The Atmospheric Infrared Sounder (AIRS) instrument onboard NASA's Aqua satellite measures cloud-top, sea surface and land temperatures. Those are important factors in determining the strength and power of a tropical cyclone.
This infrared image of Carlos\' cold clouds show that there are still bands of thunderstorms to the north of Carlos\' center, picking up energy from the warm waters of the Timor Sea and feeding the storm. The coldest cloud top temperatures appear in purple and are as cold as -63F/-52C. Credit: NASA/JPL, Ed Olsen
Sea surface temperatures need to be at least as warm 26.6 Celsius (80 degrees Fahrenheit) to power a tropical cyclone. Conversely, frigid cloud temperatures, such as those seen in the tops of Carlos' thunderstorms that are as cold as or colder than -52C (-63F) show strong thunderstorms and suggest heavy rainfall.
Even before Carlos became a tropical storm it was a low pressure system that lingered around Darwin, Australia for a couple of days. Over the course of the last four days, Darwin airport reported 26.5 inches of rainfall (673 mm). The largest rainfall total came from Channel Island at 32.87 inches (835 mm).
As Carlos moved south-southwest, those heavy rains continued to fall from those powerful thunderstorms with the cold cloud tops, causing more flooding. The AIRS infrared image from Feb. 17 at 0429 UTC (Feb. 16 at 11:29 p.m. EST) of Carlos' cold clouds showed that there are bands of thunderstorms to the north of Carlos' center. Those bands of thunderstorms are picking up energy from the warm waters of the Timor Sea and feeding the storm, of which the center is over land.
Reports from ABC News Darwin indicated that the Darwin River Dam and the Adelaide River rose significantly. The Territory Wildlife Park in Berry Springs has also reported flooding and their website reported that the park was closed "due to wet weather" because some areas were unsafe for visitors.
At 0900 UTC (4 a.m. EST/ 6:30 p.m. Australia/Darwin local time) on Feb. 17, Carlos had maximum sustained winds near 39 mph. It was located about 75 nautical miles south of Darwin near 13.9 South and 130.6 East. It was moving southwest near 5 knots.
AIRS infrared imagery showed disorganized convection (rising air that forms the thunderstorms that power/make up the tropical cyclone). The low-level circulation is also weakening as it is over land.
Carlos is forecast to continue moving southwest and the Joint Typhoon Warning Center expects Carlos' remnants to move over or south of the Joseph Bonaparte Gulf between 2100 UTC today and 2100 UTC on Feb. 18. As Carlos continues moving southwestward residents in its path should be on guard for moderate to heavy rainfall.
Rob Gutro | EurekAlert!
Mountain glaciers shrinking across the West
23.10.2017 | University of Washington
Climate change weakens Walker circulation
20.10.2017 | MARUM - Zentrum für Marine Umweltwissenschaften an der Universität Bremen
Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
23.10.2017 | Event News
17.10.2017 | Event News
10.10.2017 | Event News
23.10.2017 | Life Sciences
23.10.2017 | Physics and Astronomy
23.10.2017 | Health and Medicine