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
When fluid flows almost as fast as light -- with quantum rotation
22.06.2018 | The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Thermal Radiation from Tiny Particles
22.06.2018 | Universität Greifswald
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences