoya University found that Japan's concrete structures, including buildings and infrastructure, absorb around 14% of the CO2 emissions generated during cement production. This process, known as carbonation, enables concrete to function as a carbon sink, even though it absorbs less CO2 than forests.
A new study led by Colorado State University found that agricultural nitrogen fertilizer is the primary cause of seasonal carbon cycle swings. This discovery adds to scientific understanding of the carbon cycle and could help inform climate change mitigation strategies.
Researchers at SwRI and U-M have created a new methane flare burner using additive manufacturing and machine learning that eliminates 98% of methane vented during oil production. The burner's design, with a complex nozzle base and impeller, allows for efficient combustion even in challenging crosswind conditions.
A study by Florida Atlantic University investigated how removing dead wood could reduce wildfire risks and enhance carbon storage. The research found that combining physical harvesting with thinning significantly reduced wildfire risks, while lowering carbon emissions and offering carbon sequestration through products like biochar.
A new study from USC Dornsife finds that LA's urban greenery absorbs up to 60% of daytime fossil fuel CO2 emissions in spring and summer, providing valuable insights into the impact of trees on air quality. The research provides data-driven insights for future planting efforts and informs the USC Urban Trees Initiative.
Researchers will use airborne GPR and ground-based TEM to collect rich geophysical data, estimating carbon storage and gas emissions in peatlands across a latitudinal gradient. The project aims to reduce uncertainty in these predictions and provide valuable information on how to better protect carbon stocks.
A new study reveals that UK peatland fires are responsible for up to 90% of annual fire-driven carbon emissions, with emissions set to rise by at least 60% if the planet warms by 2°C. Researchers found that rewetting peatlands can help reduce carbon emissions and mitigate climate change.
Researchers from the University of Oxford challenge the long-held assumption that water temperature determines the efficiency of ocean carbon capture. The study highlights the need for standardized data collection methods and improved monitoring in polar regions to better understand this critical process.
Stanford researchers have developed a practical and low-cost method to remove atmospheric carbon dioxide from the air using common minerals. The new process, known as enhanced weathering, uses heat to transform silicates into materials that capture and store CO2, offering a potentially scalable solution to mitigate global warming.
A new study finds that methane emissions are being underreported by at least 170 million to 3.3 billion tons of carbon over a decade, depending on the metric used. Companies may have underestimated their carbon footprint by as much as the annual carbon emissions of the UK in 2022.
Scientists at UMass Amherst accurately quantify coastal carbon storage using satellites, revealing 10 million cars' worth of carbon stored in top meter of soil and an additional 15,000-worth each year. The results are crucial for a resilient, low-carbon future, highlighting the potential for salt marshes to mitigate climate change.
A recent report by Colorado State University reveals that the state's forests are emitting more carbon than they absorb, primarily due to insect and disease impacts. The study estimated that Colorado's forests stored 1,558 teragrams of carbon between 2010 and 2019.
A new Stanford study suggests refining how we assess natural carbon storage strategies to ensure the technology lives up to its potential as a climate change solution. The researchers propose a two-step evaluation process to unlock additional project value and improve data for predictive modeling.
Researchers found that constructed freshwater wetlands capture similar amounts of carbon over time, but neither has shown a net gain or loss since year 15. Despite this, wetlands remain a crucial ecosystem for sequestering carbon and providing habitat for species.
Research reveals that Eurasian Steppe grasslands are more susceptible to drought than North American Great Plains due to lower plant diversity. The study found a 43% reduction in annual productivity in Eurasia compared to a 25% reduction in North America under similar extreme drought conditions.
A recent University of Washington study found that a slower increase in atmospheric carbon dioxide levels has less impact on the Atlantic Ocean's circulation. The research, published in PNAS, suggests that this slowdown allows the ocean system more time to adapt to rising CO2 levels and mitigates its effects.
Laboratory experiments corroborate the theory that Titan maintains its nitrogen-rich atmosphere through internal heating of organic materials. The study found significant amounts of carbon gases like methane and nitrogen, supporting the existence of a geologically short-lived atmosphere.
Researchers identified an unknown family of microbes uniquely adapted to tropical peatlands, with a dual role in the carbon cycle. These microbes can either stabilize or intensify climate change by releasing greenhouse gases like CO2 and methane.
Researchers from Max Planck Institute for Chemistry explain how carbon nanoparticles degrade in vehicle exhaust gases, with temperatures influencing reaction pathways. The study's findings have implications for synthetic fuels production and environmental innovation.
A new study found that 34% of the Arctic-boreal zone is now a source of carbon, with fires and microbial activity contributing to emissions. The research provides a comprehensive assessment of carbon fluxes in the region, highlighting the importance of monitoring these processes.
Quinone-based carbon capture systems have been found to trap and release CO2 from the atmosphere through two distinct mechanisms. The study provides critical insights into the interplay of electrochemistry in these safer systems.
A collaborative project between ASU and industry partners aims to develop a regional Direct Air Capture Hub in the Four Corners area, with the goal of removing at least 1 million metric tons of CO2 from the atmosphere each year. The project will also create jobs, stimulate local economies, and support climate change mitigation efforts.
Researchers have debuted the first comprehensive gene expression atlas of the plant periderm at the single-cell level, providing new insights into phellem cells and their role in carbon storage. The atlas could be used to stimulate growth of the protective periderm in plants facing environmental stress due to climate change.
A new study published in Nature Communications provides fresh insights into China's carbon removal capacity through land-use, land-use change, and forestry. The researchers used an improved modeling approach to estimate the country's carbon removal from land-use changes, offering more accurate projections for future carbon removal.
Researchers analyzed global gross primary productivity trends over 1982-2016, finding a 68% decrease across 68% of the terrestrial surface. The decline is attributed to a reduction in the CO2 fertilization effect, which has negative effects on plant growth due to nutrient deficiencies.
Researchers estimate that human-made products store around 400 million tons of fossil carbon annually, equivalent to 9% of extracted fossil carbon. Recycling and increasing product lifetime can help reduce waste streams, while enacting policies to minimize landfill discharge is crucial.
Researchers have discovered a mismatched composition of gases in the planet's atmosphere compared to gases within the disk. The study found that the ratio of carbon and oxygen gases in the planet is much lower than expected, suggesting that current models of planet formation may be too simplified.