Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA's Various Views of Tropical Storm Dorian

29.07.2013
NASA satellites analyzed Tropical Storm Dorian in infrared light, giving scientists an idea of the storm's structure, cloud heights and cloud temperatures.

A Suomi-NPP Satellite View


This night-time, infrared image of Tropical Storm Dorian was taken from the VIIRS instrument aboard the Suomi-NPP satellite on July 25 at 03:52 UTC. The red and purple areas are very high thunderstorms.
Image Credit: UWI-Madison/NASA-NOAA

NASA-NOAA's Suomi-NPP satellite flew over Tropical Storm Dorian on July 25 at 03:52 UTC (July 24 at 11:52 p.m. EDT). At that time the Visible Infrared Imager Radiometer Suite or VIIRS instrument that flies aboard the satellite captured a night-time, infrared image of Tropical Storm Dorian. VIIRS data showed that the thunderstorms that surround the center of circulation were as cold as 195 to 200 kelvin. Those frigid temperatures indicate very high thunderstorms shooting to the top of the troposphere (lowest layer of atmosphere).

VIIRS, a scanning radiometer, collects visible and infrared imagery and radiometric measurements. VIIRS data is used to measure cloud and aerosol properties, ocean color, sea and land surface temperature, ice motion and temperature, fires, and Earth's albedo.

An Aqua Satellite View

The Atmospheric Infrared Sounder or AIRS instrument also captures infrared data and captured data on Dorian hours after VIIRS. AIRS flies aboard NASA's Aqua satellite and flew over Dorian on July 25 at 15:59 UTC (11:59 a.m. EDT). AIRS data showed that Dorian maintained strong thunderstorms around its center. AIRS also showed an extended band of fragmented thunderstorms wrapping into Dorian's center from the south and southwest.

AIRS data also showed that Dorian had moved back into warmer sea surface temperatures between 300 (80F/26.8C) and 310 Kelvin (98.3F/36.8C).

TRMM Satellite View

When NASA and the Japan Space Agency's Tropical Rainfall Measuring Mission or TRMM satellite passed over Dorian on July 26 at 01:39 UTC (9:39 p.m. EDT on July 25), the instruments aboard measured the rainfall rates occurring within the storm. Mostly light to moderate rainfall was found near Dorian's center of circulation by TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments. TRMM imagery is created at NASA's Goddard Space Flight Center in Greenbelt, Md. where TRMM precipitation data is placed atop a visible/infrared image from TRMM's Visible and InfraRed Scanner to form a complete picture.

Where is Dorian?[

At 5 a.m. EDT (0900 UTC) on Friday, July 26, Dorian's maximum sustained winds had slowed to 50 mph (85 kph). The National Hurricane Center or NHC noted that Dorian has become less organized. Dorian was centered near 17.1 north latitude and 41.5 west longitude, about 1,425 miles (2,290 km) east of the Northern Leeward Islands. Dorian is moving to the west-northwest at 20 mph (32 kph). There were no warnings or watches in effect as of 5 a.m. EDT.

NHC noted that Dorian's disorganization is possibly due to a combination of southwesterly vertical wind shear and mid to upper-level dry air seen in water vapor imagery.

As the AIRS data showed on July 25, the convective area (showers and thunderstorms) has become elongated from north to south.

Dorian is expected to continue moving west-northwest and in 4 or 5 days (by Monday, July 29); NOAA forecasts take the storm over Hispaniola.

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

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/content/goddard/tropical-depression-4-atlantic-ocean/

More articles from Earth Sciences:

nachricht Six-decade-old space mystery solved with shoebox-sized satellite called a CubeSat
15.12.2017 | National Science Foundation

nachricht NSF-funded researchers find that ice sheet is dynamic and has repeatedly grown and shrunk
15.12.2017 | National Science Foundation

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Engineers program tiny robots to move, think like insects

15.12.2017 | Power and Electrical Engineering

One in 5 materials chemistry papers may be wrong, study suggests

15.12.2017 | Materials Sciences

New antbird species discovered in Peru by LSU ornithologists

15.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>