China’s air quality has improved since the Twelfth Five-Year Plan (2011-2015) was implemented, according to a report on satellite remote monitoring in 2016, which was released by the Chinese Academy of Sciences on June 12, Thepaper.cn reported.
The report made full use of remote sensing data from China’s independently developed resources satellites, meteorological satellites, sea satellites, high-resolution earth observation as well as international remote sensing satellite data. It discussed issues including land use, atmospheric conditions of city clusters and food production, in addition to Beijing-Tianjin-Hebei coordinated development.
(The images show the concentration of NO2 from 2010 to 2015)
According to the report, the national average atmospheric turbidity showed a downward trend from 2010 to 2015. In addition, the concentration of NO2 in most areas of China was reduced during the five-year period, indicating that air-pollution control policies were effectively implemented.
Seasonal variation of NO2 concentrations reflects the important role of anthropogenic discharge, as increased energy use for heating in the winter leads to annual peak concentrations.
In addition, the PM 2.5 concentration steadied from 2010 to 2013, and the period between 2014 and 2015 saw significant decreases from satellite remote sensing images.
(The images show the PM2.5 concentration in Beijing, Tianjin and Hebei from 2010 to 2015)
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