Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA's MODIS and AIRS instruments watch Igor changing shape, warming over 3 days

21.09.2010
The Moderate Resolution Imaging Spectroradiometer or MODIS, is an instrument that flies on NASA's Aqua and Terra satellites and provides incredible views of tropical cyclones like Hurricane Igor, from its vantage point in space. Imagery from the MODIS instruments on these two satellites captured from Sept. 18 to 20 showed that powerful Hurricane Igor in the Atlantic Ocean is morphing from a rounded storm to more of a comma-shaped storm.

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!
Further information:
http://www.nasa.gov

More articles from Earth Sciences:

nachricht The pace at which the world’s permafrost soils are warming
16.01.2019 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

nachricht Using satellites to measure rates of ice mass loss in glaciers
16.01.2019 | Friedrich-Alexander-Universität Erlangen-Nürnberg

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Flying Optical Cats for Quantum Communication

Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.

In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...

Im Focus: Nanocellulose for novel implants: Ears from the 3D-printer

Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.

It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:

Im Focus: Elucidating the Atomic Mechanism of Superlubricity

The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.

One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...

Im Focus: Mission completed – EU partners successfully test new technologies for space robots in Morocco

Just in time for Christmas, a Mars-analogue mission in Morocco, coordinated by the Robotics Innovation Center of the German Research Center for Artificial Intelligence (DFKI) as part of the SRC project FACILITATORS, has been successfully completed. SRC, the Strategic Research Cluster on Space Robotics Technologies, is a program of the European Union to support research and development in space technologies. From mid-November to mid-December 2018, a team of more than 30 scientists from 11 countries tested technologies for future exploration of Mars and Moon in the desert of the Maghreb state.

Close to the border with Algeria, the Erfoud region in Morocco – known to tourists for its impressive sand dunes – offered ideal conditions for the four-week...

Im Focus: Programming light on a chip

Research opens doors in photonic quantum information processing, optical signal processing and microwave photonics

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new integrated photonics platform that can...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Our digital society in 2040

16.01.2019 | Event News

11th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Aachen, 3-4 April 2019

14.01.2019 | Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

 
Latest News

Artificially produced cells communicate with each other: Models of life

17.01.2019 | Life Sciences

Velcro for human cells

16.01.2019 | Life Sciences

Kiel physicists discover new effect in the interaction of plasmas with solids

16.01.2019 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>