Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA infrared satellite imagery shows Cyclone Cherono dwindling

22.03.2011
Three days of NASA infrared satellite imagery provides a clear picture to forecasters of the effect wind shear has had on former Cyclone Cherono. Wind shear increased near Cyclone Cherono this weekend and weakened it down to a remnant low pressure area in the Southern Indian Ocean. Today, March 21, Cherono's remnants are moving away from Mauritius and still causing ocean swells.

NASA's Aqua satellite flew over former Tropical Cyclone Cherono each day over the last three days and the Atmospheric Infrared Sounder (AIRS) instrument captured the effects of the increased wind shear in infrared imagery.


These three days of AIRS infrared imagery show how wind shear took its toll on Cyclone Cherono and weakened it to a remnant low pressure area. On March 19 (left) it was a tropical storm with a band of thunderstorms around west of center. On March 20 the banding was gone and strong convection (purple) was limited to north of the center of circulation. By March 21 Cherono had become asymmetric from wind shear and weakened to a remnant low. Credit: NASA JPL, Ed Olsen

AIRS infrared imagery on March 19 at 09:35 UTC showed a concentrated center of circulation with a band of thunderstorms stretching from southwest to northwest outside the center of Cherono's circulation. At that time Cherono was still a tropical storm. On March 20 at 21:11 UTC, AIRS imagery revealed that those bands of thunderstorms around Cherono had disappeared as a result of the increased wind shear. On Sunday, March 20, the strongest convection (rapidly rising air that forms the thunderstorms that power a tropical cyclone) was located to the north of the center of circulation.

By March 21 at 09:17 UTC, NASA AIRS infrared imagery showed that Cherono had become asymmetric from wind shear. When a tropical cyclone becomes asymmetric it weakens.

The Mauritius Meteorological Service warns that as the remnant low pressure area formerly known as Cyclone Cherono continues to move away today, March 21. As a result, rough surf and heavy ocean swells can be expected today and residents are being warned not to go in the ocean, especially beyond reef areas.

The last warning on Cherono from the Joint Typhoon Warning Center came on Saturday, March 19, when Cherono was still a Tropical Storm with maximum sustained winds near 40 mph (35 knots/ 64 kmh). at that time it was located about 595 miles east of La Reunion Island near 19.7 South and 65.0 East, and was moving west-southwest near 9 mph (8 knots/ 14 kmh).

Over this past weekend, vertical wind shear increased battering the structure of Cyclone Cherono and weakening the circulation. Now the remnant low continues to move away from Mauritius and is expected to dissipate over the next day or two.

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov

More articles from Earth Sciences:

nachricht Climate satellite: Tracking methane with robust laser technology
22.06.2017 | Fraunhofer-Gesellschaft

nachricht How reliable are shells as climate archives?
21.06.2017 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Study shines light on brain cells that coordinate movement

26.06.2017 | Life Sciences

Smooth propagation of spin waves using gold

26.06.2017 | Physics and Astronomy

Switchable DNA mini-machines store information

26.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>