Articles tagged with Carbon Cycle
A type of carbon from plant waxy material has been accumulating in soils for 11,000 years, challenging current models of the Earth's carbon cycle. This resilient carbon pool is thought to be responsible for long-term carbon storage on land and may play a role in offsetting increasing greenhouse gas emissions.
Scientists have uncovered the complete genome sequence of Ostreococcus tauri, a tiny eukaryote that plays a significant role in ocean climate dynamics. The study reveals the organism's complex genetic makeup and its ability to perform photosynthesis, which has major implications for carbon cycling.
A recent study using high-resolution stable-isotope analysis from 95-million-year-old fossilized wood found that the mid-Cretaceous period was not a super-greenhouse, but rather had a short-lived glaciation. This new information may help us understand how the biosphere will respond to human-generated alterations of CO2 concentration.
Researchers studied hurricane-force wind estimation using synthetic aperture radar and found a newly-developed model outperforms previous methods. Additionally, weakened thermohaline circulation led to increased snow cover over Europe due to reduced atmospheric circulation and changed climate influences. The Arctic Ocean's change also ...
The new ice core analysis provides insights into Antarctic climate and greenhouse gas concentrations during the most recent warm period, known as Marine Isotope Stage 11. This analog warm period occurred between 420,000 and 400,000 years ago and shares similarities with our current warm period due to similar Earth-Sun configurations.
A new study reveals that the SAR11 microbe's streamlined genome is key to its dominance in oceans, recycling organic carbon and supporting 50% of global photosynthesis. With a compact genetic makeup, SAR11 can survive in low-nutrient environments and efficiently reproduce by consuming dissolved organic matter.
Researchers found an enzyme in marine diatoms that uses cadmium, a scarce element in the ocean. This discovery has implications for understanding the global carbon cycle and climate change.
Shrubs in Arctic regions promote deeper snowdrifts, warming soil and boosting microbial activity. This leads to increased nutrient availability, promoting rapid shrub growth and expansion.
Researchers at UCSB discovered a correlation between Southern Ocean cooling and the expansion of Antarctic ice sheets around 14 million years ago. The study suggests that changes in global carbon cycling played a crucial role in this process, providing insight into the dynamics of Earth's climate system.
A team of U.S. and German scientists used carbon-14 dating techniques to determine that most Arctic carbon is young and unlikely to affect the global climate balance. However, they warn that an Arctic warming trend could lead to the release of ancient carbon, enhancing the greenhouse effect and accelerating global warming.
Research suggests that gas hydrates, formed in deep-sea sediments, contain massive amounts of methane, a potent greenhouse gas. These hydrates can charge and discharge variable amounts of methane constantly, responding to factors not yet understood. This finding necessitates a revised view of the carbon cycle.
Researchers found that graphitic black carbon resists conversion to other forms, such as combining with oxygen to form carbon dioxide. This resistance affects carbon cycle calculations, leading to significant overestimates of burial of combustion-derived black carbon in marine sediments.
Researchers from NASA and universities worldwide found that El Nino events led to significant increases in greenhouse gas emissions from fires globally. The majority of the increase occurred in Southeast Asia, with other regions like Central and South America also experiencing increased emissions.
A new climate model, ALL, integrated multiple factors into a single experiment, recreating observed temperature records for the 20th century. The model predicts increased global warming of 5.5 degrees Celsius by the end of the 21st century when sulphate emissions reductions are considered.
The UCI-based center will utilize mass spectrometry to measure radiocarbon in plants, soils and ocean coral, providing insights into the global carbon cycle. This technology enhances Earth system science research and strengthens UCI's interdisciplinary scientific study capabilities.
Keeling's 45-year curve of atmospheric carbon dioxide, known as the 'Keeling curve,' has been a crucial dataset in understanding global climate change. His work has also shown that the oceans play a significant role in modulating atmospheric carbon dioxide concentrations.
Scientists have discovered a significant component of the ocean's carbon cycle, with photosynthetic bacteria found in virtually every surface water sample. These aerobic photoheterotrophic bacteria can produce organic matter and supply up to 40% of their energy from sunlight.