Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA eyes a 'decoupled' Tropical Depression Raymond

31.10.2013
Satellite data shows that the lower level circulation of Raymond decoupled from the middle layer of the storm.

When a Tropical Depression decouples, it means the layers of circulation in the atmosphere are no longer "stacked" on top of each other. NASA's Aqua satellite captured infrared data on Raymond that showed the strongest storms, associated with a mid-level circulation center, had broken away from the center.


On Oct. 29 at 4:59 p.m. EDT, NASA's Aqua satellite passed over Raymond, still a tropical storm and captured this infrared image of cloud top temperatures, showing the coldest (purple), strongest storms away from its center.

Credit: Image Credit: NASA JPL, Ed Olsen

Think of a tropical cyclone as having several layers of circulation, a lower level, mid-level and upper level. When one of those levels is pushed away from the others, much like pushing the middle of a haystack, the storm weakens. That's what has happened to Raymond.

On Oct. 29 at 4:59 p.m. EDT, NASA's Aqua satellite passed over Raymond, still a tropical storm and the Atmospheric Infrared Sounder or AIRS instrument captured an infrared image. The AIRS images revealed that the coldest cloud top temperatures, and highest, strongest storms were pushed away from the center of circulation. AIRS data also showed some high clouds associated with Raymond were streaming to the east-northeast and over the southern tip of Baja California, Mexico. The image of the AIRS infrared data was created at NASA's Jet Propulsion Laboratory in Pasadena, Calif.

Tropical Storm Raymond weakened to a depression early on Oct. 30 and is expected to dissipate later in the day.

The National Hurricane Center noted that Raymond decoupled over the night of Oct. 29. Satellite data shows that the low-level center was a couple of hundred nautical miles to the southwest the mid-level circulation that includes an area of strong convection (rising air that forms thunderstorms that make up a tropical cyclone). Microwave satellite data also showed that Raymond has elongated, which is another sign of weakening.

To make matters worse for Raymond, its moving into cooler sea surface temperatures and running into dry air - two more factors that will sap its strength.

On Oct. 30 at 5 a.m. EDT/0900 UTC, Tropical Depression Raymond's maximum sustained winds were near 35 mph/55 kph and it was weakening. The center of the depression was located near latitude 19.6 north and longitude 115.7 west, about 440 miles/705 km west-southwest of the southern tip of Baja California. Raymond was moving toward the northeast near 6 mph/9 kph and is expected to turn north while degenerating to a remnant low pressure area.

Text credit: Rob Gutro
NASA's Goddard Space Flight Center

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

More articles from Earth Sciences:

nachricht Climate Change in West Africa
17.06.2019 | Julius-Maximilians-Universität Würzburg

nachricht Determining the Earth’s gravity field more accurately than ever before
13.06.2019 | Technische Universität Graz

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: The hidden structure of the periodic system

The well-known representation of chemical elements is just one example of how objects can be arranged and classified

The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...

Im Focus: MPSD team discovers light-induced ferroelectricity in strontium titanate

Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.

Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...

Im Focus: Determining the Earth’s gravity field more accurately than ever before

Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.

The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...

Im Focus: Tube anemone has the largest animal mitochondrial genome ever sequenced

Discovery by Brazilian and US researchers could change the classification of two species, which appear more akin to jellyfish than was thought.

The tube anemone Isarachnanthus nocturnus is only 15 cm long but has the largest mitochondrial genome of any animal sequenced to date, with 80,923 base pairs....

Im Focus: Tiny light box opens new doors into the nanoworld

Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the nanolevel. Using a tiny box, built from stacked atomically thin material, they have succeeded in creating a type of feedback loop in which light and matter become one. The discovery, which was recently published in Nature Nanotechnology, opens up new possibilities in the world of nanophotonics.

Photonics is concerned with various means of using light. Fibre-optic communication is an example of photonics, as is the technology behind photodetectors and...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

 
Latest News

Uncovering hidden protein structures

18.06.2019 | Life Sciences

Monitoring biodiversity with sound: how machines can enrich our knowledge

18.06.2019 | Life Sciences

Schizophrenia: Adolescence is the game-changer

18.06.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>