Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA sees cloud top temperatures warming in Cyclone Victor

22.01.2016

Infrared imagery from NASA's Aqua satellite shows that cloud top temperatures are warming in Tropical Cyclone Victor. Forecasters at the Joint Typhoon Warning Center or JTWC noted that Victor is on a weakening trend, however, warnings were in effect in Tonga on Jan. 21.

Warmer cloud top temperatures means that convection (rising air that leads to the development of thunderstorms that make up a tropical cyclone) has started to weaken.


This infrared image from the MODIS instrument aboard NASA's Aqua satellite shows coldest clouds tops (-63F/-53C) and strongest storms southeast of the center of Tropical Cyclone Victor on Jan. 21 at 1210 UTC.

Credits: NASA/NRL

Infrared data from the MODIS (Moderate Resolution Imaging Spectroradiometer) instrument aboard NASA's Aqua satellite showed coldest clouds tops had warmed to near minus 63 degrees Fahrenheit (minus 53 degrees Celsius) southeast of Victor's center on Jan. 21 at 1210 UTC (7:10 a.m. EST).

When cloud tops warm on infrared satellite imagery, it means they are not being pushed as high in the troposphere (lowest level of the atmosphere).

That's an indication that the storm has less uplift and becomes weaker. JTWC forecasters noted "animated enhanced infrared satellite imagery depicts a decoupling low-level circulation center, with warming cloud-tops."

At 0900 UTC (4 a.m. EST), Tropical Cyclone Victor was still a Category One hurricane on the Saffir-Simpson hurricane wind scale. Maximum sustained winds were near 65 knots (75 mph/120 kph).

Tropical cyclone Victor was centered near 21.5 degrees south latitude and 171.0 degrees west longitude, about 432 miles south of Pago Pago, American Samoa. Victor was moving to the west at 7 knots (8 mph/12.9 kph).

Warnings were issued from the Fua'amotu Tropical Cyclone Warning Centre in Tonga on Jan. 21. In Tonga, a tropical cyclone warning remains inforce for Ha'apai, Tongatapu and 'Eua. A gale warning remains inforce for Ha'apai, Tongatapu and 'Eua. A strong wind warning remains inforce for Vavau.

A heavy damaging swells remain in force for all Tonga waters. For the updated forecast for Tonga, visit: http://www.met.gov.to/.

Victor is moving west and is forecast to weaken steadily over the next few days before turning south. Victor is expected to dissipate by January 24.

Rob Gutro | EurekAlert!

More articles from Earth Sciences:

nachricht The pace at which the world’s permafrost soils are warming
16.01.2019 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

nachricht Using satellites to measure rates of ice mass loss in glaciers
16.01.2019 | Friedrich-Alexander-Universität Erlangen-Nürnberg

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Ultra ultrasound to transform new tech

World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles

The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.

Im Focus: Flying Optical Cats for Quantum Communication

Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.

In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...

Im Focus: Nanocellulose for novel implants: Ears from the 3D-printer

Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.

It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:

Im Focus: Elucidating the Atomic Mechanism of Superlubricity

The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.

One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...

Im Focus: Mission completed – EU partners successfully test new technologies for space robots in Morocco

Just in time for Christmas, a Mars-analogue mission in Morocco, coordinated by the Robotics Innovation Center of the German Research Center for Artificial Intelligence (DFKI) as part of the SRC project FACILITATORS, has been successfully completed. SRC, the Strategic Research Cluster on Space Robotics Technologies, is a program of the European Union to support research and development in space technologies. From mid-November to mid-December 2018, a team of more than 30 scientists from 11 countries tested technologies for future exploration of Mars and Moon in the desert of the Maghreb state.

Close to the border with Algeria, the Erfoud region in Morocco – known to tourists for its impressive sand dunes – offered ideal conditions for the four-week...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Our digital society in 2040

16.01.2019 | Event News

11th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Aachen, 3-4 April 2019

14.01.2019 | Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

 
Latest News

A new twist on a mesmerizing story

17.01.2019 | Physics and Astronomy

Brilliant glow of paint-on semiconductors comes from ornate quantum physics

17.01.2019 | Materials Sciences

Drones shown to make traffic crash site assessments safer, faster and more accurate

17.01.2019 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>