Expansion of agricultural land reduces CO2 absorption
Changes in land use significantly impact CO2 storage in vegetation and atmospheric concentration. Deforestation can lead to reduced capacity for plants and soil to absorb CO2.
Carbon Emissions
Articles tagged with Carbon Emissions
Urban greenways can reduce neighborhood carbon emissions
A new study by UBC researchers reveals that urban greenways can significantly reduce daily car travel distances and resulting carbon emissions. Participants living within 300 meters of Vancouver's Comox-Helmcken Greenway showed an 18% decrease in car travel, while those farther away experienced increased motorized travel.
Higher ambition needed to meet Paris climate targets
A study by the European Commission Joint Research Centre found that even with strong efforts, residual carbon emissions will reach over 1000 gigatons by the end of the century, exceeding the level needed to achieve the 1.5°C target. Accelerated energy efficiency improvements and electrification are necessary to limit warming.
Global warming may be twice what climate models predict
Researchers found that past warming events suggest climate models underestimate long-term warming and amplification of warmth in polar regions. Sea levels may rise six meters or more even if the world meets the 2°C target, according to an international team of researchers from 17 countries.
Heavy-duty emissions must be eliminated to halt climate change, UCI-led review shows
A UCI-led review emphasizes the need to redesign heavy-duty infrastructure to eliminate carbon dioxide emissions. Key solutions include the production of renewable materials, capturing and storing CO2, and integrating power and manufacturing facilities.
Path to zero emissions starts out easy, but gets steep
To achieve zero emissions, air travel, freight shipping, cement, and steel manufacturing must be decarbonized. New technologies, such as hydrogen fuels and carbon capture, can help overcome these challenges.
Clean power is not enough
International team of researchers warns that even with stringent climate policies, residual fossil fuel emissions could still cause CO2 emissions to endanger the climate targets agreed on by the international community. The study highlights the need for accelerated energy efficiency improvements and widespread electrification of energy...
Lessons about a future warmer world using data from the past
Researchers analyzed past warm periods to understand potential future climate changes. They found that ecosystems and climate zones will shift poleward or to higher altitudes, potentially releasing additional greenhouse gases and leading to sea-level rise.
'Electrogeochemistry' captures carbon, produces fuel, offsets ocean acidification
Scientists have created an 'electrogeochemical' method that captures carbon dioxide from the atmosphere while producing hydrogen gas for use as fuel. The technology also counteracts ocean acidification by converting carbon dioxide into a dissolved mineral bicarbonate already abundant in the ocean.
US methane emissions greater than thought, in recent years?
Researchers estimate US methane emissions from oil and gas supply chains are greater than thought, with emissions in 2015 about 60% higher than EPA estimates. The discrepancy is likely due to existing inventory methods not capturing abnormal operating conditions like malfunctions.
New study finds US oil & gas methane emissions 60 percent higher than estimated
A new study by the University of Colorado at Boulder estimates US oil and gas methane emissions are 60% higher than previously thought, with most emissions coming from leaks and equipment malfunctions. The study finds that repairing these leaks could reduce emissions by an estimated $2 billion annually.
Two-faced South Asian monsoons both propagate and purify pollution in the air
Summer monsoons in South Asia purify the air of certain pollutants by oxidizing them into less volatile products, which then exit the atmosphere through rain. However, these monsoons also disperse other pollutants globally through a massive anticyclone circulating above the region.
When the river runs high
A massive world-wide study of dry riverbeds has found they're contributing more carbon emissions than previously thought. The contribution of intermittent rivers and streams to the process of carbon cycling is largely ignored, but new data suggests this may be higher than initially estimated.
How to save Antarctica (and the rest of Earth too)
A new study warns that Antarctica's ecosystem is under threat due to climate change, with a metre of global sea level rise predicted if drastic action is not taken. Reducing greenhouse gas emissions and implementing effective regulations could mitigate this impact.
30 percent of the UK's natural gas could be replaced by hydrogen, cutting carbon emissions
Researchers from Swansea University found that enriching natural gas with hydrogen is a promising way to reduce UK carbon dioxide emissions. By increasing the hydrogen content to 30%, domestic carbon emissions could be reduced by up to 18% without requiring any changes to appliances.
