ASAR RA-2 LR GOMOS MERIS MIPAS AATSR MWR DORIS SCIAMCHY SOLAR ARRAY Watch ENVISAT unfold
bbc.co.uk
Home
TV
Radio
Talk
Where I Live
A-Z Index
Front Page | Sci Tech | Envisat

OZONE
Envisat will track the distribution of ozone around the globe with three instruments. Working together, the sensors will measure ozone concentrations from the ground to the top of the ozone layer, creating a three-dimensional map. This should allow better ozone and ultra-violet forecasts within hours of data being gathered as well as an improved understanding of how the ozone layer might repair itself in future years.
OCEANS & EL NINO
Fifty countries around the world could be threatened by rising sea levels because of global warming. Data gathered by Envisat will help explain why and how this might happen. Envisat will also provide data on the weather event El Niño. Envisat’s instruments will be able to detect the giant pool of warm water that moves across the Pacific from west to east during an El Niño event.
POLLUTION
Envisat’s sensors can detect a variety of atmospheric pollutants, including nitrogen oxides from the burning of fossil fuels, sulphur dioxide emissions from factories, chemicals that damage the ozone layer and fine particles from chimneys. It will be able to map pollution, helping scientists to identify sources of pollution and monitor environmental hazards.
GLOBAL WARMING
Human activities such as the burning of forest fuels and deforestation are blamed for altering the chemical composition of the Earth’s atmosphere by creating more carbon dioxide and methane gases. These greenhouse gases trap heat in the atmosphere and cause the planet to warm up. Envisat carries several instruments to monitor global warming, which together will create global, three-dimensional maps of greenhouse gases.
NATURAL DISASTERS
Natural disasters such as floods, storms, mudslides and avalanches have been blamed on global warming but scientists are unsure whether there really is a link. Envisat should provide data on the causes of extreme weather by finding out more about climate change. Envisat will also be important in monitoring natural disasters by providing images to disaster management teams.
FORESTS
Many forests are rapidly disappearing, something that is of great concern to environmentalists. Envisat can provide more data on the global distribution of forests and the most fragile areas of a forest. Using three of its instruments, the satellite will be able to detect how forest cover is changing in threatened areas, every three days.


^^ Back to Top
 © MMII | News Sources | Privacy