Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA Sees Tropical Fireworks in E. Pacific in Newborn Tropical Storm Daniel

06.07.2012
Tropical "fireworks" happened in the eastern Pacific Ocean on July 4 as Tropical Depression 04E formed off western Mexico's coast and strengthened into Tropical Storm Daniel. NASA's Tropical Rainfall Measuring Mission (TRMM) satellite captured an image of TD 4E's rainfall and towering clouds as it passed overhead, and saw "hot towers" that suggested it would become a tropical storm.

The TRMM satellite got a very good look at recently formed Tropical Depression 4E (TD 4E) at 1040 UTC (6:40 a.m. EDT) on July 4, 2012. The hot towering cumulonimbus clouds called "hot towers" shooting up like a roman candle around the center of circulation provide the fireworks for the depression.


When TRMM passed over TD 4E on July 4, 2012, it saw strong convective storms were dropping heavy rainfall (red) near the center of the tropical depression's center of circulation. That rain was falling at a rate of more than 2 inches/50 mm per hour. TRMM's Precipitation Radar (PR) instrument found that a few of these towering storms reached heights of about 15 km (~9.3 miles).
Credit: SSAI/NASA, Hal Pierce

A "hot tower" is a rain cloud that reaches at least to the top of the troposphere, the lowest layer of the atmosphere. It extends approximately nine miles (14.5 km) high in the tropics. These towers are called "hot" because they rise to such altitude due to the large amount of latent heat. Water vapor releases this latent heat as it condenses into liquid.

Research by Owen Kelley and John Stout of George Mason University and NASA's Goddard Space Flight Center, Greenbelt, Md., shows that a tropical cyclone with a hot tower in its eyewall was twice as likely to intensify within the next six hours than a cyclone that lacked a tower and Tropical Depression 4E became Daniel by 11 a.m. EDT on July 5.

When TRMM passed over TD 4E, rainfall data from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments revealed that strong convective storms were dropping heavy rainfall near the center of the tropical depression's center of circulation. TRMM's Precipitation Radar (PR) instrument found that a few of these towering storms reached heights of about 15 km (~9.3 miles). TRMM PR also found that rainfall within TD 4E was returning reflectivity values of over 51.5 dBZ. Those data provided additional proof that heavy rainfall was occurring within TD 4E.

At 5 p.m. EDT on July 4, the depression has maximum winds near 35 mph/55 kmh, and is about 445 miles (715 km) south-southwest of Manzanillo, Mexico. That's near 13.5 North and 107.8 West. It was moving to the west-northwest at 13 mph/20 kmh and headed away from land and out to sea.

At 11 a.m. EDT (8 a.m. PDT) on July 5, 2012, Tropical Depression 4E became Tropical Storm Danie with maximum sustained winds now near 45 mph (75 kmh). It was located near latitude 14.2 north and longitude 110.5 west. That's about 600 miles (970 km) south of the southern tip of Baja California. Daniel is moving toward the west-northwest near 12 mph (19 kmh). That general motion is forecast to continue, followed by a turn to the west, according to the National Hurricane Center.

Text Credit: Rob Gutro / Hal Pierce
NASA Goddard Space Flight Center / SSAI, Greenbelt, Md.

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/mission_pages/hurricanes/archives/2012/h2012_Daniel.html

More articles from Earth Sciences:

nachricht NASA sees the end of ex-Tropical Cyclone 02W
21.04.2017 | NASA/Goddard Space Flight Center

nachricht New research unlocks forests' potential in climate change mitigation
21.04.2017 | Clemson 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: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

Im Focus: Quantum-physical Model System

Computer-assisted methods aid Heidelberg physicists in reproducing experiment with ultracold atoms

Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...

Im Focus: Glacier bacteria’s contribution to carbon cycling

Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.

A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

New quantum liquid crystals may play role in future of computers

21.04.2017 | Physics and Astronomy

A promising target for kidney fibrosis

21.04.2017 | Health and Medicine

Light rays from a supernova bent by the curvature of space-time around a galaxy

21.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>