Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Satellite data shows Tropical Cyclone Halola getting stronger


Tropical Depression Halola is getting stronger. NASA data pinpointed the area of strongest sustained winds on July 19 and the extent of those winds expanded on July 20 as Halola became a tropical storm again. NASA also gathered infrared data that showed cloud top temperatures getting colder, indicating more uplift or strength in the storm.

On July 19 at 2 p.m. GMT (10 a.m. EDT), the RapidScat instrument aboard the International Space Station gathered data on surface winds in Tropical Depression Halola. RapidScat saw the strongest sustained winds were on the northeastern side as strong as 22 meters per second (49.2 mph/79.2 kph). Winds around the rest of the storm were less strong.

On July 19, RapidScat saw Halola's strongest sustained winds northeast of the center at 22 meters per second (49.2 mph/79.2 kph). Winds around the rest of the storm were less strong.

Credits: NASA JPL, Doug Tyler

The area of strongest winds appeared to expand on July 20 at 1152 UTC (7:52 a.m. EDT) when the ASCAT-A (Advanced Scatterometer) instrument that flies aboard Europe's EUMETSAT METOP satellite gathered wind data. ASCAT-A showed that Halola's winds were still not symmetrical, but the strongest winds were now along the northern and southeastern edges of the storm.

ASCAT uses radar to measure the electromagnetic backscatter from the wind-roughened ocean surface, from which data on wind speed and direction can be derived. These products are processed by NOAA/NESDIS utilizing measurements from ASCAT.

The Atmospheric Infrared Sounder (AIRS) instrument that flies aboard NASA's Aqua satellite captured infrared data on Halola. AIRS data showed cloud top temperatures were again as cold as -63F/-53C north and east of Tropical Storm Halola's center on July 20 at 3:05 UTC, indicating that there was stronger uplift of air in the storm which can push thunderstorm cloud tops higher in the atmosphere.

NASA research has determined that cloud tops with temperatures near -63 Fahrenheit or -53 Celsius have the ability to generate heavy rainfall (that's over 1 inch or 25 millimeters per hour). When cloud top temperatures are colder than that, the thunderstorms are likely to reach higher in the atmosphere and are likely to be stronger.

Tropical Depression Halola has once again become a tropical storm. At 1500 UTC (11 a.m. EDT), Halola's maximum sustained winds had increased to 50 knots (57.5 mph/92.6 kph). It was centered near 22.0 North latitude and 145.8 East longitude, about 334 nautical miles (384.4 miles/ 618.6 kph) east-southeast of Iwo To island, Japan. Halola has tracked west-northwestward at 12 knots (13.8 mph/22.2 kph).

The Joint Typhoon Warning Center noted that "animated enhanced infrared satellite imagery depicts tight curved banding [of thunderstorms] wrapping around the northern [quadrant] of the cyclone into a well-consolidated low level circulation center." Microwave data from the METOP-B satellite image showed that an eye was developing.

The Joint Typhoon Warning Center (JTWC) noted that vertical wind shear is easing, and Halola is forecast to move through warm sea surface temperatures allowing for it to strengthen. JTWC calls for Halola to reach typhoon status on Tuesday, July 21 and continue strengthening to 80 knots (92.0 mph/148.2 kph) before weakening on July 24.


For more information about how NASA uses infrared light in tropical cyclone research, visit:

Rob Gutro | EurekAlert!

More articles from Earth Sciences:

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

nachricht UM researchers study vast carbon residue of ocean life
19.10.2016 | University of Miami Rosenstiel School of Marine & Atmospheric Science

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

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...

Im Focus: Ultra-thin ferroelectric material for next-generation electronics

'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.

Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...

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

Resolving the mystery of preeclampsia

21.10.2016 | Health and Medicine

Stanford researchers create new special-purpose computer that may someday save us billions

21.10.2016 | Information Technology

From ancient fossils to future cars

21.10.2016 | Materials Sciences

More VideoLinks >>>