The Sciamachy instrument on the Envisat satellite is a powerful monitor of global air pollution.
Today's Exchange provides an overview of some recent science results, featuring NO2 pollution in China and Europe, Methane sources in India, and the rapid increase since 10 years, of air pollution in northeast China.

SCIAMACHY
Scanning Imaging Absorption Spectrometer for Atmospheric Chartography
A-Roll
10:00:40 Every breath we take, we are dependent on the quality of the air we breathe.... Fine dust, smog and air pollution all cast shadows on our atmosphere as the universal giver of life. There is no back-up we can switch to. If mankind is to protect the air we breathe, while supporting a global population of over seven billion people, intelligence gathering must be the key to tackling the problems of our atmosphere.
10:01:05 John Burrows, at the University of Bremen, is the lead scientist of SCIAMACHY: one of the worldís most powerful instruments for measuring global pollution. It maps the exact chemical composition of the global atmosphere once every three days, all year round.
10:01:21 SCIAMACHY does its job from high above us in space, aboard ESAís Envisat satellite, launched four years ago. SCIAMACHY was built jointly by Germany, the Netherlands and Belgium. Using its data Burrows and