Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA Satellites See Cyclone Narelle Torn Apart

16.01.2013
NASA's TRMM and Aqua satellites showed how Tropical Cyclone Narelle has fallen far from being a powerful cyclone in the Southern Indian Ocean.

A time series of infrared images from an Aqua satellite instrument provides a clear picture of Narelle's former power and its recent demise, while TRMM 3-D data showed falling cloud heights and weaker rainfall.


This series of infrared images of Cyclone Narelle was taken over 6 days by the AIRS instrument that flies aboard NASA's Aqua satellite. It shows the growth into a cyclone and weakening back to a tropical storm. The purple areas are the coldest cloud top temperatures, and strongest storms with heaviest rainfall occurring in the cyclone. Top row L to R: Jan. 10 at 0623 UTC; Jan. 11 at 1759 UTC; Jan. 12 at 0605 UTC. Bottom row, L to R: Jan. 13 at 0647 UTC; Jan. 14 at 0553 UTC; and Jan. 15 at 0635 UTC. Credit: NASA JPL, Ed Olsen

Narelle, once a powerful tropical cyclone with winds of 115 knots (~132 mph), was equivalent to a category 4 hurricane on the Saffir-Simpson scale. The storm has continued to steadily weaken as it made its way southward paralleling the coast of Western Australia.

The Tropical Rainfall Measuring Mission or TRMM satellite is a joint mission between NASA and the Japanese Space Agency. TRMM captured an image of Narelle at 04:04 UTC (12:04 pm Australian Western Standard Time) on January 14, 2013. At the time, the center of circulation was located about 350 km (~215 miles) due west of the coast of Australia, and the storm's intensity was down to a category 2 cyclone--equivalent to a category 1 hurricane. TRMM revealed that the intense rainbands previously surrounding the storm had greatly diminished in size and intensity and no longer wrapped completely around the storm.

TRMM saw mostly moderate rainfall located southeast of the center, and revealed that an eye was no longer visible. TRMM Precipitation Radar instrument data was used to create a 3-D image of the storm that showed most of the highest cloud tops had diminished, although some moderately high tops (around 10 km) remain in an area of moderate rain, located southeast of the center.

Infrared date from NASA's Aqua satellite provided a look at the life of Narelle, from its peak to its end. A time series of infrared images of Cyclone Narelle was taken over 6 days by the Atmospheric Infrared Sounder (AIRS) instrument that flies aboard NASA's Aqua satellite. AIRS data showed Cyclone Narelle's growth into a cyclone, where the storm developed a clear eye on infrared imagery. At the time of peak intensity, AIRS infrared data indicated that that thunderstorms around the eye were so strong and so high in the atmosphere, that infrared data indicated they had temperatures of -63F (-52C). By Jan. 15, AIRS data showed that Narelle had been blown apart by wind shear. AIRS data was captured on Jan. 10 at 0623 UTC; Jan. 11 at 1759 UTC; Jan. 12 at 0605 UTC; Jan. 13 at 0647 UTC; Jan. 14 at 0553 UTC; and Jan. 15 at 0635 UTC.

The Joint Typhoon Warning Center issued their final warning on Narelle on Jan. 14 at 2100 UTC (8 p.m. EST/U.S.). At that time Narelle's maximum sustained winds were near 35 knots (40 mph/64.8 kph), and it had become extra-tropical. The center was located near 29.9 south latitude and 110.2 east longitude. It was moving to the south at 18 knots (20.7 mph/33.3 kph).

On Jan. 15, wind shear had taken its toll on Narelle, and had blown the storm apart. AIRS infrared imagery from NASA's Aqua satellite on Jan. 15 showed that Narelle's remnants appeared more like a paint brush stroke from north to southeast, with no discernable center. Narelle's remnants were south of Perth, near Cape Leeuwin where they are expected to dissipate.

As Narelle continues to dissipate, the Australian Bureau of Meteorology maintained a strong wind warning for the following areas: Perth Local Waters, Lancelin Coast, Perth Coast and Bunbury Geographe Coast.

Narelle was the second cyclone to the form in the southern Indian Ocean this year. Cyclone Dumile passed east of Madagascar the first week of the year--and the fourth of the season. Typically there are about 9 tropical storms per season in the southern Indian Ocean, which runs year round from July through June.

Text credit: Rob Gutro/Steve Lang
NASA's Goddard Space Flight Center, Greenbelt, Md./SSAI

Rob Gutro/Steve Lang | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/mission_pages/hurricanes/archives/2013/h2013_Narelle.html

More articles from Earth Sciences:

nachricht NASA eyes Pineapple Express soaking California
24.02.2017 | NASA/Goddard Space Flight Center

nachricht 'Quartz' crystals at the Earth's core power its magnetic field
23.02.2017 | Tokyo Institute of Technology

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>