A series of NASA infrared images of Hurricane Joaquin from October 1 to 6 show the development and movement of the storm, and its moisture stream into South Carolina.
The Atmospheric Infrared Sounder or AIRS instrument flies aboard NASA's Aqua satellite, which circles the Earth twice a day. AIRS gathers temperature data using infrared light, and took many images of Hurricane Joaquin from October 1 through October 6.
NASA put together a timeline of the infrared imagery showing the movement of Hurricane Joaquin and the plume of moisture connected to the Category Four storm that streamed over South Carolina.
The AIRS imagery showed Joaquin over the Bahamas on October 1 and then as it moved north, connected with another weather system that brought intense rainfall and both inland and coastal flooding to South Carolina.
That moisture plume is visible on the AIRS imagery from October 2 through October 4 where thunderstorms with very high, cold cloud tops made a line from the Bahamas to the U.S. mainland. Cloud top temperatures in the line of storms were as cold as or colder than -63 Fahrenheit/-53 Celsius. NASA research has shown that cloud tops that cold can produce heavy rain.
Cloud top temperatures around the eye of Hurricane Joaquin were even colder. Some cloud tops were in excess of -81F/-63C/210K.
Looking at Joaquin's Winds
As AIRS looked at cloud top temperatures another NASA instrument looked at surface wind speed in Joaquin. On October 7 at 12:00 a.m. EDT, the RapidScat instrument that flies aboard the International Space Station saw the sustained winds in Hurricane Joaquin. Strongest winds measured 40.5 meters per second (90.6 mph/145.8 kph) in all quadrants of the storm except the northeastern quadrant where winds were less intense. RapidScat measures wind speed at the surface which is always lower than speeds at higher altitude.
Where is Joaquin Now?
At 11 a.m. EDT (1500 UTC) on October 7, 2015 the center of Tropical Storm Joaquin was located near latitude 41.0 North and longitude 45.6 West. That's about 540 miles (870 km) southeast of Cape Race Newfoundland, Canada. Joaquin was moving toward the east-northeast near 35 mph (56 km/h) and the National Hurricane Center expects that motion to continue for the next day or two with some decrease in forward speed forecast on Friday.
Maximum sustained winds have decreased to near 70 mph (110 kph) and some weakening is forecast during the next 48 hours. Joaquin is forecast to become a large extratropical cyclone by Thursday.
Rob Gutro | EurekAlert!
Predicting unpredictability: Information theory offers new way to read ice cores
07.12.2016 | Santa Fe Institute
Sea ice hit record lows in November
07.12.2016 | University of Colorado at Boulder
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
09.12.2016 | Life Sciences
09.12.2016 | Ecology, The Environment and Conservation
09.12.2016 | Health and Medicine