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 Massive impact crater from a kilometer-wide iron meteorite discovered in Greenland
15.11.2018 | Faculty of Science - University of Copenhagen

nachricht The unintended consequences of dams and reservoirs
14.11.2018 | Uppsala University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

How Humans and Machines Navigate Complex Situations

19.11.2018 | Science Education

Finding plastic litter from afar

19.11.2018 | Ecology, The Environment and Conservation

Channels for the Supply of Energy

19.11.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>