NASA's Global Hawk landed back at Wallops Flight Facility, Wallops Island, Va., after spending a full day gathering data from the 14th Atlantic Tropical Depression that strengthened into Tropical Storm Nadine during the morning hours of Sept. 12.
This is NASA's Global Hawk's completed flight path for Sept. 11-12 around Tropical Depression 14 (now Tropical Storm Nadine). The Global Hawk completed the second of six vertical “lawn mower cuts” on Sept. 12 and returned to NASA's Wallops Flight Facility, Va. Credit: NASA
The Global Hawk, one of two associated with the HS3 mission, sought to determine whether hot, dry and dusty air associated with the Saharan air layer was being ingested into the storm. This Saharan air typically crosses westward over the Atlantic Ocean and potentially affects tropical cyclone formation and intensification. During its 26 hour flight around Nadine, the Global Hawk covered more than 1 million square kilometers (386,100 square miles) going back and forth over the storm in what's called a "lawnmower pattern." The Global Hawk captured data using instruments aboard and also dropping sensors called sondes into the storm. The dropsonde system ejected the small sensors tied to parachutes that drift down through the storm measuring winds, temperature and humidity.
NASA's Tropical Rainfall Measuring Mission (TRMM) satellite passed over Tropical Storm Nadine on Sept. 12 at 1006 UTC (6:06 a.m. EDT) and captured rainfall rates occurring in the storm. Visible and infrared data were combined from TRMM's Visible and InfraRed Scanner (VIRS) instrument and TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments to create an image of Nadine's rainfall. Most of the tropical storm had light to moderate rainfall, falling at a rate between .78 to 1.57 inches/20 to 40 mm per hour. In the southeastern quadrant TRMM data revealed heavy rain was falling at a rate of 2 inches/50 mm per hour. The TRMM data was processed by the TRMM Team at NASA's Goddard Space Flight Center in Greenbelt, Md. TRMM is managed by both NASA and the Japanese Space Agency, JAXA.
NOAA's GOES-13 satellite provided a visible image of Tropical Storm Nadine at 1445 UTC (10:45 a.m. EDT). The image showed that Nadine was developing a central dense overcast and bands of thunderstorms all around the storm. Like the TRMM image, the GOES image was created at NASA Goddard, but made by the NASA GOES Project.
NASA's Aqua satellite also captured an image of Nadine. The Atmospheric Infrared Sounder (AIRS) instrument aboard Aqua captured an infrared image of Tropical Storm Nadine on Sept. 12 at 0441 UTC (12:41 a.m. EDT) that was created at NASA's Jet Propulsion Laboratory in Pasadena, Calif.
The AIRS image revealed that Nadine developed a signature comma shape. The AIRS image also showed that Nadine had a large area of strong thunderstorms surrounding the center of circulation and in a band south of the center, where cloud top temperatures exceeded the -63 Fahrenheit/-52 Celsius threshold, indicating strong thunderstorms with heavy rainfall, confirming the data from NASA's TRMM satellite.
On Sept. 11 at 1500 UTC (11 a.m. EDT), Tropical Storm Nadine had maximum sustained winds near 60 mph (95 kmh). The National Hurricane Center has forecast additional strengthening and expects Nadine to reach hurricane strength some time tonight, Sept. 12, or on Thursday, Sept. 13. Tropical storm force winds extend outward up to 115 miles (185 km) from the center, making Nadine about 230 miles (370 km) in diameter.
The center of Tropical Storm Nadine was located near latitude 19.1 north and longitude 47.6 west, about 940 miles (1,510 kilometers) east-northwest of the Lesser Antilles. Nadine is moving toward the west-northwest near 15 mph (24 kmh) and the National Hurricane Center expects Nadine to turn toward the northwest followed by a turn toward the north-northwest Thursday night. Nadine's estimated minimum central pressure is 997 millibars. Nadine is expected to remain in a favorable (weak) upper-level wind environment for the next couple of days.
The HS3 mission targets the processes that underlie hurricane formation and intensity change. The data collected will help scientists decipher the relative roles of the large-scale environment and internal storm processes that shape these systems.
HS3 is supported by several NASA centers including Wallops; Goddard; Dryden; Ames Research Center, Moffett Field, Calif.; Marshall Space Flight Center, Huntsville, Ala.; and the Jet Propulsion Laboratory, Pasadena, Calif. HS3 also has collaborations with partners from government agencies and academia.
HS3 is an Earth Venture mission funded by NASA's Science Mission Directorate in Washington. Earth Venture missions are managed by NASA's Earth System Science Pathfinder Program at the agency's Langley Research Center in Hampton, Va. The HS3 mission is managed by the Earth Science Project Office at NASA's Ames Research Center.Text credit: Rob Gutro
Rob Gutro | EurekAlert!
Further reports about: > Aqua satellite > Atlantic mollies > Depression > Earth's magnetic field > GOES satellite > Global Hawk > Goddard Space Flight Center > HS3 > Hurricane Center > NASA > National Hurricane Center > Space > TRMM satellite > Venture Capital Finanzierung > heavy rain > satellites > strong thunderstorms > tropical diseases
GPM sees deadly tornadic storms moving through US Southeast
01.12.2016 | NASA/Goddard Space Flight Center
Cyclic change within magma reservoirs significantly affects the explosivity of volcanic eruptions
30.11.2016 | Johannes Gutenberg-Universität Mainz
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...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy