Articles tagged with Tropical Cyclones
A new study by the University of Arizona found that tropical cyclones often follow extreme heat, which can be a major hazard after a storm. The research team analyzed 53 tropical cyclones and found that cities' heat index values were always warmer than average after the storm.
The campaign boosted confidence in forecasting similar events with simultaneous satellite, aircraft, and balloon-based observational data. The results showed positive impacts on track and intensity forecasts of TC Mulan, as well as improved rainfall forecasts along the South China coast.
The energy of North Atlantic Tropical cyclones comes from ocean heat content, with peak intensities related to extratropical North Atlantic heat. Coastal upwelling affects subsurface ocean temperatures, correlating with TC peak intensity on an interdecadal timescale.
Researchers found pelagic seabirds fly into the eye of a storm to reduce risk of injury or death. The birds' unique flight style allows them to navigate strong winds.
A team of researchers has developed a novel technique using high-energy muon particles to track and visualize tropical cyclones. This technique, called muography, creates X-ray-like images of large objects, including atmospheric weather systems. The resulting images reveal density variations essential to understanding how cyclones work.
Stronger hurricanes are more likely to reach Europe, with those encountering strong jet stream winds often reintensifying and moving further east. This study investigates the link between hurricane strength and European impact.
Researchers found climate models are less accurate in projecting how tropical cyclones will affect individual coral reefs, highlighting the importance of targeted conservation efforts. The study urges caution when using climate models to identify vulnerable reef communities to storm damage.
Researchers discovered a new perspective on the tropical cyclone size-intensity relationship, finding that latitude and environmental vertical wind shear are primary influences. This reexamination sheds light on the physical mechanisms underlying coordinated changes within TCs, enabling better warning systems.
A new study reveals that Nor'easters produce flood levels just as severe as hurricanes, but occur much more frequently in the Mid-Atlantic region. The intense storms can cause significant damage and disruption along the coastline, with some events surpassing those from tropical cyclones.
A recent analysis reveals a unprecedented increase in Atlantic tropical cyclones and a decrease in Western North Pacific storms, with greenhouse gas-induced global warming potentially playing a role. The study suggests that climate models need to be evaluated to predict future changes in tropical cyclone numbers between the two basins.
A new study reveals that future super cyclones will disproportionately affect populations in South Asia, particularly India, with increased exposure to extreme flooding. If greenhouse gas emissions continue at current levels, over 250% of India's population may experience flooding exceeding 1 meter by 2050.
A new study projects that climate change will more than double the frequency of intense tropical cyclones globally by 2050, increasing maximum wind speeds by up to 20%. This will disproportionately affect low-income countries and regions that are not currently prone to these events.
Researchers found that environmental helicity has a profound impact on TC outer-core size, favoring intense convection and large angular momentum. This study suggests dynamic environmental constraints, including helicity, influence TC outer-core size maintenance and change.
A severe rainstorm over Kauai in April 2018 resulted in $180 million in damage and 532 homes destroyed. The study found that supercell thunderstorms triggered the deluge, which set a new US 24-hour rainfall record of nearly 50 inches.
A recent study analyzed data from 1998-2018 and found a significant association between tropical cyclone exposure and death rates from various causes at the county level. The researchers used this information to better understand the impact of these storms on mortality rates in different areas.
A landmark study published in JAMA reveals that hurricanes and tropical cyclones in the US are associated with increased deaths from various causes, including injuries, infectious diseases, and cardiovascular conditions. The study analyzed 33.6 million death records and found a significant increase in mortality rates after tropical cyc...
The study found consistent trade-offs between resistance and resilience across four ecosystems: freshwater, saltwater, wetland, and terrestrial. Managing for increased resistance may result in decreased resilience, highlighting the importance of choosing the right management strategy.
The study reveals that the Tropical easterly jet significantly modulates tropical cyclone genesis over the western North Pacific. The intensified WP_TEJ results in strong northerly winds, inducing large-scale divergence and upward motion that favors deep convection and TC formation.
Researchers identify significant gaps in knowledge about climate impacts on tropical cyclones, including the dynamics of storm formation and track changes. To address these limitations, they recommend extending historical datasets and improving understanding of natural variability to inform adaptive strategies.
A new MIT study uses climate modeling to reconstruct global hurricane activity, finding a significant increase in North Atlantic hurricanes over the last 150 years. In contrast, global hurricane frequency remains unchanged. The study's findings suggest regional climate variations play a key role in shaping hurricane patterns.
Researchers found that tropical cyclone inland impacts have increased by 30km-190km over the past four decades. By the end of the 21st century, Asian inland regions may experience almost doubling in destructive power due to climate change.
A new study predicts that future East Coast hurricanes will cause greater damage than past storms, with more storms forming near the coast and lingering over populated areas. This is due to changes in atmospheric patterns caused by warmer air temperatures, which will slow down wind speeds and allow hurricanes to stay on track for longer.
The Gulf Coast is expected to experience more frequent sequential landfalls, with Louisiana and Florida being the most at risk. This will lead to intensified stresses on infrastructure, ecosystems, and people, as well as reduced recovery time between disasters.
A recent survey reveals a new method using cloud-cleared radiances improves forecasting of high-impact weather events like hurricanes and typhoons. The technique is now being applied to numerical models for enhanced daily forecasts.
A new high-resolution climate system model has improved the accuracy of simulating tropical cyclones, capturing more realistic features and reducing biases. The model's performance was evaluated using the CAS FGOALS-f3-H model, which showed excellent results in depicting global TC activities.
Researchers found that limiting global warming to 2 degrees Celsius can postpone severe tropical cyclone impacts to the late second half of the century when there are fewer people at risk. Delaying warming can reduce exposed populations in countries like Japan, China, and the Korean peninsula.
International research reveals that children will face a disproportionate increase in lifetime extreme event exposure due to climate change. The study, led by Prof. Wim Thiery of VUB, quantifies the impact of climate change on children born between 1960 and 2020, showing they will experience more heatwaves, droughts, crop failures, riv...
Scientists compiled a 71-year potential risk index dataset to estimate TC impact severity on the Chinese mainland, showing increased damage over time. Recent upward trends in precipitation and wind values contribute to larger TC impacts along coastal China.
A new study simulates global warming at unprecedented resolution, revealing that increasing CO2 concentrations will weaken the intensity of the ENSO temperature cycle. This could lead to fewer El Niño and La Niña events, with potential implications for rainfall extremes.
Naoko Sakaeda, a University of Oklahoma weather researcher, has received a $652,000 NSF CAREER award to study tropical meteorology and improve global weather forecasting. Her research aims to better understand the dynamics of tropical clouds and precipitation at various scales.
A study suggests that China will experience an increase in landfalling tropical cyclones by the end of the 21st century, with a projected 16% rise in annual mean frequency and a 10% increase in occurrence frequency. The study used regional climate models to simulate future changes in temperature and precipitation patterns.
A study links climate features to the variability of global tropical storm days from 1965 to 2019. The research reveals that tropical storm days vary in patterns lasting 3-6 years or 10 years, tied to El Niño-Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO).
The launch of a comprehensive tropical cyclone database and recent marine observing experiments may improve prediction accuracy and help mitigate disasters. Researchers aim to better understand tropical cyclones to inform disaster reduction planning, using technologies like artificial intelligence and unmanned vehicles.
Dust aerosol optical depth negatively affects cloud water in the lower troposphere. This change can alter atmospheric enthalpy surrounding a tropical cyclone, influencing its intensity. Dr. Zhang's study suggests that anomalous enthalpy changes are related to dust AOD conditions in eastern Pacific TCs.
A study investigates the role of vertical coupling in TC genesis, revealing a key mechanism behind the formation of TCs. The research suggests that VHTs play a crucial role in connecting the middle- and lower-troposphere trough axes, leading to VC.
A new study found that tropical cyclone exposure is associated with a significant rise in hospitalizations among older adults, with a 14% average increase in respiratory diseases and a 4% rise in infectious diseases. Hospitalizations from chronic obstructive pulmonary disease (COPD) surged 45% following exposure.
Research from Imperial College London found tropical cyclones are getting 30km closer to coastlines per decade, increasing the risk of damage and 'near-misses'. The study suggests changes in atmospheric patterns may be driving this trend, which could have profound implications for coastal communities worldwide.
Global tropical cyclone activity has been drifting closer to land over the past four decades, according to researchers Shuai Wang and Ralf Toumi. The distance between storms and land has decreased by roughly 30 kilometers per decade, increasing the risk of coastal populations.
A new study predicts that global warming will lead to fewer but more intense tropical cyclones, particularly category 3 or higher events, due to increased humidity and energy levels. The research used high-resolution supercomputer simulations to model the interaction between ocean heat content and tropical cyclones.
A team of researchers from Nova Southeastern University has made a breakthrough in hurricane forecasting by identifying the impact of bio-surfactants on sea spray generation. This new phenomenon may contribute to improved intensity forecasts, which is crucial during pandemics like COVID-19.