How to suck carbon dioxide from the sky for fuels and more
Direct air capture technology captures CO2 from the atmosphere and converts it into fresh fuels, reducing carbon footprint of transportation with minimal disruption. The resulting fuels are compatible with existing infrastructure and have ultra-low life cycle carbon intensities.
Research reveals how the same foods create markedly different environmental impacts
Researchers at Oxford University and Agroscope found large differences in environmental impact between producers of the same product. A plant-based diet can reduce greenhouse gas emissions by up to 73% and global agricultural land use by ~3.1 billion hectares, according to a new database.
A new device for detecting gas leaks has been developed
A new device developed by Sensia Solutions can detect gas leaks and measure their amount, providing a solution to this problem at an affordable price. The technology has the potential to reduce the carbon footprint from gas leaks by up to 70%.
New study estimates the carbon footprints of 13,000 cities
A new study surveyed the carbon footprints of 13,000 cities worldwide, finding that the top 100 highest-footprint cities contribute to approximately 20% of global emissions. By targeting these concentrated emission hotspots, local mayors and governments can significantly reduce national total carbon footprints.
Kicking the car(bon) habit better for air pollution than technology revolution
The study, led by Dr Christian Brand, finds that both lifestyle change and zero-emission technologies are needed to meet Scotland's 80% carbon reduction target by 2050. Lifestyle changes such as walking, cycling, and using clean public transport can show quicker results than gradual transitions to electric vehicles.
Magic in metal could help put excess carbon dioxide to good use
Researchers have discovered a way to harness bismuth's unique property, called catalytic plasticity, to convert carbon dioxide into liquid fuels and industrial chemicals. This approach could potentially provide sustainable routes to making fuels and reduce greenhouse gas emissions.
Long-term study shows crop rotation decreases greenhouse gas emissions
Crop rotation has been shown to decrease greenhouse gas emissions by up to 35% compared to continuous corn or soybean. Rotating crops also increases yield benefits of over 20%, with tillage not affecting emissions. The study highlights the importance of crop diversification and soil management in reducing environmental impact.
Streams may emit more carbon dioxide in a warmer climate
A new study found that streams and rivers could increase carbon dioxide emissions at higher temperatures, potentially compounding the effects of global warming. The research team analyzed data from six major climatic zones across the globe and found a 24% shift toward more respiration and CO2 emissions.
New catalyst upgrades greenhouse gas into renewable hydrocarbons
A University of Toronto engineering team has designed a most efficient and stable process to convert climate-warming carbon dioxide into ethylene, a key chemical building block for plastics. The breakthrough catalyst uses a thin copper-based material and improves energy efficiency and selectivity.
An electronic rescue dog
Researchers at ETH Zurich developed a device that combines multiple gas sensors to detect entrapped people. The device, the size of a small computer chip, can identify specific chemical compounds emitted by humans and distinguish them from other sources.
Astonishing effect enables better palladium catalysts
Researchers at TU Vienna found that support materials can significantly impact chemical reactions on large palladium grains. The discovery could lead to the development of more effective automotive catalytic converters by reinforcing the weak point of the grain, where carbon monoxide poisoning starts.
New phase of globalization could undermine efforts to reduce CO2 emissions
A new study found that global carbon production from Chinese exports has slowed or reversed, as developing countries shift trade among themselves. The growth of South-South trade has more than doubled between 2004 and 2011, leading to a surge in CO2 emissions in regions like Vietnam and Bangladesh.
Climate geoengineering research should include developing countries
Scientists from 12 countries urge caution on climate geoengineering, warning it may do more harm than good. Developing countries are most vulnerable to climate change and geoengineering's unintended consequences, including acidification of the ocean and disruptions to biodiversity.
Carbon satellite to serve as an important tool for politicians and climate change experts
A new satellite measuring carbon balance will aid experts and politicians in addressing climate change, while providing detailed emissions data by country. The tool helps track the impact of deforestation and drought on CO2 emissions, crucial for the UN's work on reducing greenhouse gases.
Global tourism carbon footprint quantified in world first
A comprehensive study by the University of Sydney reveals that global tourism is a major contributor to greenhouse gas emissions, with small islands and luxury travel being key drivers. The research estimates that tourism-related emissions are four times greater than previous estimates and are growing faster than international trade.
