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Floods And Fires Across Europe Captured From Space

Date:
July 30, 2007
Source:
European Space Agency
Summary:
Highlighting the extreme weather conditions hitting Europe, space sensors aboard ESA's Envisat satellite have detected the worst floodwaters to hit Britain for 60 years and deadly fires raging through southern Europe.

This image of fires burning across Greece and the Balkans was acquired by Envisat’s Medium Resolution Imaging Spectrometer (MERIS) instrument on 26 July 2007 working in Full Resolution mode to provide a spatial resolution of 300 metres.
Credit: ESA

Highlighting the extreme weather conditions hitting Europe, space sensors aboard ESA’s Envisat satellite have detected the worst floodwaters to hit Britain for 60 years and deadly fires raging through southern Europe.

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Heavy rains caused the River Thames to burst its banks on Wednesday, forcing the evacuation of hundreds of homes in Britain’s university city of Oxford. The flooding across England and Wales has left tens of thousands without electricity and water.

The Environment Agency still has three severe flood warnings in place – two on the Thames around Oxford and one on the Ock River near Oxfordshire. In areas where flooding is beginning to recede, sanitation officials are warning of health risks posed by stagnant waters.

Flooding is estimated to be the world's most costly kind of natural disaster. The flooding of June and July in the UK is expected to cost the insurance industry at least 2 billion, according to the Association of British Insurers (ABI). Floods Minister John Healey said recovery and clean-up efforts could take a number of months.

One of the biggest problems during flooding emergencies is obtaining an overall view of the phenomenon, with a clear idea of the extent of the flooded area. Aerial observation is often very difficult due to prohibitive weather conditions and, if the phenomenon is widespread, would be very time-consuming and expensive.

With inundated areas typically visible from space, Earth Observation (EO) is increasingly being used for flood response and mitigation. In October 2000, ESA and the French space agency (CNES) initiated the International Charter on 'Space and Major Disasters', a joint initiative for providing emergency response satellite data free of charge to those affected by disasters anywhere in the world. On 24 July, the UK Environment Agency requested the aid of the Charter.

Heat and fire

While Britain fights floods, southern European countries are battling blazes and searing temperatures that have surpassed 40 degrees Celsius, spawning fires in Greece, Italy and Macedonia.

Fire fighters battled some 1500 blazes within a 24-hour period in parts of central and southern Italy over the weekend. On Tuesday in Italy’s southern region of Puglia, thousands of tourists fled to beaches to escape a fast-burning fire and had to be rescued via boats and helicopters. Local media reports two elderly locals were killed trying to escape the flames.

On Thursday, fires continued to rage across Calabria and Abruzzo as strong winds thwarted fire-fighting efforts. According to the environmental group WWF, at least 4500 hectares of protected areas have burned in the past three weeks in Italy, with the hardest hit areas being Campania, Abruzzo, Calabria, Sicily and Puglia.

Although searing temperatures and tinder dry conditions are to blame for some of the fires, on Wednesday Italian politicians and forestry officials blamed some on arsonists.

On Thursday some 200 fires were reported burning across Greece, where temperatures have been as high as 45 C, with more than a dozen burning out of control. Peloponnese and the island of Cephalonia in the Adriatic off the peninsula's northwest coast are among the worst hit areas.

Major fires are visible from space – satellites detect not only the smoke billowing from major conflagrations but also the burn scars left in their wake and even the fires themselves – appearing as 'hotspots' when scanning the Earth's surface in infrared wavelengths.

For a decade now, ESA satellites have been continuously surveying fires burning across the Earth’s surface. Worldwide fire maps based on this data are now available to users online in near-real time through ESA's ATSR World Fire Atlas (WFA).

The WFA data are based on results from the Along Track Scanning Radiometer (ATSR) instrument onboard ESA’s ERS-2 satellite and the Advanced Along Track Scanning Radiometer (AATSR) onboard Envisat. These twin radiometer sensors work like thermometers in the sky, measuring thermal infrared radiation to take the temperature of Earth's land surfaces.


Story Source:

The above story is based on materials provided by European Space Agency. Note: Materials may be edited for content and length.


Cite This Page:

European Space Agency. "Floods And Fires Across Europe Captured From Space." ScienceDaily. ScienceDaily, 30 July 2007. <www.sciencedaily.com/releases/2007/07/070727115847.htm>.
European Space Agency. (2007, July 30). Floods And Fires Across Europe Captured From Space. ScienceDaily. Retrieved March 27, 2015 from www.sciencedaily.com/releases/2007/07/070727115847.htm
European Space Agency. "Floods And Fires Across Europe Captured From Space." ScienceDaily. www.sciencedaily.com/releases/2007/07/070727115847.htm (accessed March 27, 2015).

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