Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


NASA's Aqua Satellite catches brief life of season's first NW Pacific tropical depression

Tropical Depression One W formed on April 2 and was dissipating by April 4 a couple of hundred miles east southeast of Vietnam and NASA's Aqua satellite captured its brief life.

The Northwestern Pacific Ocean basin can experience tropical cyclones almost all year 'round, except that activity is usually minimal in February and March. So, the first tropical cyclone of the new "season" didn't take long to form after the end of March. The Northwestern Pacific includes all of the area north of the equator and west of the International Date Line, including the South China Sea.

NASA AIRS infrared imagery of TD1W on April 2 shows a more consolidated, rounded and organized tropical depression, whereas the April 4 image shows that wind shear has been tearing the circulation apart and scattering its clouds.
Credit: NASA JPL, Ed Olsen

The Atmospheric Infrared Sounder (AIRS) instrument that flies aboard NASA's Aqua satellite passed over Tropical Depression 1W (TD1W) on April 2 when it was born, and then again on April 3rd, when it faded. That was a short life for the first tropical depression of the Pacific Northwest's hurricane season, but only the beginning.

AIRS data on April second at 05:41 UTC showed a cluster of strong thunderstorms surrounding the weak center of circulation of TD1W. Some of those thunderstorms were dropping heavy rainfall (about 2 inches / 50 mm per hour) and had very high cloud tops, so high they were as cold as -63 Fahrenheit/-52 Celsius.

On April 2, TD1W was located about 280 miles (450 km) east-southeast of Ho Chi Minh, Vietnam near 9.3 North latitude and 111.2 East longitude. It was moving very slowly at 1 knot (1 mph/2 kmh) to the west and maximum sustained winds were near 25 knots (29 mph/46 kmh).

By April 3 at 0900 UTC it had continued moving slowly, only at a rate of 2 knots (2 mph/4 kmh) westward and was then 315 miles (506 km) east-southeast of Ho Chi Minh, Vietnam near 9.1 North and 111.7 East. It still had maximum sustained winds near 25 knots (29 mph/46 kmh), but wind shear was battering the system.

On April 4 NASA's Aqua satellite passed overhead once again and noticed that TD1W had become much more disorganized and spread out (due to wind shear). By the fourth, TD1W had also moved more than 45 miles farther away from Vietnam and into the South China Sea. Strong convection appeared scattered and disorganized on AIRS' infrared imagery and not around the center of circulation.

Tropical Depression 1W is dissipating in the South China Sea today.

Rob Gutro | EurekAlert!
Further information:

More articles from Earth Sciences:

nachricht Oasis of life in the ice-covered central Arctic
24.10.2016 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

nachricht Receding glaciers in Bolivia leave communities at risk
20.10.2016 | European Geosciences Union

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Oasis of life in the ice-covered central Arctic

24.10.2016 | Earth Sciences

‘Farming’ bacteria to boost growth in the oceans

24.10.2016 | Life Sciences

Light-driven atomic rotations excite magnetic waves

24.10.2016 | Physics and Astronomy

More VideoLinks >>>