Articles tagged with Atmosphere
Researchers propose reducing atmospheric pressure to extend Earth's lifespan by 1.3 billion years, doubling the chances of finding intelligent life elsewhere. This mechanism could occur on any extrasolar planet with an atmosphere and biosphere.
Scientists have discovered magnetic tornadoes on Mercury that could be replenishing its extremely thin atmosphere. These 'tornadoes' form when magnetic fields carried by the solar wind connect to Mercury's magnetic field, twisting into vortex-like structures.
Researchers found that a surge in atmospheric methane gas 11,600 years ago was more chemically consistent with an expansion of wetlands rather than a large-scale melting of frozen methane deposits. This discovery suggests that wetland regions may have played a significant role in regulating global warming during past events.
Research finds that atmospheric pollution has enhanced global plant productivity by up to a quarter since 1960, leading to a 10% increase in carbon stored by the land. This unexpected effect occurs due to increased diffuse radiation reaching the Earth's surface under hazy conditions.
Lead from human activities causes clouds to form at warmer temperatures with less water, altering rain and snow patterns. The presence of lead also changes the distribution and density of clouds, affecting the amount of earth's heat that escapes into space.
The Hypersonic Control Modeling and Simulation Tool (HyperCMST) will be used for control studies of planetary atmospheric entry and descent, aerodynamic orbital capture, and aerodynamic gravity assist. The tool allows engineers to model optimal control trajectories for hypersonic vehicles.
Researchers found a drop in dissolved nickel in seawater around 2.7 billion years ago, which could have led to the Great Oxidation Event. This event increased oxygen levels dramatically, changing the Earth's surface environment and making advanced life possible.
The US and Portugal have signed an agreement to launch a portable climate observatory on Graciosa Island in the Azores, which will measure cloud and aerosol properties for 20 months. This study aims to enhance scientific understanding of low-level marine clouds and improve climate models.
Researchers found evidence of abundant oxygen in ancient ocean and atmosphere, dating back 3.46 billion years. The discovery suggests early life forms like cyanobacteria produced oxygen 3.46 billion years ago.
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.
A new detection technique using polarized light helps accurately measure aerosol composition, size, and global distribution. The Aerosol Polarimetry Sensor instrument measures aerosols over land, providing greater accuracy compared to previous methods.
Dr. Rosalind Rickaby, a biogeochemist at Oxford University, has been awarded the 2009 Rosenstiel Award for her groundbreaking research on marine phytoplankton and their impact on the Earth's climate. Her innovative approaches are helping to establish a record of the influences these microorganisms have had on the planet.
A University of Michigan researcher has developed a method to reconcile data on greenhouse gas sources and sinks, improving the accuracy of climate predictions. By analyzing atmospheric sampling locations and satellite data, she aims to predict how carbon levels will evolve in the future.
Researchers observed the intense heating of HD 80606b as it swung close to its star, providing clues to its atmospheric properties. The data enabled the creation of realistic images of the planet using computer simulations.
A team of NASA and university scientists has detected methane in the Martian atmosphere, indicating the planet may be biologically active. The discovery was made using spectrometers at the Infrared Telescope Facility and W.M. Keck telescope, revealing three spectral features that are a definitive signature of methane.
Wallace Broecker, a renowned geochemist, receives the Frontiers of Knowledge Award for his pioneering work on ocean-atmosphere interactions and early warnings about climate change. He will donate the $527,000 prize to support research on climate change.
The Nonhydrostatic ICosahedral Atmospheric Model (NICAM) successfully simulated the lifecycles of two real tropical cyclones. The model's realistic representation of clouds and atmospheric conditions allowed it to reproduce the birth, path, and evolution of the observed cyclones.
Researchers found evidence of increased greenhouse gases in ancient ice core records, suggesting that human influence on climate started with large-scale agriculture and deforestation. The study challenges the traditional view that the Industrial Revolution marked the beginning of human-induced climate change.
Researchers are exploring the possibility of life on giant, cold planets called Super-Earths that could harbor a liquid ocean beneath their icy surface. The team uses a novel approach involving gravitational microlensing to detect these potentially habitable worlds.
Astronomers have discovered carbon dioxide on a Jupiter-sized planet orbiting another star, HD 189733b. The detection is significant as it could be a sign of biological activity, and further studies will focus on characterizing the planet's atmosphere to determine its habitability.
The new system, AMSTAR, will provide NCAR with up to 30 petabytes of storage capacity and enable scientists to conduct increasingly sophisticated computer studies of Earth's climate. The system is based on the Sun StorageTek SL8500 Modular Library and will allow NCAR to store its valuable scientific data for the next 15-20 years.
Scientists from 40 institutions participate in an international field experiment to collect real-time data on the southeastern Pacific's climate system. The study aims to improve global climate models and better predict Earth's climate.
The new global carbon budget shows unprecedented acceleration of CO2 emissions and atmospheric accumulation, with natural sinks growing slower than emissions. Decreasing forest cover mainly due to deforestation is responsible for a significant portion of emissions, while oceans' carbon uptake has decreased by 10 million tons.
Researchers found a 50 km wide atmospheric chemical equator in cloudless skies of the Western Pacific, dividing pollutants between the two hemispheres. The discovery will aid pollution mapping and climate assessment by improving simulations of pollutant transport.
Boston University's John T. Clarke leads an engineering and astronomy team on NASA's MAVEN mission to study Martian atmosphere changes. The team aims to solve the mystery of Mars' lost atmosphere, exploring possibilities of water's escape or freezing into the planet's crust.
NJIT physics professor Andrew Gerrard has installed a 1.2-meter diameter telescope atop Jenny Jump Mountain, allowing amateurs to observe the heavens at professional levels. The telescope will also aid researchers in studying gravity waves affecting earth's circulation and climate change.
The Blanco Transform Fault Zone has experienced over 1,500 earthquakes of magnitude 4.0 or greater in the past 40 years, with many thousands of smaller quakes. The region's tectonic stress may affect the Cascadia Subduction Zone, potentially leading to a major earthquake.
A new observational study describes the world's weather patterns and climate influences by revealing four distinct atmospheric circulation cells. The cells create temperature and wind distribution in the mid-latitudes, including the UK, Europe, and US, which was previously not fully understood.
Researchers at Arizona State University have made a breakthrough in understanding the effect of brown carbon on climate change by developing a novel technique to measure its optical properties. This discovery could lead to more accurate forecasting of global warming activity, as current models often overlook this key component.
Researchers discovered an extreme cooling event 12,700 years ago in Western Europe, with sediments revealing a short-term shift in atmospheric circulation. The findings suggest the climate system is not fully understood, with many puzzles remaining to be solved.
Massive underwater volcanic eruptions occurred 23 thousand years before a global oceanic anoxic event, leading to the extinction of ocean life. The eruptions released nutrients and oxygen-depleting gases, causing a chain reaction that ultimately led to the mass extinction.
The article proposes merging NOAA and USGS to create an independent Earth Systems Science Agency (ESSA) to address climate change, freshwater availability, and biodiversity loss. The new agency would have a comprehensive perspective on both environmental and resource systems.
A study of a Greenland ice core has shown that two temperature spikes prior to the last ice age were tied to fundamental shifts in atmospheric circulation. The research found abrupt warming events that occurred suddenly, challenging modern societies' ability to adapt, and provided insights into the sequence of climate change
Researchers analyzed Greenland ice cores to understand sudden climate changes at the end of the last ice age. The results show that climatic shifts occurred rapidly over just a few years, with dramatic changes in temperature and atmospheric circulation.
A new study by an international team of scientists found that around one-third of the nitrogen entering the world's oceans from the atmosphere is man-made. This has significant implications for global climate change as it leads to increased marine biological activity and CO2 uptake, producing nitrous oxide emissions.
Scientists have discovered ice core data showing low CO2 levels and methane fluctuations that match temperature curves. The findings provide insight into climate history and help develop models for future climate changes.
Researchers found that pointed wingtips and reduced weight per wing area reduce flight costs for migratory birds. Climate change may exacerbate this effect, altering bird migration patterns and energy budgets.
Scientists have detected polarized glow in Northern Lights, revealing clues to the composition of Earth's upper atmosphere and magnetic field configuration. The phenomenon also offers a way to determine magnetic field configurations on other planets.
Researchers like Brad Marston use statistical physics to analyze climate patterns, providing insights into the driving concepts behind global warming. By focusing on the larger mechanisms that drive changes in rainfall, scientists can improve their understanding of climate change and its effects.
The crew will make groundbreaking measurements to explain how huge fluxes of climate-affecting gases move between atmosphere and sea. The Southern Ocean, comprising 30% of global seas, is a source of great uncertainty in the global system.
