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 Wintertime Arctic sea ice growth slows long-term decline: NASA
07.12.2018 | NASA/Goddard Space Flight Center

nachricht Why Tehran Is Sinking Dangerously
06.12.2018 | Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

Im Focus: Researchers develop method to transfer entire 2D circuits to any smooth surface

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.

Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...

Im Focus: Three components on one chip

Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.

Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

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

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

New discoveries predict ability to forecast dementia from single molecule

12.12.2018 | Health and Medicine

CCNY-Yale researchers make shape shifting cell breakthrough

12.12.2018 | Physics and Astronomy

Pain: Perception and motor impulses arise in the brain independently of one another

12.12.2018 | Health and Medicine

VideoLinks
Science & Research
Overview of more VideoLinks >>>