NASA's Aqua satellite passed over Tropical Cyclone 15S in the Southern Indian Ocean and obtained temperature data on the cloud tops, enabling scientists to see where the strongest part of the storm was located.
The Atmospheric Infrared Sounder or AIRS instrument aboard NASA's Aqua satellite looked at Tropical Cyclone 15S in infrared light. Infrared light provides scientists with temperature data and that's important when trying to understand how strong storms can be. The higher the cloud tops, the colder and the stronger the storms that make up a tropical cyclone.
NASA's Aqua satellite flew over Tropical Cyclone 15S on April 6 at 0605 UTC (2:05 a.m. EST). AIRS detected strongest storms around the center of circulation with cloud top temperatures as cold as minus 63 degrees Fahrenheit (minus 53 degrees Celsius). Storms with cloud top temperatures that cold have the capability to produce heavy rainfall.
The Joint Typhoon Warning Center or JTWC stated on April 6 at 0900 UTC (5 a.m. EST) newly formed Tropical Cyclone 15S had maximum sustained winds near 35 knots (40 mph/62 kph). 15S was centered near 13.5 degrees south latitude and 110.7 degrees east longitude, about 572 nautical miles (658 miles/1,059 km) north-northwest of Learmonth, Australia. 15S was moving to the south-southwest at 4 knots (4.6 mph/7.4 kph) away from Australia.
The JTWC noted "Upper level atmospheric analysis Indicates the system is in an area of strong westerly vertical wind shear. Additionally, a mid-latitude trough or elongated area of low pressure is causing subsidence along the southwestern quadrant (of the storm)."
Subsidence means sinking air, and that prevents cloud formation as air has to rise in order to condense to form clouds and the thunderstorms that make up a tropical cyclone.
Tropical Cyclone 15S is moving along the northwestern edge of an elongated area of subtropical high pressure, which is located southeast of the storm. That means that 15S expected to continue tracking south-southwestward around that high pressure area, turning more to the west as the high pressure builds.
JWTC forecasts this system will be short-lived because vertical wind shear will increase in the direction the storm is heading. It is expected to dissipate in three days by April 9.
Rob Gutro | EurekAlert!
Volcanoes and glaciers combine as powerful methane producers
20.11.2018 | Lancaster University
Massive impact crater from a kilometer-wide iron meteorite discovered in Greenland
15.11.2018 | Faculty of Science - University of Copenhagen
Innsbruck quantum physicists have constructed a diode for magnetic fields and then tested it in the laboratory. The device, developed by the research groups led by the theorist Oriol Romero-Isart and the experimental physicist Gerhard Kirchmair, could open up a number of new applications.
Electric diodes are essential electronic components that conduct electricity in one direction but prevent conduction in the opposite one. They are found at the...
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
21.11.2018 | Life Sciences
21.11.2018 | Power and Electrical Engineering
21.11.2018 | Life Sciences