Articles tagged with Carbon Sinks
A new model suggests that certain forests become net carbon generators when defoliated, a shift that could impact climate change mitigation. The research uses computer simulations to estimate seasonal carbon exchange rates and find that deforestation can lead to a decline in carbon absorption by up to 25%.
Researchers estimate that echinoderms, including starfish and sea urchins, produce over a tenth of a gigatonne of carbon per year through calcifying their skeletons. This contribution is more significant than previously thought and must be taken into account in climate models.
New research reveals that European forests and grasslands can only compensate for 15% of the continent's carbon dioxide emissions from fossil fuel burning. Methane and nitrous oxide emissions from agricultural land and peat-lands cancel out almost all carbon sink, leaving a net effect of only 2%.
Global fossil fuel CO2 emissions increased by 29% between 2008 and 2000 due to growing coal use and international trade. The natural carbon sinks' efficiency has decreased, allowing more CO2 to remain in the atmosphere. This rise highlights the need for drastic reduction in global CO2 emissions.
Scientists warn that natural carbon sinks like forests and oceans are struggling to keep pace with increasing greenhouse gas emissions. This shift could lead to drastic consequences for climate change predictions.
Scientists and environmental groups see biochar as a powerful tool for replenishing soils and combating global warming. Biochar can capture up to 50% of the carbon stored in biomass and establish a significant carbon sink when used as a soil amendment.
The symposium explores carbon sequestration methods, including forest management, agriculture, and ocean carbon capture. Experts discuss the importance of addressing legal and regulatory challenges to ensure effective carbon sinks.
A multi-year study reveals that nutrients from the Amazon River spread beyond the continental shelf and drive carbon capture in the deep ocean. Diazotrophs, which pull nitrogen and carbon from the air, offset respiration in tropical oceans, making them a significant carbon sink.
A new study by Swedish researchers suggests that charcoal may not be as effective at sequestering carbon in soils as previously thought. The study found that adding charcoal to forest soil increased the growth of microorganisms, leading to significant losses of native soil organic matter and carbon.
A recent study published in Nature reveals that northern terrestrial ecosystems are losing more carbon dioxide through autumnal warming than they gain during spring, offsetting nearly 90% of increased carbon uptake. This finding highlights the critical role of autumn temperatures in determining the carbon balance of these ecosystems.
Researchers have found that less carbon is transported to deep water during natural plankton blooms than during the rest of the year, suggesting the Biological Pump leaks. This discovery challenges ocean fertilization schemes, which ignore natural processes and may not remove as much carbon dioxide from the atmosphere.
A recent study suggests that northern forests absorb less carbon than previously thought, with intact tropical forests taking up a larger proportion of the atmosphere's carbon dioxide, partially offsetting industrial emissions and deforestation.
The Southern Ocean's ability to absorb carbon dioxide has weakened substantially over the past 25 years, with a 15% decrease per decade since 1981. Human activities are the primary cause of this weakening, which will lead to higher atmospheric carbon dioxide levels in the long-term.
UNH researchers created the most comprehensive global land-use history description to assess impacts on carbon and climate models. The study reveals that 42-68% of the global land surface has undergone substantial changes due to historical land-use practices, affecting carbon sinks and ecosystems.
Research reveals that changes in aerosol levels affect the type of landscape, with forests and croplands becoming carbon sinks due to increased shade, while grasslands become sources. The study suggests that aerosols alter the ground surface temperature, affecting photosynthesis rates.
Researchers suggest using geological carbon sinks to capture and store carbon dioxide from power plant emissions, providing an additional strategy to reduce greenhouse gases. Atmospheric carbon dioxide levels have reached an all-time high of 380 parts per million, a 36% increase since pre-industrial times.
Robotic Carbon Explorers tracked fertilized waters with over four-fold plankton growth, contrary to expectations that lack of silicates would limit growth. The study suggests a significant role for iron in fixing carbon dioxide in the ocean.
Researchers found that large volcanic eruptions, like the 1991 Pinatubo eruption, can temporarily cool the Earth and reduce plant growth due to increased aerosols in the atmosphere. This 'greener greenhouse' effect is partly caused by reduced sunlight and carbon dioxide emissions.
A new study by top carbon scientists reveals that terrestrial carbon sinks will not operate steadily into the future due to the temporary nature of key processes. The sinks, which currently absorb excess carbon dioxide, are expected to diminish with time as forests mature and other factors saturate.