The MODIS instrument on NASA's Terra satellite captured a visible image of Igor at 11:30 am on Sept. 18, while MODIS in the Aqua satellite captured Igor's center just southwest of Bermuda on Sept. 19 at 1:30 p.m. EDT. In imagery on both days, Hurricane Igor maintained a rounded shape and its eye was cloud-filled. When the MODIS instrument that flies aboard NASA's Terra satellite captured Igor after it passed Bermuda on Sept. 20 at 11:15 a.m. EDT, the imagery showed the Igor appeared elongated from south to north, and more resembled a comma-shape. There was even an eye visible in the latest image.
The Atmospheric Infrared Sounder Instrument (AIRS) that flies on NASA's Aqua satellite captured infrared images of Hurricane Igor's cold cloud temperatures and cloud cover on Sept. 18, Sept. 19, and Sept. 20. Igor lost its circular shape by Sept. 20, and there were very few high, strong thunderstorms where the cloud tops were colder than -63F. Infrared data from AIRS on Sept. 20 indicated that Igor was losing its strength as the cloud tops in the thunderstorms within were warming (less high in the atmosphere) and waning.
NASA and JAXA's Tropical Rainfall Measuring Mission (TRMM) satellite also continues to fly over Igor as he makes his track northward in the Atlantic Ocean.
Hurrricane Igor continued to weaken as the Tropical Rainfall Measuring Mission (TRMM) satellite passed over on September 19, 2010 at 0144 UTC showing that the hurricane no longer had an eye. Igor's wind speeds had decreased to about 75 knots (~86 mph) when TRMM collected the TRMM Microwave Imager (TMI) data used in the precipitation analysis. TRMM is managed by both NASA and the Japanese Space Agency.
By 2p.m. EDT on Sept. 20, all warnings and watches for Bermuda had been discontinued. Igor had moved about 350 miles north-northeast of Bermuda and was headed into the North Atlantic. It was located near 37.1 North and 62.5 West. Now, a tropical storm watch is in effect for the coast of Newfoundland from Stones Cove northward and Westward to Jones Harbour, Canada.
Igor was just barely a hurricane, with maximum sustained winds near 75 mph. It was moving northeast at 26 mph. Its minimum central pressure was 965 millibars.
Large swells will continue to affect Bermuda and the U.S. East coast through Tuesday, Sept. 21, causing life-threatening rip-currents and rough surf. Swells affecting the Lesser Antilles, the Virgin Islands, Puerto Rico, Hispaniola and the Bahamas will subside over the next couple of days.
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
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...
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,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
08.12.2016 | Life Sciences
08.12.2016 | Physics and Astronomy
08.12.2016 | Materials Sciences