The emissions of CO2 are lifts up to 80% of normal levels,” says Airparif. The increase of the pollution is due to road traffic. It was to be expected. The dé
The emissions of CO2 are lifts up to 80% of normal levels,” says Airparif. The increase of the pollution is due to road traffic.
It was to be expected. The déconfinement has seen a surge in air pollution in Île-de-France, which, however, has not yet reached its levels prior to two months of confinement, indicates this Wednesday Airparif.
During the containment, emissions, including those related to road traffic, “had experienced a sharp drop and unprecedented, with emissions divided by four compared to the levels pre-containment”, recalls in a press release the association, which monitors air quality in the capital region.
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“the period from 11 to 31 may, the gradual resumption of activities, and especially of the traffic, has led to a rise in the quantities of pollutants discharged into the atmosphere for nitrogen oxides (a pollutant mainly emitted by road traffic], and particulate matter (PM10 and PM2.5) at levels equivalent to 80% of the observed emission before the confinement, and up to 90% on the boulevard périphérique,” says Airparif.
“Back to normal”
“The CO2 emissions are also resumed an upward trend, with an increase of up to 80% of normal levels,” says Airparif. In terms of the quality of the air, this rise in emissions is reflected by a “return to normal (…) gradual, with an intensity that varies according to the pollutants. But, even now, the pollution levels are close to normal conditions in the Ile-de-France at this time of the year”.
as Well, for fine particulate matter “after a decrease of -7% during the containment, the levels observed usually at this time of the year are reached again”, while for the nitrogen dioxide, the decrease of concentration in the air “is increased from -25% during the containment at 15% on the first 3 weeks of déconfinement”.
Emissions of particulate matter
The lesser decrease of fine particles and their rapid rise is in particular due to their emission sources are more numerous (heating, CONSTRUCTION or agriculture in addition to the road traffic) and the weather conditions.
The increase of pollution, particularly due to traffic, was expected and was also observed by other Approved Associations of Monitoring of the Air Quality regional, as in Occitania or in New Aquitaine, without yet returning to levels prior to the confinement.
Date Of Update: 10 June 2020, 06:58
Categories: Optical Illusion
Source: newstars.edu.vn