Articles tagged with Troposphere
Researchers confirm strong warming in the upper troposphere, known as the tropospheric hotspot, using publicly available temperature and wind data set. The study reveals a 10% increase in winds over the Southern Ocean, suggesting ozone depletion may be responsible.
Typhoon Vongfong has exited the Mariana Islands and is now tracking west-northwest towards an area of low pressure. The typhoon has maximum sustained winds near 90 knots and is generating rough seas in the western North Pacific Ocean.
Tropical Storm Halong is expected to intensify for three days before weakening, with forecasters predicting a path near Okinawa. The storm's strongest thunderstorms and coldest cloud tops are located on the east side of its center, indicating potential heavy rainfall.
NASA's Aqua satellite captures infrared data on Tropical Storm Halong and developing System 96W, showing powerful thunderstorms with potential for heavy rainfall. Halong is expected to strengthen to typhoon status by August 1.
A new study from the University of Miami Rosenstiel School confirms that rising levels of water vapor in the upper troposphere will intensify climate change impacts. Human activities, such as burning fossil fuels, increase greenhouse gases, leading to higher temperatures and more atmospheric moisture.
Tropical Storm Hernan developed over the weekend and reached hurricane strength before being weakened by wind shear. NASA tracked its movement, noting it was forecasted to weaken into a shallow post-tropical cyclone in 48 hours
Tropical Depression 10W was born when NASA's Aqua satellite passed overhead, with powerful thunderstorms developing around its center. The depression is expected to strengthen due to favorable sea surface temperatures and improved upper-level conditions.
Tropical Cyclone Nanauk is experiencing strong thunderstorms with cloud top temperatures near -63F, indicating high rainfall potential. The storm will face weakening factors such as increasing wind shear, dry air, and cooler sea surface temperatures over the next few days.
Tropical Depression 2E has high, very cold cloud top temperatures indicating strong thunderstorms and potential for heavy rainfall. The National Hurricane Center forecasts large rainfall amounts in southern Mexico over the next couple of days.
A research group from Jülich has found that nitrous acid (HONO) is not a net source of hydroxyl radicals, which are central to the air's self-cleaning capacity. The discovery was made using air measurements recorded by a Zeppelin NT during the EU PEGASOS project.
A new study reveals a previously unknown atmospheric phenomenon over the South Seas, which boosts ozone depletion in polar regions and could have a significant influence on future climate. The discovery of the 'OH shield' layer allows long-lived chemical compounds to enter the stratosphere, contributing to global impact.
Tropical Cyclone Hellen made landfall in west central Madagascar, with powerful thunderstorms and cloud top temperatures exceeding -63F/-52C. The storm developed in the Mozambique Channel and rapidly intensified into a Category IV cyclone before making landfall.
Recent volcanic eruptions have cooled the planet, partly offsetting the warming caused by greenhouse gases. The team found evidence of significant correlations between volcanic aerosol observations and lower tropospheric temperatures.
Typhoon Pabuk's eye shrunk to 25 nautical miles in diameter after high clouds covered the center, reducing visibility on NASA satellite imagery. The storm is expected to remain at sea and transition into an extra-tropical storm by Sept. 27.
A recent study by Lawrence Livermore National Laboratory and six other institutions found that human activity has a discernible impact on the thermal structure of the atmosphere. The research compared satellite records with simulations and revealed a unique pattern of global-scale tropospheric warming and stratospheric cooling.
Tropical Storm Fernand formed rapidly over Mexico, with NASA's TRMM satellite detecting towering thunderstorms and heavy rainfall rates exceeding 2 inches per hour. The storm's maximum sustained winds were near 50 mph at landfall, causing significant flooding and threatening life-threatening flash floods.
Tropical Storm Pewa's wind shear has pushed precipitation away from its center, resulting in a weakening storm. Cloud top temperatures have warmed up, indicating the uplift in Pewa was waning by August 23.
Typhoon Soulik exhibits a tight concentration of powerful storms surrounding its center, with cloud top temperatures colder than -63F/-52C, indicating heavy rainfall.
Cyclone Sandra is intensifying in the Southern Pacific Ocean, with NASA's Aqua satellite capturing infrared data showing cloud top temperatures growing colder and thunderstorms strengthening around its center.
Researchers discovered significant numbers of living microorganisms in the middle and upper troposphere, approximately four to six miles above the Earth's surface. The findings suggest that these microorganisms could play a role in forming ice crystals and impact weather patterns.
Scientists detected over 2,100 unique microbial species in two large dust plumes originating in Asia, significantly higher than the 18 found using traditional culturing methods. The discovery challenges existing understanding of the atmosphere as a conveyor belt and highlights its potential as an ecosystem.
Climate scientists analyzed satellite observations and computer model simulations to find a human-caused climate change signal. The study found that tropospheric and stratospheric temperature changes are related to human activities, with the lower stratosphere cooling due to ozone depletion.