A study on Mercury's gravity reveals a comet-like tail extending over 2.5 million kilometers away from the planet. Meanwhile, research finds that rising carbon dioxide levels are linked to increased ground-level ozone concentrations, harming lung function and respiratory systems.
Scientists will embark on a six-week research expedition to measure turbulence, waves, and bubbles in the Southern Ocean to improve the accuracy of climate models. The goal is to understand how gases important to climate change move between the atmosphere and ocean under high winds and seas.
Stan Kidder, a CIRA researcher, has contributed to a new book celebrating 50 years of Earth observations from space. The book highlights the significant contributions satellites have made to weather forecasting, providing capabilities that were not possible before satellites, such as predicting tropical storms and severe weather events.
Research into giant perturbations on Jupiter reveals that jet streams go deep into the planet's atmosphere, with storms forming among deepest clouds. The team used a combination of telescopes to observe the phenomenon, finding surprising similarities with previous cases.
New seismic images of the Chicxulub crater suggest the asteroid that killed the dinosaurs landed in deeper water than previously thought. This led to a larger release of water vapor into the atmosphere, which could have exacerbated the effects of acid rain and climate change.
An international team of astronomers has successfully detected and monitored the polarized light scattered in an exoplanet's atmosphere for the first time. The study reveals that the exoplanet, HD189733b, has a swollen atmosphere with particles scattering blue light, similar to Earth's atmosphere.
Researchers at CU-Boulder predict wetter storms in the Arctic and mid-latitudes due to global warming, with increased precipitation over individual storms but no clear trend in net precipitation. Higher CO2 levels warm the atmosphere, leading to more water-holding capacity and increased storm moisture content.
Researchers at UCL have identified a critical point of no return for gas giants, beyond which their atmospheres become unstable and rapidly expand. At this threshold, the cooling mechanism breaks down, leading to catastrophic consequences.
University of Wisconsin-Madison scientists have found that a basin-wide circulation pattern drives Atlantic hurricane activity. The study reveals that Atlantic hurricanes will be more sensitive to climate changes than storms in other ocean basins, with warmer oceans indicating ideal conditions for development. Understanding this relati...
The EUCAARI project aims to improve knowledge on the impact of fine particles on climate and air quality. A global network of measuring stations, including those in Brazil, South Africa, China, and India, will collect data on European air through both ground-based and airborne measurements.
Researchers at Ohio State University found evidence that the Earth's atmosphere may have supported an oxygen-rich environment half a billion years ago. This oxygen surge could have triggered a rapid diversification of life on Earth during the late Cambrian period.
Researchers at the University of Washington have devised a theory that links uncertainty in climate change with climate sensitivity. The theory, published in Science, provides a yardstick for testing climate models and shows that small uncertainties can be amplified into large ones.
A new study reveals that the ocean was able to store more CO2 during the ice age than it can today. The team measured carbon isotope signatures in sea bed sediments and found that deep Pacific water has not been at the surface for over 2,000 years.
A new study estimates that US forest fires release about 30% of the nation's total mercury emissions, primarily affecting the environment and human health. The Southeast region emits the most mercury, followed by Alaska and California, highlighting the need for better protection measures.
A new report highlights the ongoing debate over climate change models, with scientists emphasizing the importance of understanding physical laws while acknowledging uncertainties. The Institute of Physics' report notes that while there is general consensus on climate causes, there is not unanimity among experts.
Researchers have identified human-induced changes in atmospheric moisture content using rigorous statistical methods. The study found that the atmosphere's water vapor content has increased by about 0.41 kg/m³ per decade since 1988, primarily due to human-caused greenhouse gas emissions.
The Extreme Ultraviolet Variability Experiment (EVE) will measure the sun's ultraviolet radiation changes, causing outages in radio communications and affecting satellites. EVE will provide space weather forecasters with warnings of potential communications and navigation outages every ten seconds.
A UC-Riverside hydrologist will study the ecological impact of climate change on mountain lakes, focusing on atmospheric deposition of nutrients. The research aims to understand how nutrient enrichment affects lake productivity and ecology, with potential implications for regulatory agencies setting air quality standards.
Researchers explore 'tipping points' in agriculture, highlighting the need to understand regime shifts to sustain ecosystem functions. The symposium identifies potential tipping points related to water and agriculture that could have major global consequences.
Astronomers have detected water vapor in the atmosphere of HD 189733b, a gas giant 63 light-years away. The presence of water vapour suggests that the planet may have had liquid water on its surface at some point, increasing hopes for detecting life on other rocky planets.