Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA satellites see heavy rainfall and displaced thunderstorms in System 94B

08.12.2010
System 94B has not been classified as a tropical depression, but NASA satellite data has shown that it is creating heavy rainfall near India's southeastern coast. A second NASA satellite revealed that strong wind shear is continuing to push convection to the northwest of System 94B's center of circulation.

The Tropical Rainfall Measuring Mission (TRMM) satellite viewed an area of thunderstorms associated with System 94B near the east coast of India in the Bay of Bengal on December 7 at 0123 UTC. Data from TRMM's Precipitation Radar (PR) and Microwave Imager (TMI) showed that some severe thunderstorms in this area off the Indian coast were producing very heavy intense rainfall of over 50mm/hr (~2 inches/hour).


NASA\'s TRMM satellite captured rainfall rates within System 94B near India\'s east coast on Dec. 7 at 0123 UTC. The yellow and green areas indicate moderate rainfall between .78 to 1.57 inches per hour. Red areas are heavy rainfall at almost 2 inches per hour. Credit: NASA/SSAI, Hal Pierce

The TRMM satellite's main purpose is to measure rainfall over the tropics but it has also proven very valuable for monitoring development of tropical cyclones. TRMM is a joint mission between NASA and the Japanese space agency JAXA.

On Dec. 7 the center of System 94B was located about 240 nautical miles east-southeast of Chennai, India near 11.4 North latitude and 84.0 East longitude.

NASA's Aqua satellite captured an image of System 94B and continued to show that its main convection (rapidly rising air that forms the thunderstorms that power a tropical cyclone or low pressure area) are northwest of the storm's center of circulation. That's an indication that the strong wind shear that was battering the low pressure area earlier this week is still continuing.

The Atmospheric Infrared Sounder (AIRS) instrument captured an image of System 94B's cold cloud tops on Dec. 6 at 20:11 UTC (3:11 p.m. EST). The image showed most of the strongest convection, and highest, coldest cloud tops remained off-shore over the waters of the western Bay of Bengal. The coldest cloud top temperatures were as cold as or colder than -63 degrees Fahrenheit (-52 Celsius).

The AIRS infrared image did show that there were some strong thunderstorms along the immediate southeastern coast of India, where heavy rain was falling in the state of Tamil Nadu, India.

Tamil Nadu is one of the 28 states and lies in the southernmost part of the Indian Peninsula. Its capital city is Chennai located in the northeastern part of the state.

The Joint Typhoon Warning Center (JTWC) maintains forecast responsibility for this storm. The JTWC noted that maximum sustained winds at the surface are estimated between 20 to 25 knots (23 to 28 mph) and minimum sea level pressure is near 1004 millibars.

Today's JWTC forecast said, "Based on the sheared convection and relatively high vertical wind shear, the potential for the development of a significant tropical cyclone within the next 24 hours remains poor."

So far this year five tropical cyclones have spawned in the Bay of Bengal. Tropical cyclones often form in the Bay of Bengal during the month of November but this area of low pressure isn't expected to intensify to tropical storm strength.

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov

Further reports about: AIRS Aqua satellite Bengal Indian JTWC NASA TRMM satellite UTC cloud tops tropical cyclone tropical diseases wind shear

More articles from Earth Sciences:

nachricht Climate satellite: Tracking methane with robust laser technology
22.06.2017 | Fraunhofer-Gesellschaft

nachricht How reliable are shells as climate archives?
21.06.2017 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Quantum thermometer or optical refrigerator?

23.06.2017 | Physics and Astronomy

A 100-year-old physics problem has been solved at EPFL

23.06.2017 | Physics and Astronomy

Equipping form with function

23.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>