Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Earth from Space: Hurricane Jimena

04.09.2009
This Envisat image captures Hurricane Jimena roaring towards Mexico's Baja California Peninsula on 31 August 2009 (18:09 UT).

Around the time of the acquisition, Jimena had maximum sustained winds of nearly 250 km/h and was just short of being classified as a Category 5 storm – the highest danger rating for a hurricane on the Saffir–Simpson intensity scale.


This Envisat image captures Hurricane Jimena roaring towards Mexico\'s Baja California Peninsula on 31 August 2009 (18:09 UT). Around the time of the acquisition, Jimena had maximum sustained winds of nearly 250 km/h and was just short of being classified as a Category 5 storm – the highest danger rating for a hurricane on the Saffir–Simpson intensity scale. Instruments aboard ESA’s Envisat allow it to observe various features of hurricanes, including cloud structure, wind and wave fields, sea-surface temperature and sea-surface height. Envisat’s Medium Resolution Imaging Spectrometer (MERIS) optical instrument acquired this image working in Full Resolution mode to provide a spatial resolution of 300 m. Credits: ESA

By early Wednesday 2 September, it had weakened to a Category 2 hurricane as its maximum wind speed dropped to 165 km/h, according to the US National Hurricane Center. Later on Wednesday, it was downgraded again to a Category 1 hurricane after its maximum sustained winds decreased to 145 km/h.

The hurricane, which formed on 29 August in the eastern Pacific Ocean, weakened to a tropical storm later on Wednesday after making landfall on the Baja California Peninsula (left). The peninsula lies at the southern tip of North America and is surrounded by water with the Gulf of California, also called the Sea of Cortés, to the east and the Pacific Ocean to the west. Mainland Mexico is visible across the top of the image.

Hurricanes are large powerful storms that rotate around a central area of extreme low pressure. They arise in warm tropical waters that transfer their heat to the air. The warmed air rises rapidly, in the process creating low pressure at the water surface. Winds begin rushing inwards and upwards around this low-pressure zone.

Knowing the strength and path of hurricanes is critical for issuing timely warnings. Earth observation satellites are the best means of providing data on the forces that power the storm.

Instruments aboard ESA’s Envisat allow it to observe various features of hurricanes, including cloud structure, wind and wave fields, sea-surface temperature and sea-surface height. Envisat’s Medium Resolution Imaging Spectrometer (MERIS) optical instrument acquired this image working in Full Resolution mode to provide a spatial resolution of 300 m.

Mariangela D'Acunto | alfa
Further information:
http://www.esa.int/esaEO/SEMDBEFF5ZF_index_0.html

More articles from Physics and Astronomy:

nachricht Magnetic nano-imaging on a table top
20.04.2018 | Georg-August-Universität Göttingen

nachricht New record on squeezing light to one atom: Atomic Lego guides light below one nanometer
20.04.2018 | ICFO-The Institute of Photonic Sciences

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: Spider silk key to new bone-fixing composite

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.

Im Focus: Writing and deleting magnets with lasers

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...

Im Focus: Gamma-ray flashes from plasma filaments

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...

Im Focus: Basel researchers succeed in cultivating cartilage from stem cells

Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.

Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...

Im Focus: Like a wedge in a hinge

Researchers lay groundwork to tailor drugs for new targets in cancer therapy

In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Magnetic nano-imaging on a table top

20.04.2018 | Physics and Astronomy

Start of work for the world's largest electric truck

20.04.2018 | Interdisciplinary Research

Atoms may hum a tune from grand cosmic symphony

20.04.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>