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 Devils Hole: Ancient Traces of Climate History
24.05.2017 | Universität Innsbruck

nachricht Supercomputing helps researchers understand Earth's interior
23.05.2017 | University of Illinois College of Liberal Arts & Sciences

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>