Researchers reconstructed 3,000 years of storm history in the southern Marshall Islands to find that tropical cyclones were more frequent during the Little Ice Age. Climate change is expected to shift this region's cyclone formation northward, but also decrease its frequency.
Researchers establish objective standards for defining and identifying binary tropical cyclones (BTCs), which can bring extreme precipitation and cause serious disasters. The study analyzed two best-track datasets and provides a main standard for defining BTCs, based on separation distance and coexistence time.
A study by Cornell University researchers found that effective governments are associated with fewer deaths from tropical cyclone disasters. Governments in areas with weaker public services are particularly deadly.
A new open-source dataset has been created to provide county-level exposure numbers for tropical cyclones and human health. This tool will enable scientists to analyze multiple storms in different places and time periods, drilling down to see what happens in different health outcomes for people.
A study found that infrared radiation trapped by deep clouds strengthens the storm's circulation, promoting moisture saturation and rotation. The phenomenon could help improve forecasting of destructive storms.
A team of researchers found that cloud-induced infrared radiative feedback creates a localized greenhouse effect, trapping heat and accelerating the formation of tropical cyclones. This process is believed to be instrumental in the origin of many tropical storm events.
A new study published in Environmental Research Letters reveals that tropical cyclones have been moving faster across ocean basins since 1982, with the North Atlantic experiencing an increase in hurricane frequency. The researchers attribute this trend to a combination of natural and human-induced climate change.
NASA's Aqua satellite revealed strong winds and wind shear affecting Tropical Storm Nangka as it pushed inland, leading to weakening of the storm's circulation. The storm was forecast to move further inland and dissipate over mountainous terrain in northwest Vietnam and northern Laos.
Dry air is eroding Tropical Storm Norbert's strength by suppressing the development of thunderstorms that need warm, moist air to form. The storm has weakened due to entrainment of dry air, disrupting its compact system and limiting its ability to strengthen.
Infrared light analysis from NASA's Aqua satellite shows wind shear pushing Marie's strongest storms east of the center, with cloud top temperatures as cold as minus 50 degrees Fahrenheit. The storm is expected to weaken and degenerate into a remnant low by Tuesday night.
NASA's Aqua satellite captured visible images of Typhoon Kujira transitioning into an extra-tropical storm, highlighting the effects of strong wind shear. The storm's center of circulation was surrounded by wispy clouds, while powerful southwesterly vertical wind shear pushed clouds and showers northeast of the center.
Infrared data from NASA's Terra satellite revealed Typhoon Kujira's strongest storms and coldest cloud top temperatures, indicating potential heavy rainfall. The storm's maximum sustained winds were near 65 knots on Sept. 29.
Tropical Storm Kujira's strongest storms were located near its center and in a band of thunderstorms on the western side, with cloud top temperatures as cold as minus 80 degrees Fahrenheit. NASA analyzed infrared imagery to determine the storm's strength and predict its potential for heavy rain.
NASA's Aqua satellite detected infrared data showing westerly vertical wind shear pushing strongest storms east of Tropical Storm Lowell's center, indicating wind shear. The storm's convection and distance from the center were on the margins of organized deep convection.
Tropical Storm Lowell was impacted by moderate northwesterly wind shear, weakening its circulation and causing it to spin more slowly. The storm maintained strength with deep convection bands located east of the exposed center.
Dolphin, a tropical cyclone, transformed into an extratropical storm after passing east central Japan. The storm's wind speeds decreased to near 30 knots (35 mph) as it became quasi-stationary and fully embedded in the baroclinic zone.
Paulette formed as Tropical Depression Seventeen and became a hurricane, then weakened into a post-tropical cyclone. NASA's Terra satellite found only one small area of convection with cloud top temperatures as cold as minus 50 degrees Fahrenheit.
Slow-moving post-tropical storm Beta continues to drop large amounts of rainfall in Texas as it moves into the Lower Mississippi Valley. The NASA satellite rainfall product estimated Beta's rainfall rates, with flash flood watches currently in effect across southeast Texas and southern Louisiana.
Tropical Storm Lowell's strongest storms were located around its center and southern quadrant, with cloud top temperatures as cold as minus 80 degrees Fahrenheit. Wind shear played a significant role in the storm's formation and strength, with NASA providing data to support forecasters' predictions.
Tropical Storm Paulette reformed in the central North Atlantic Ocean, with estimated rainfall rates of up to 5mm per hour. NASA's IMERG satellite product provided near-real-time rainfall estimates, showing the storm's intensification and potential impact on the region.