Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Envisat catches the eye of Typhoon Nida

21.05.2004


The 150-kilometre-per-hour winds of Typhoon Nida brought destruction and death to the Philippines this week. At least 31 people were killed and hundreds more were made homeless as the storm passed across the eastern part of the country on Wednesday.


Filipino children play at a flooded portion of the road clamped with toppled banana trees and coconut trees with shredded leaves after Typhoon Nida hit the coastal town of Gigmoto, Catanduanes province, southeast of Manila, Wednesday May 19, 2004. The powerful typhoon triggered landslides, destroyed houses and capsized a ferry, killing at least 19 people and leaving hundreds homeless in the Philippines, officials said Wednesday as the storm blew toward Japan.
Credits: AP Photo/Aaron Favila



Envisat acquired this image of the eye of the Typhoon on Tuesday 18 May, using its Medium Resolution Imaging Spectrometer (MERIS) in reduced resolution mode. The 1200-metre resolution image is some 1150 km wide.

The storm caused floods, landslides and agricultural damage. Thousands of people were evacuated, houses were destroyed, trees overturned and a ferry was reported capsized off the town of Canotes on the island of Cebu. Nida then switched direction to head in the direction of Japan.


Typhoon is the term used for a tropical cyclone with winds of 119 km per hour or more, arising in the western North Pacific Ocean. The equivalent named in the North Atlantic or elsewhere in the Northern Hemisphere is hurricane.

Whatever their name, tropical cyclones 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. The spin of the wind is encouraged by the Coriolis effect of the Earth’s rotation – counter-clockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere.

The eye of a tropical cyclone is an area of relatively light winds and mild weather found at its centre, the zone of low pressure around which the rest of the storm revolves – the lower its pressure, the greater the strength of the storm.

The Philippines gets struck by around 20 storms and typhoons annually, and already forecasters have spotted another tropical storm – known as Omais – forming east of the country.

About MERIS

MERIS is one of ten sensors on Envisat, looking down from the earthward face of the spacecraft. It works by recording visible and near-infrared radiation reflecting from our planet across a range of up to 15 programmable wavebands, to a resolution of either 1200 or 300 metres.

This flexibility and the excellent radiometric and spectral performance designed into the instrument means that scientists can make use of MERIS data across many different fields, variously obtaining information on Earth’s oceans, coastal zones, land surfaces and atmosphere – and potentially combining it with results from other Envisat instruments.



| ESA
Further information:
http://www.esa.int/esaSA/SEMUT8HHZTD_earth_0.html

More articles from Earth Sciences:

nachricht Smaller, more frequent eruptions affect volcanic flare-ups
12.10.2018 | Michigan Technological University

nachricht A new global marine environmental forecasting system will serve the public soon
01.10.2018 | Institute of Atmospheric Physics, Chinese Academy of Sciences

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Disrupting crystalline order to restore superfluidity

When we put water in a freezer, water molecules crystallize and form ice. This change from one phase of matter to another is called a phase transition. While this transition, and countless others that occur in nature, typically takes place at the same fixed conditions, such as the freezing point, one can ask how it can be influenced in a controlled way.

We are all familiar with such control of the freezing transition, as it is an essential ingredient in the art of making a sorbet or a slushy. To make a cold...

Im Focus: Micro energy harvesters for the Internet of Things

Fraunhofer IWS Dresden scientists print electronic layers with polymer ink

Thin organic layers provide machines and equipment with new functions. They enable, for example, tiny energy recuperators. In future, these will be installed...

Im Focus: Dynamik einzelner Proteine

Neue Messmethode erlaubt es Forschenden, die Bewegung von Molekülen lange und genau zu verfolgen

Das Zusammenspiel aus Struktur und Dynamik bestimmt die Funktion von Proteinen, den molekularen Werkzeugen der Zelle. Durch Fortschritte in der...

Im Focus: Dynamics of individual proteins

New measurement method allows researchers to precisely follow the movement of individual molecules over long periods of time

The function of proteins – the molecular tools of the cell – is governed by the interplay of their structure and dynamics. Advances in electron microscopy have...

Im Focus: Researchers discover how fatal biofilms form

By severely curtailing the effects of antibiotics, the formation of organized communities of bacterial cells known as biofilms can be deadly during surgeries and in urinary tract infections. Yale researchers have just come a lot closer to understanding how these biofilms develop, and potentially how to stop them.

Biofilms form when bacterial cells gather and develop structures that bond them in a gooey substance. This glue can protect the cells from the outside world...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

5th International Conference on Cellular Materials (CellMAT), Scientific Programme online

02.10.2018 | Event News

Major Project: The New Silk Road

01.10.2018 | Event News

"Boston calling": TU Berlin and the Weizenbaum Institute organize a conference in USA

21.09.2018 | Event News

 
Latest News

The future of electronic devices: Strong and self-healing ion gels

12.10.2018 | Materials Sciences

Light switch: Scientists develop method to control nanoscale manipulation in high-powered microscopes

12.10.2018 | Materials Sciences

Smaller, more frequent eruptions affect volcanic flare-ups

12.10.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>