Tropical Storm Tony is weakening as its cloud top temperatures rise, signaling a shift towards dissipating over the weekend. The storm's organization and deep convection are being disrupted by strong winds and cooler waters, leading to its expected dissipation on October 27-28.
Tropical Storm Murjan made landfall on October 25 in eastern Somalia, just south of Cape Guardafui. The storm's western half brought thunderstorms with cloud top temperatures as cold as -63F (-52C), potentially leading to heavy rainfall.
Tropical Storm Sandy's intensification confirmed by NASA research, reaching hurricane strength in just six hours. The storm showed good organization and powerful 'hot towers' near its center of circulation.
Typhoon Sanvu transformed into an extra-tropical storm due to cooler sea surface temperatures and wind shear, weakening it significantly. The storm passed Chichi Jima island on May 27, with most rainfall pushed to the northeast of its center.
Researchers found positive trends in ozone levels over the Iberian Peninsula between 1995 and 2008, with quicker recovery rates in industrial areas. The study suggests that ground-level ozone, a secondary pollutant, contributed to the recovery of stratospheric ozone levels.
Researchers from the University of Valladolid have measured CO2 levels in a rural area near Valladolid, finding significant increases between 2002 and 2005. The study reveals an annual increase of 3 ppm, highlighting the impact of emissions and atmospheric conditions on carbon dioxide levels.
The remnants of Typhoon Vamco are sweeping over Alaska's Aleutian Island chain, causing high wind warnings. The National Weather Service has posted warnings for gusts of 40-60 mph, with some areas reaching hurricane-strength winds.
The Springer textbook has been recognized for its comprehensiveness and uniqueness in covering stratosphere-troposphere interactions. It provides information on various physical processes involved in the coupling between the two layers of the atmosphere.
Researchers found a 2-degree widening of the tropics, with subtropical deserts expanding into midlatitude regions. Midlatitude temperatures warmed by 1.5 degrees Fahrenheit over 26 years, suggesting a change in jet stream positions.
Researchers found faster subtropical warming of the troposphere, moving jet streams poleward, which could widen tropical regions and alter rainfall patterns. This shift may reduce winter precipitation in southern Europe and Australia, as well as impact regional climate patterns.
A recent study found that mercury can be carried long distances in the atmosphere and combined with other chemicals, making it more water-soluble and easily removable. High concentrations of reactive gaseous mercury can now be present even far from industrial sources, posing a significant threat to ecosystems.
Recent warming of the tropical troposphere has been confirmed by new observational estimates and state-of-the-art climate models. The warming trend is attributed to an 'amplification' effect caused by moist air rising and condensing into clouds, with temperature changes in the deep tropics larger than at the surface.
Researchers discovered that the onset of spring is more rapid than previously thought and linked to a phenomenon known as the stratospheric final warming. This event accelerates the weakening of tropospheric winds, allowing for more accurate weather prediction models.
Researchers used a simple climate model to demonstrate that changes in the strength of winds in the stratosphere can cause changes in tropospheric weather systems. This understanding is crucial for improving seasonal weather forecasts and predicting the effects of ozone depletion and global warming on our climate.
A team of researchers led by Qiang Fu validated satellite temperature data for global warming using direct measurements from the stratosphere. The results show that the troposphere has warmed at nearly one-third of a degree Fahrenheit per decade, consistent with climate models and surface temperature records.
A new study using satellite data reveals that the troposphere has been warming at a rate similar to the surface, contradicting previous claims of missing atmospheric warming. The researchers developed a method to separate troposphere temperature trends from those of the stratosphere, revealing a faster warming trend.
Researchers at Lawrence Livermore National Laboratory have developed a novel technique to quantify stratospheric ozone in the upper troposphere. This allows for better understanding of how much ozone is transported from the stratosphere to the upper troposphere, affecting climate and atmospheric chemistry.
A recent NASA study verified that water vapor in the atmosphere increases with rising temperatures, contradicting some climate scientists' claims of a decrease. The researchers found the positive water vapor feedback to be weaker than expected, which may impact global climate predictions.
Researchers at Hamilton College have found that atmospheric water clusters could play a key role in accelerating the Greenhouse effect. The team's calculations suggest that larger water clusters should be detectable in the lower troposphere.
A new study suggests that human activities are a leading cause of warming in the troposphere and cooling in the stratosphere. The research team found that ozone depletion combined with greenhouse gas emissions accounted for most of the recent rise in the tropopause height.
The MINOS study found high levels of air pollution over the Mediterranean Sea, originating from both western and eastern Europe, as well as South Asia. The pollution transport follows prevailing winds and affects ecosystems and human health, while aerosols alter solar radiation absorption and climate patterns.
Researchers at the University of Illinois found a statistical correlation between weak polar vortices and severe cold outbreaks. The study proposes a dynamical mechanism where stratospheric forcing stimulates pre-existing modes of variability in the troposphere.