Weeds take over kelp in high CO2 oceans
New research from the University of Adelaide shows that weedy marine plants will dominate coastal habitats in high CO2 conditions, replacing kelp forests that support higher biodiversity. Small weedlike species will fuel their growth due to carbon emissions, allowing them to outcompete and outgrow kelps.
Changing cities' food systems to help reduce carbon emissions
Researchers found that increasing urban agriculture, switching to renewable energy, reducing retail and consumer food waste, and adopting plant-based diets can significantly cut greenhouse gas emissions. By implementing these measures, cities can achieve a substantial reduction in their carbon footprint.
Environmental impact of electric vehicles in China? It depends on how they are charged
Researchers found that private electric vehicles can reduce CO2 emissions by incentivizing slow charging, while electrifying buses and taxis is the most effective option for improving air quality in Beijing. The study's strategy aims to maximize the benefits of renewables by managing vehicle charging.
World-first synthesis of globalization effects on people and planet
A world-first study synthesizes globalization effects on people and planet, revealing increased child labor, environmental degradation, and inequality in developing countries. The research highlights the displacement of wealth-driven consumption into offshore production, compromising the achievements of Sustainable Development Goals.
US gains in air quality are slowing down
A new study reveals that US improvements in air quality are slowing down, making it challenging to meet ozone pollution goals. The slowdown is attributed to slower-than-expected reductions in emissions from industrial and commercial sources.
New natural gas catalyst would boost clean transportation
A new natural gas catalyst aims to reduce methane emissions from vehicle exhaust, a potent greenhouse gas. The US Department of Energy-funded project will develop and optimize a lower-cost, more efficient catalyst to eliminate unreacted methane, making natural gas a cleaner-burning fuel option.
Study: Health benefits will offset cost of China's climate policy
A new MIT study estimates that China's climate policy would improve air quality and human health, saving $339 billion in health costs by 2030. The researchers used a new modeling approach to simulate the effects of different policy scenarios on provincial air quality and public health.
Carbon capture could be a financial opportunity for US biofuels
Researchers at Stanford University have found cost-effective carbon capture and sequestration (CCS) technologies commercially feasible with existing technology in the US. CCS can be profitable through tax credits and low-carbon fuel standards, incentivizing its deployment to meet climate goals.
First global carbon dioxide maps produced by Chinese observation satellite
The Chinese observation satellite TanSat has produced its first global carbon dioxide maps, providing valuable data for future climate change research. The maps show a seasonal decrease in carbon dioxide concentration from spring to summer in the Northern Hemisphere and emission hotspots due to anthropogenic activity.
Actual fossil fuel emissions checked with new technique
A team of researchers led by Imperial College London has developed a new technique to estimate CO2 emissions from fossil fuels using atmospheric measurements. The study found that the reported and actual emissions matched up well in California, suggesting the technique could be used globally.
Swansea scientists discover greener way of making plastics
Researchers at Swansea University's Energy Safety Research Institute have found a way to convert CO2 into ethylene, the basis of making plastics, at room temperature. This process has the potential to offset global carbon emissions and utilise half a billion tonnes of emitted CO2 annually.
Carbon taxes can be both fair and effective, study shows
A study by researchers at MIT and NREL found that carbon taxes can be an effective way to curb emissions of greenhouse gases. The analysis showed that depending on the exact mechanism chosen, such a tax can also be fair and not hurt low-income households. The most efficient way to achieve reductions in terms of overall impact on the ec...
Trap, contain and convert
Scientists at Washington University in St. Louis have developed a new method to convert CO2 into a solid inert mineral in basalt, which holds promise as an effective abatement agent for reducing greenhouse gas emissions. The research revealed that 47 kilograms of CO2 can be converted into mineral inside one cubic meter of basalt.
US power sector carbon emissions intensity drops to lowest on record
The Carnegie Mellon Power Sector Carbon Index reports a 26.8% decline in emissions intensity from 2005 levels, with natural gas and renewables displacing coal as primary energy sources. The index also provides regional insights and international expansion, offering objective data for policy makers and regulators
Your wood stove affects the climate more than you might think
A Norwegian study reveals that wood stove emissions have a complex effect on the climate, with black carbon being the primary warming agent. The research suggests that reducing soot emissions from wood stoves could also improve air quality and mitigate health risks.
Ice-free Arctic summers could hinge on small climate warming range
New University of Colorado Boulder research suggests that limiting warming to 2.7 degrees Fahrenheit would reduce the likelihood of an ice-free Arctic summer to 30 percent by 2100. In contrast, warming by 3.6 degrees Fahrenheit would make at least one ice-free summer certain.
Once we can capture CO2 emissions, here's what we could do with it
A team of Canadian and US scientists propose converting CO2 into small building block molecules that can be upgraded for commercial use. Potential applications include energy storage in hydrogen, methane, and ethane; production of consumer goods using ethylene and ethanol; and pharmaceuticals using CO2-derived formic acid.
Automated electric taxis could help reduce greenhouse gas emissions and costs
Researchers developed a model to test the cost and capabilities of a fleet of shared, automated electric vehicles in New York City. The study found that about 6,500 vehicles could be sustained on 1,500 medium-power electric vehicle chargers across Manhattan, resulting in a 33,000-ton reduction in carbon dioxide emissions per year.
Rapid emissions reductions would keep CO2 removal and costs in check
To stabilize the climate, governments must undertake huge efforts of halving emissions by 2030 and achieving emission neutrality by 2050. Removing CO2 from the atmosphere through technical methods comes with risks and uncertainties.
Global carbon emissions could be cut 3 percent by following the UK's example
A study suggests that using existing natural gas infrastructure to replace coal in power plants can significantly reduce global carbon emissions. The UK's approach, which has already cut its emissions by 25%, could be emulated globally to achieve a 3% reduction in annual emissions.
New research shows fertilization drives global lake emissions of greenhouse gases
A new study published in Limnology and Oceanography Letters shows that lake size and nutrients significantly impact greenhouse gas emissions from lakes into the atmosphere. The research found that methane, emitted from lakes in bubbles, is the dominant greenhouse gas coming from lakes globally.
Reconciling Paris Agreement goals for temperature, emissions
Scientists found that meeting temperature targets without overshooting may not require zero emissions, while drastic cuts in emissions can stabilize warming at 1.5 or 2 degrees C. The timing of emission reductions matters significantly.
Study links climate policy, carbon emissions from permafrost
A new study published in PNAS suggests that controlling greenhouse gas emissions could substantially reduce the consequences of permafrost thawing, but failing to do so would result in significant carbon releases. The research found that even with low emission scenarios, permafrost loss and soil carbon changes are still substantial.
Britain's emissions dropped by 6 percent in 2016 by switching from coal to natural gas
A study from the University of Sheffield found that a rapid switch from coal to natural gas in Britain resulted in a 6% decrease in emissions. The key factor behind this reduction was effective carbon pricing, which incentivized the fuel switch.
20 percent of Americans responsible for almost half of US food-related greenhouse gas emissions
A new study found that 20% of American diets account for 46% of total diet-related greenhouse emissions, with high beef consumption contributing 72% of the difference. Shifting to more plant-based diets could reduce emissions by nearly 10%.
Forestry and carbon sequestration in Oregon
Researchers developed a framework to assess forest management strategies in Oregon, finding that these approaches increased net ecosystem carbon balance by 72% from 2011-2015. By 2100, the strategies resulted in a 56% increase in NECB, with benefits for water availability and biodiversity.
Cutting carbon emissions sooner could save 153 million lives
A new study projects that cutting carbon emissions sooner could avoid up to 153 million premature deaths globally, with the greatest gains in Asia and Africa. Cities like Kolkata and Delhi, India, could see up to 4.4 million projected saved lives.
Environmentally friendly cattle production (really)
A Michigan State University study evaluated adaptive multi-paddock, or AMP, grass-fed operations and found that they can potentially offset greenhouse gas emissions. The research also showed that the finishing phase of beef production could be a net carbon sink, with carbon levels staying in the green rather than in the red.
Climate change threatens world's largest seagrass carbon stores
The loss of seagrass meadows at Shark Bay has released up to nine million metric tons of carbon dioxide, equivalent to the annual CO2 output of 800,000 homes. Seagrass ecosystems are crucial for storing carbon, and climate change is compromising their permanence.
Climate change threatens world's largest seagrass carbon stores
Researchers estimate that Shark Bay has the largest carbon stores reported for a seagrass ecosystem, containing up to 1.3 percent of the total carbon stored in seagrass soils worldwide. The loss of seagrass at Shark Bay after the 2010-2011 marine heat wave released up to 9 million metric tons of CO2 into the atmosphere.