Articles tagged with Tropical Cyclones
Researchers find that tropical Atlantic sea surface temperature is driving increase in hurricane numbers, with human-caused cooling from pollutants tempering the effect. The study suggests global warming as a primary cause of increased hurricane activity.
Researchers found that only half of the increase in strong hurricanes over the past 25 years can be attributed to rising water temperatures, suggesting other factors are at play. A temperature threshold must be crossed before a weak tropical cyclone can become a monster hurricane.
Researchers used NASA's TRMM satellite data to analyze temperature changes inside hurricanes, providing clues about storm transformations. The study sheds light on the stages of extra-tropical storms and helps forecasters better understand hurricane development.
A study found that hurricanes have become more intense and frequent worldwide, especially in the North Atlantic, with Category 4 and 5 storms increasing by 56% since 1975-89. Sea surface temperatures have risen across the globe, contributing to the observed changes.
The University of Wisconsin-Madison's Tropical Cyclones group is using its specialized tools to help forecasters track Hurricane Ophelia. The tools provide critical information on the storm's trajectory and intensity, enabling more accurate forecasts and helping to save lives.
Researchers will monitor oceanic thunderstorms to study why some systems develop into tropical cyclones and some do not. The data could support development of a more accurate and timely warning system to help safeguard property and lives.
A new study refines hurricane intensity prediction models by incorporating the impact of large eddies on wind speed and air humidity. The research suggests that large eddies contribute significantly to energy, heat, and moisture transfer between the ocean and atmosphere.
The TRMM satellite has provided new insights into rainfall patterns in tropical cyclones, revealing that heaviest rains fall within 50km of a storm's center. This study improves forecast accuracy and can help with the development of better weather forecasts.
A study by NASA researchers found that tropical cyclones with 'hot towers' in their eyewall are twice as likely to intensify within six hours. The researchers used TRMM satellite data to compile global statistics on hot tower occurrence and define a nine-mile high threshold for classification.
Since 1992's Category 5 Hurricane Andrew, NASA satellites have provided critical data to improve hurricane forecasts. The Tropical Rainfall Measuring Mission (TRMM), QuikSCAT, and Aqua satellites offer insights into rainfall intensity, wind patterns, and ocean temperatures.
Researchers have developed a new method to detect potential tropical cyclones using satellite data, allowing for earlier warning times of up to 40 hours. This technique uses wind speed data from the SeaWinds scatterometer on NASA's QuikSCAT satellite to identify areas of rotating winds.
Researchers have used Empirical Mode Decomposition to analyze patterns in tropical storm occurrences along the East Coast. The technique reveals four distinct cycles, or modes, that determine the number of hurricanes making landfall each year.
The new satellite-based tools provide unprecedented insights into tropical cyclones, allowing scientists to break them down into their component parts. This 'data fusion' technique enables the development of advanced hurricane forecasting methods, such as Wavetrak, which sheds light on the origin and intensity of these storms.