NASA satellites see Typhoon Bopha fizzle over weekend
Infrared data from NASA's Aqua satellite have watched the strong thunderstorms in Typhoon Bopha fizzle and shrink in area over the weekend as wind shear increased. Bopha has now dissipated in the South China Sea, just west of Luzon, Philippines.
NASA's Aqua satellite has been providing data on Bopha since the day it formed on Nov. 26. In the storm's last days, Aqua's Atmospheric Infrared Sounder (AIRS) instrument captured infrared data of the storm and showed that cloud top temperatures warmed from Dec. 8 through Dec. 9 as cloud heights fell and thunderstorms lost their punch.
The MODIS instrument aboard NASA's Terra satellite captured this image of Bopha on Dec. 8 at 02:45 UTC (Dec. 7 at 9:45 p.m. EST/US) after it had regained typhoon status and was headed toward Luzon, Philippines.
Credit: NASA Goddard MODIS Rapid Response Team
AIRS infrared data reveals where the coldest, highest cloud tops are located in a tropical cyclone. The coldest cloud tops indicate the strongest storms with the heaviest rain. On Dec. 8, AIRS data revealed a large area of strong thunderstorms surrounded the center of circulation as the storm skirted the west coast of Luzon, the northern Philippines. That same day, Bopha triggered more warnings for the Philippines.
Just one day before, Typhoon Bopha's maximum sustained winds were up to 110 knots (126 mph/203.7 kph), but increased wind shear started taking a toll on the storm. As Bopha moved closer to Luzon (northern Philippines), warnings were posted on Dec. 8. Public storm warning signal #2 was in effect in the Luzon provinces of Ilocos Norte & Sur and La Union; and Public storm warning signal #1 was in effect in the Luzon provinces of Cagayan, Calayan group of islands, Babuyan group of islands, Batanes group of islands, Abra, Apayao, Kalinga, Mt. Province, Benguet, Pangasinan. At 2100 UTC (4 p.m. EST/U.S.), Bopha's maximum sustained winds were near 45 knots (51.7 mph/83.3 kph), so it was still a tropical storm. Overnight on Dec. 8 into Dec. 9, wind shear increased and Bopha weakened into a tropical depression.
By Dec. 9 at 0300 UTC (Dec. 8 at 10 p.m. EST/U.S.) the Joint Typhoon Warning Center issued its final advisory on Bopha. At that time it was a tropical depression located near 18.3 north latitude and 119.2 east longitude, about 240 miles north-northwest of Manila, Philippines. The depression was moving slowly at 3 knots (3.4 mph/5.5 kph) to the northeast and dissipating under adverse atmospheric conditions just west of Luzon.
On Dec. 9, AIRS data showed quite a different picture as the strongest thunderstorms no longer surrounded the center of circulation and were blown away from the center because of wind shear. The area of strong thunderstorms had also diminished greatly, indicating a weakening storm. Wind shear had taken its toll on this once deadly storm and had blown it apart.
Rob Gutro | EurekAlert!
The most recent press releases about innovation >>>
Die letzten 5 Focus-News des innovations-reports im Überblick:
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...
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...
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...
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)...
Germany counts high-precision manufacturing processes among its advantages as a location. It’s not just the aerospace and automotive industries that require almost waste-free, high-precision manufacturing to provide an efficient way of testing the shape and orientation tolerances of products. Since current inline measurement technology not yet provides the required accuracy, the Fraunhofer Institute for Laser Technology ILT is collaborating with four renowned industry partners in the INSPIRE project to develop inline sensors with a new accuracy class. Funded by the German Federal Ministry of Education and Research (BMBF), the project is scheduled to run until the end of 2019.
New Manufacturing Technologies for New Products