NASA's Aqua satellite passed over Hurricane Gilma on August 9 at 5:53 a.m. EDT. The Atmospheric Infrared Sounder (AIRS) instrument captured an infrared image of the cloud temperatures that showed the strongest storms and heaviest rainfall were wrapped around the storm's center.
NASA's Aqua satellite passed over Hurricane Gilma on Aug. 9 at 5:53 a.m. EDT. The AIRS instrument captured an infrared image of the cloud temperatures that showed the strongest storms (purple) and heaviest rainfall was wrapped around the storm's center.
Credit: NASA JPL, Ed Olsen
Cloud top temperatures in that area were as cold as -63 Fahrenheit (-52 Celsius), indicating very strong thunderstorms (a tropical cyclone is made up of hundreds of thunderstorms), with potentially heavy rainfall. The higher a cloud top extends into the atmosphere, the colder it is, and that data is picked up by the AIRS instrument onboard the Aqua satellite.
On August 9, 2012 at 11 a.m. EDT (8 a.m. PDT) Gilma's maximum sustained winds are near 75 mph (120 kmh), down from 80 mph (130 kmh) which makes Gilma a category one hurricane on the Saffir-Simpson Hurricane wind scale. Gilma was far from land and its center was about 715 miles (1,155 km) southwest of the southern tip of Baja California, near latitude 16.2 north and longitude 118.6 west. Gilma is moving toward the west-northwest near 7 mph (11 kmh). Forecasters expect Gilma to turn to the northwest because a ridge of high pressure that has been guiding it is now weakening.
The National Hurricane Center expects Gilma to start weakening over the next day as it moves into an area of cooler waters. AIRS also provides temperature data on sea surface temperatures, and has observed declining temperatures north of Gilma's current location in the Eastern Pacific Ocean. Waters of 80 degrees Fahrenheit (26.6 Celsius) are needed to maintain a tropical cyclone, and Gilma is headed for waters cooler than that over the next couple of days.
Watching Two Other Areas
Forecasters at the National Hurricane Center (NHC) are now watching two additional areas of low pressure to the east of Gilma. The first area is several hundred miles south-southwest of Acapulco, Mexico. The NHC gives this low a meager 10 percent chance of development in the next two days because it appeared more disorganized today on satellite imagery. The second area is a trough (elongated area) of low pressure along Mexico's west coast. That low may interact with Tropical Storm Ernesto which is poised to cross from the Gulf of Mexico into the Pacific. However, because of upper level winds, this low pressure area also has a 10 percent chance of development in the next two days.
Rob Gutro | EurekAlert!
AWI researchers measure a record concentration of microplastic in arctic sea ice
24.04.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Climate change in a warmer-than-modern world: New findings of Kiel Researchers
24.04.2018 | Christian-Albrechts-Universität zu Kiel
At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...
Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
25.04.2018 | Physics and Astronomy
25.04.2018 | Physics and Astronomy
25.04.2018 | Information Technology