Articles tagged with Atmospheric Pressure
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Tropical Depression Fung-Wong's clouds had cloud-top temperatures near -63F/-53C over Japan's northern Ryuku Islands. The depression moved to the northeast at 11 knots (12.6 mph/20.3 kph) before becoming an extra-tropical storm.
Rapid Atlantic warming has turbocharged Pacific Equatorial trade winds, causing eastern tropical Pacific cooling and amplifying the Californian drought. The increased winds also accelerated sea level rise in the Western Pacific and slowed global surface temperature rise since 2001.
Researchers at Carnegie Institution found that molybdenum disulfide undergoes structural changes when subjected to high pressure, resulting in a metallic state. The compound's transformation occurs above 197,000 times normal atmospheric pressure and is reversible upon decreasing pressure.
Tropical Storm Hernan's weakening lifted its cloud tops, with infrared data revealing warming temperatures in the system. The storm dissipated into a remnant low-pressure area, with forecasters predicting its remaining systems to dissipate over the next few days.
The NASA Aqua satellite detected a low-pressure area that became Tropical Depression 2, with cloud top temperatures exceeding -63F/-52C indicative of strong thunderstorms and powerful uplift.
Researchers have experimentally re-created conditions deep inside giant planets like Jupiter and Saturn using the National Ignition Facility. They successfully compressed diamond to unprecedented densities, providing new constraints for dense matter theories and planet evolution models.
Researchers have identified a new phase of oxygen with unprecedented characteristics, including the formation of quartet molecules that exhibit a 'quantum dance' at high pressures. This phenomenon leads to fluctuating magnetic properties in one phase and loss of magnetism in another.
Tropical System 92B has weakened due to persistent easterly vertical wind shear, according to NASA's infrared data. The Joint Typhoon Warning Center downgraded the potential for significant tropical cyclone development within the next 24 hours to medium.
Scientists have discovered a significant difference in lower mantle chemistry, shifting from a single ferromagnesian silicate mineral to two distinct phases, including an iron-rich and hexagonal structure called H-phase. This finding challenges geodynamic models and may lead to new discoveries about the deep Earth.
A tropical low pressure area is developing in the Eastern Pacific Ocean, with a 50% chance of becoming a tropical depression within two days. The system is expected to move northeastward towards the southwestern coast of Mexico, bringing heavy rainfall and potentially strong thunderstorms.
A QUT physicist demonstrated that a siphon operates through gravity, not atmospheric pressure. The experiment involved a hypobaric chamber and showed that water flow remained constant despite changes in atmospheric pressure.
Researchers use atmospheric pressure plasma jets to induce biological tissue damage and study DNA damage. The findings suggest that adding gases like oxygen can increase radical species and potentially destroy cancerous tumour cells.
The KAIST team created a box-type pressure vessel with a lattice structure, which can efficiently store liquefied natural gas (LNG) without the need for multiple cylindrical tanks. This design reduces space utilization issues and lowers manufacturing costs by using special steel alloys.
Research reveals that oxidation reaction between atmospheric iron oxide reduces soil plasticity, sensitivity, and structural yield stress. The transformation is caused by micro-structure remodeling, not inherent mineral changes, and has potential adverse effects on soil stability.
Astronomers have developed a new method to gauge exoplanet pressure by detecting dimer molecules. This technique may also help identify biosignatures of life in extraterrestrial atmospheres. The discovery could be made possible with future powerful telescopes like the James Webb Space Telescope.
Tropical Cyclone Fobane is weakening due to increasing vertical wind shear and cooler sea surface temperatures. The storm is moving southward through the Southern Indian Ocean, with maximum sustained winds near 45 knots/51.7 mph/83.3 kph.
Two low-pressure areas, System 94P (Fletcher) and 95S, were detected by NASA's Aqua satellite over Australia. Fletcher remains in the Gulf of Carpentaria with disorganized convection, while System 95S develops near Darwin with heavy rainfall potential.
Researchers discover a defect in synthetic diamond that allows them to measure and potentially manipulate electrons, enabling new 'quantum technology' for faster information processing. The discovery could exponentially increase the computing capacity of tiny machines.
Researchers discovered a temperature turnaround point in the atmospheres of Jupiter, Saturn, Uranus, Neptune, and Titan, which may be common to billions of planets. This phenomenon occurs at a pressure of about 0.1 bar and is likely caused by infrared radiation absorption.
System 90L has developed in the eastern Atlantic Ocean and NASA's Aqua satellite captured infrared data on the clouds, revealing strongest thunderstorms northeast of the center. The non-tropical low is generating tropical-storm-force winds but is expected to be affected by strong upper-level winds shear, likely preventing organization.
NASA's Aqua satellite detected a low-pressure system with strong convection and high thunderstorm cloud tops in the northern Indian Ocean. The system is expected to develop into Tropical Depression 06B and move north-northeastward towards the Bay of Bengal, with wind speeds estimated at 25-30 knots.
Researchers synthesized a new material that can store up to three times more hydrogen than most metal hydrides, with an unusual structure not observed in other known hydrides. The discovery could contribute to the development of high-capacity hydrogen fuel cells and potentially lead to the discovery of unprecedented properties.
Researchers created a timeline of planet and atmosphere formation by studying liquid basalt under extreme pressures and temperatures. They discovered molten magma once formed an ocean within the Earth's mantle.
Researchers found a strong correlation between the number of Hurricane Sandy-related photos on Flickr and atmospheric pressure in New Jersey. The study suggests that online indicators like Flickr photos could help measure disaster impact.
Researchers found that three insect species altered their mating behaviors in response to falling air pressure, which may reduce injury and death. The study suggests insects are adapted to respond to potential bad weather, impacting not only individual animals but also ecological communities.
Researchers found insects adjust courtship and calling behaviors in response to changing air pressure, reducing risk of injury during high winds and rain. The study suggests these modifications may help insects predict adverse weather conditions, allowing them to modify their mating behavior accordingly.
Scientists have conducted high-pressure experiments to study methane's phases and reactivity under conditions found deep within planets. The findings suggest that methane is not a solid under any conditions met deep within most planets, contradicting previous assumptions.
Comet impacts are thought to have delivered massive amounts of organics to early Earth, which could have led to the formation of life. The study found that moderate shock pressures and temperatures produced nitrogen-containing heterocycles, while higher conditions resulted in methane and formaldehyde.
Researchers have found rounded pebbles on Mars that indicate flowing water, with sizes between 4-40mm. The findings suggest a prolonged warm period with flowing streams and a denser atmosphere, potentially making Mars habitable for microbial life.
Tropical Storm Alvin quickly weakened into a remnant low pressure area, embedded within the Inter-tropical Convergence Zone, after being named on May 15. The National Hurricane Center issued its final advisory on May 17, predicting winds would gradually diminish and not regenerate.
Scientists have measured the strength of iron under extreme pressures, simulating conditions at the center of the Earth. The study found that iron in the inner core is weaker than previously thought, with implications for understanding Earth's evolution and geomagnetic field.
The researchers used a new technique that can probe a sample with an intense X-ray beam and deduce its state within seconds. They determined the melting point of iron up to 4800 degrees Celsius and 2.2 million atmospheres pressure, leading to the estimated temperature at the center of the Earth's core.
Researchers used supercomputer simulations and atmospheric conditions to determine that Byrd indeed neared the Pole, but likely flew within 80 miles of it before turning back. The analysis questioned whether Byrd could have completed a 1,500-mile round trip in just 15 hours and 44 minutes.
Researchers are using smartphone pressure sensors to develop better weather forecasting techniques, which could significantly improve short-term forecasts. The PressureNet app collects data from Android devices, including Samsung Galaxy S3 and Nexus 4 smartphones, and Motorola Xoom tablets.
Scientists have developed a way to generate super-high pressures without using shock waves, allowing them to study materials at conditions corresponding to the core of gas giant planets. This breakthrough could lead to new revelations about how the Earth evolved and how iron functions at extremes.
Tropical Storm Kristy is weakening due to adverse atmospheric conditions and cooler waters, while another system is developing with a 50% chance of formation over the weekend. Environmental conditions are expected to improve for the second low-pressure area, but satellite data shows it has become disorganized.
NASA's Atmospheric Infrared Sounder instrument captured an infrared image of System 90E, revealing strong thunderstorms and heavy rainfall. The low-pressure system strengthened into Tropical Depression 11E, forecasted to move west-northwest towards the coast.
Researchers at Carnegie Institution find nickel oxide becomes metallic at enormous pressures of 2.4 million times atmospheric pressure, a goal in physics that ranks as high as achieving metallic hydrogen.
NASA's GOES Project provides a complete view of the Atlantic and eastern Pacific Ocean basins. As of August 13, the Atlantic tropics are quieter, with fewer low-pressure areas than the previous week. Tropical Storm Hector in the east Pacific is weakening due to wind shear.
A Japanese research team identified a structural change in a protein that confers pressure-resistant properties on deep-sea bacteria. This finding may help guide the design of enzymes for use in high-pressure chemical industrial processes, exploiting the unique adaptation mechanisms of these organisms.
A NASA satellite has been monitoring System 92W, a low-pressure system in the western North Pacific Ocean, indicating increased power and uplift as it strengthens. The storm is expected to move west-northwest past northern Luzon, bringing heavy rainfall and potentially localized flooding.
Tropical cyclone System 96L is intensifying off the Yucatan Peninsula, with a 70% chance of becoming a tropical depression by weekend. NASA predicts heavy rains and localized flooding along US Gulf Coast.
A medium-chance tropical depression is possible in the south-central Gulf of Mexico, with NASA satellites providing key data on the area's low pressure. The system is expected to bring heavy rainfall and flooding to parts of Cuba, western Cuba, and southern Florida over the next couple of days.
Scientists have developed new techniques to contain hydrogen at pressures above 3 million times normal atmospheric pressure, exploring its behavior under extreme conditions. The study confirms the stability of the chemical bond between atoms, disproving previous interpretations of a metallic state.
Researchers used fossilized raindrop impressions to deduce atmospheric pressure at 2.7 billion years ago. The results suggest that abundant greenhouse gases likely caused the warm temperatures, contradicting previous theories about pressure broadening.
Researchers found that current estimates of ice-giant planetary interiors overstate water's compressibility by as much as 30 percent. Accurate estimates are essential to calculate the evolution of the universe and model the composition of planets like Neptune and Uranus.
Researchers at Indiana University detected unusual seismic signals associated with tornadoes that struck the Midwest last week. The experiment suggests a large atmospheric pressure transient related to thunderstorms may precede tornadoes.
System 92S is a low-pressure area that has been watching by NASA satellites for days, with cloud temperatures cooling and storms intensifying as it moves over northern Madagascar. The Joint Typhoon Warning Center predicts a high chance of development into a tropical cyclone in the next 24 hours.
Researchers discovered that heavier isotopes separate from lighter isotopes as magma cools down due to their greater mass and momentum. This separation, called fractionation, can provide insights into the formation of igneous rocks.
Researchers have discovered unexpected superconductivity in a type of compound at higher pressures, contradicting earlier findings. The study reveals a transition temperature that disappears and reappears under extreme pressure conditions, sparking further research into its causes.
Researchers found oxygen molecules remain stable up to 1.9 terapascals, then polymerize, showing unique electrical conductivity patterns. The molecule's behavior is influenced by its double covalent bond and lone pairs, which repel other molecules and hinder polymerization.
The Earth's rotational axis fluctuates due to gravitational forces and atmospheric pressure. By building a ring laser at the Wettzell observatory, scientists have successfully captured these movements, corroborating Chandler and annual wobble measurements.
Researchers have achieved a record pressure of 50 megabars in a diamond experiment at the National Ignition Facility, replicating conditions believed to exist in super-Earths. The use of ramp-compression technique allowed for higher pressures than standard near-instantaneous shock-physics experiments.
Scientists at Stanford University have created a new, super-hard form of carbon called amorphous diamond, which has the same strength in all directions as traditional diamond. This breakthrough material could lead to innovative applications such as cutting tools and wear-resistant parts for transportation.
Scientists have discovered a new form of carbon capable of withstanding extreme pressure stresses, surpassing that of diamond. The amorphous material was created by compressing glassy carbon to above 400,000 times normal atmospheric pressure.
Tropical Storm Ophelia formed in the Atlantic Ocean after strengthening from low-pressure System 98L. The storm has maximum sustained winds near 45mph and is moving west at 14mph.
A NASA satellite observed a record-breaking heat wave in the Great Plains during July, with temperatures soaring up to 20°F above average. The Atmospheric Infrared Sounder instrument detected a persistent high-pressure vortex that pumped hot air from the tropics into the region.
Recent concerns about airplane travel and insulin pump delivery may be overstated due to limited data, according to an editorial. The effects of changes in atmospheric pressure on insulin delivery remain unclear, and more research is needed before drawing conclusions.
Scientists at Carnegie's Geophysical Laboratory have discovered a metallic glass that demonstrates long-range order among its atoms, a key characteristic of the elusive 'perfect glass' state. By applying high pressure, they were able to create a single crystal and preserve its structural order.
A University at Buffalo team proposes using sodium to convert hydrogen into a superconducting metal, which could improve power transmission efficiency. The researchers used an open-source computer program to find suitable sodium polyhydrides that become metallic at lower pressures than previously thought.