World slowly obscuring pollution
Tuesday, March 17, 2009
BRUSSELS, March 17, 2009 (IPS) - The increasing pollution is visible on clear days reduced worldwide since the seventies. The authors of the study in the scientific journal Science talk about 'global dimming'.
Scientists from the University of Maryland combined data on the profile were collected from 3250 weather stations around the world between 1973 and 2007. It showed that visibility is reduced. The trend to combine satellite images with the pollution record, they could expose the link.
The phenomenon is particularly evident over South East Asia, South America, Australia and Africa. In North America, the situation in Europe was stable and she lights up ahead. The scientists attributed the trend to the growth of industrial activity in China and India, while more stringent emissions rules in Europe to improve care since the eighties.
Major culprits for the reduced visibility are aerosols, tiny particles which include the burning of fossil fuels, industrial processes and the flat tires on the rain in the atmosphere.