Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA's RapidScat and Aqua satellite see Tropical Depression 9 developing

17.09.2015

The ninth tropical depression of the Atlantic Ocean hurricane season developed in the central Atlantic on September 16, 2015. The day before, NASA's RapidScat instrument analyzed the surface winds of the developing low pressure area and found tropical-storm-force winds in one quadrant of the system. NASA's Aqua satellite looked at the depression and saw that it was already being affected by wind shear.

RapidScat data on September 15 at 10 a.m. EDT showed that the strongest sustained winds in the developing depression were north of the center near 24 meters per second (53.6 mph/ 86.4 kph).


Infrared data from the AIRS instrument aboard NASA's Aqua satellite on Sept. 16 at 04:23 UTC (12:23 a.m. EDT) showed cold cloud tops of powerful thunderstorms wrapping north and east of TD9's center.

Credits: NASA JPL, Ed Olsen

Winds around the rest of the system were around 20 meters per second/72 km/44.7 mph, with the exception of the western quadrant, which were weaker. RapidScat wind data was analyzed by the RapidScat team at NASA's Jet Propulsion Laboratory, Pasadena, California.

Infrared data from the Atmospheric Infrared Sounder or AIRS instrument aboard NASA's Aqua satellite on Sept. 16 at 04:23 UTC (12:23 a.m. EDT) showed cold cloud tops of powerful thunderstorms wrapping north and east of the developing depression's center. Cloud top temperatures were as cold as -63F/-53C, and were capable of generating heavy rain.

At 11 a.m. (1500 UTC) on September 16 the center of Tropical Depression Nine was located near latitude 15.0 North, longitude 43.1 West. That puts the center about 1,270 miles (2,050 km) west of the Cape Verde Islands.

The depression is moving toward the north-northwest near 8 mph (13 kph). Maximum sustained winds are near 30 mph (45 kph) with higher gusts. The National Hurricane Center noted that little change in strength is forecast during the next 48 hours. The estimated minimum central pressure is 1010 millibars.

National Hurricane Center Forecaster Brennan noted that some southwesterly vertical wind shear is already affecting the cyclone, with most of the thunderstorms, clouds and convection (rising air that forms the thunderstorms that make up a tropical cyclone) pushed east and north of the estimated center position.

Brennan noted that the environment will becomes less favorable from this point forward, with the wind shear forecast to quickly increase over the next day and remain high through the remainder of the forecast period. In addition, the southwesterly flow aloft will bring dry mid- to upper-level air over the cyclone.

NHC expects Tropical Depression 9 to move in a north-northwestward to northwestward direction for the next couple of days and then turn west-northwest in four days.

Rob Gutro | EurekAlert!

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 >>>