Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA sees heavy rainfall in Typhoon Roke

21.09.2011
NASA's Tropical Rainfall Measuring Mission satellite is providing forecasters with a look at the intense rainfall within Typhoon Roke as it continues to near the big island of Japan. TRMM has seen areas with the typhoon where rain is falling at 2 inches/50 mm per hour, and headed to areas of Japan already soaked since last week.

Japanese authorities are calling for evacuations as Typhoon Roke nears because of flooding concerns. According to the Australian Broadcasting Corporation, about 1.1 million people in Nagoya in central Japan's Aichi prefecture were told to evacuate, and other cities in western Japan were given the same request. Heavy rains already occurring in Aichi on Sept. 20 were causing rivers to overflow, according to NHK news. Flash flooding and landslides are of particular concern, especially in the city of Nagoya.


This 3-D image created from the TRMM satellite's data shows convective storm towers near Typhoon Roke's center of circulation reached to heights of almost 15 km (~9.3 miles). Red indicates heavy rainfall (2 inches/50 mm per hour). Credit: Credit: SSAI/NASA, Hal Pierce

The Tropical Rainfall Measuring Mission (TRMM) satellite passed over Typhoon Roke on September 18 at 1840 UTC (2:40 p.m. EDT). TRMM Precipitation Radar (PR) data showed that Roke contained several areas of heavy rainfall on the eastern side near the center of the storm. Some powerful storms near Roke's center were dropping rainfall at a rate greater than 50mm/hr (~2 inches). TRMM's Microwave Imager (TMI) also revealed that there was a large rain band between Roke and the main islands of Japan. TRMM shows that this large area of rainfall contained smaller lines of intense convective storms.

Tropical storm Roke already had a well defined circulation on September 18 at 1940 UTC (3:40 p.m. EDT) and when the TRMM satellite passed over Roke again on Sept. 19 at 1351 UTC (9:51 a.m. EDT) it had strengthened into a typhoon. TRMM captured the rainfall rates within Roke at that time. The infrared image was created at NASA's Goddard Space Flight Center in Greenbelt, Md. It was created using TRMM's Visible and InfraRed Scanner (VIRS) instrument overlaid with rainfall derived from TRMM PR and TMI data and showed that Roke had a well defined eye, circled by intense bands of rainfall.

A 3-D image of Roke was also created from TRMM data that showed the heights of the towering clouds near Roke's eyewall using data from TRMM Precipitation Radar (PR). Some powerful storms in Roke's eye wall reached to heights of almost 15 km (~9.3 miles). Roke's eye is about 15 miles in diameter and heavy rainfall surrounds it.

Japan's NHK news reported heavy rainfall already in parts of the Miyazaki Prefecture in Kyushu, where 400 millimeters (15.75 inches) had already fallen in one day and over 1,000 millimeters (39 inches) had fallen since last Thursday, so the ground is already saturated.

On Sept. 20 at 8 a.m. EDT Typhoon Roke's maximum sustained winds were near 115 knots (132 mph/213 kmh). It was centered 450 nautical miles (833 km/517 miles) southwest of Tokyo but its cloud cover and rains extend over the southern part of the big island of Japan. It was moving to the northeast at 14 knots (16 mph/26 kmh) and generating rough seas with heights to 26 feet (8 meters).

Roke is picking up speed and is expected to make landfall on Wednesday south of Tokyo while continuing to track to the northeast.

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

More articles from Social Sciences:

nachricht Amazingly flexible: Learning to read in your thirties profoundly transforms the brain
26.05.2017 | Max-Planck-Institut für Kognitions- und Neurowissenschaften

nachricht Fixating on faces
26.01.2017 | California Institute of Technology

All articles from Social 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 >>>