Dynamic Variation for SO2 of Atmosphere in Beijing

SO₂ is the second prime contamination of atmosphere pollution in Beijing that can enter our respiratory system and blood circulation system and hazard our body health. Government and a lot of scholars focus the SO₂ pollution. To access efficiency of these control measurements, it is very necessary to confirm the SO₂ concentration of Beijing atmosphere, especial for dynamic variation for the SO₂ concentration of Beijing atmosphere. However, little exists on the study on dynamic variation for the SO₂ concentration of Beijing atmosphere. This paper represents daily, monthly and Inter- annual dynamic variation of SO₂ concentration of Beijing atmosphere base on reference data, Daily Report of Air Quality in Beijing, Beijing Environmental Statement and Beijing Statistic Yearbook. The main conclusions include: 1) SO₂ concentration of Beijing Atmosphere in heating season is larger that in no-heating season . The former is larger the state standard; while the latter is less than the state standard. In addation, SO₂ concentration of Beijing Atmosphere in heating season and no- heating season have similar characteristics. But then, SO₂ concentration of Beijing Atmosphere in heating season have stronge change amplitude. 2) As a whole, during of the course heating season, SO₂ API of Beijing Atmosphere will be larger ones in other times and it will be in the lowest value in July and Augest. Except for considering pollution resource, although there is some relationship between SO₂ of Beijing Atmosphere with atmosphere diffusion, vegetation and rainfall have very great effect on SO₂ of Beijing Atmosphere. 3) In 1981-1998, SO₂ concentration of Beijing atmosphere takes on increase tendency with some fluctuation and in 1999-2006, SO₂ concentration of Beijing atmosphere decreases year after year. This paper helps to provide the scient- ific basis for controlling the polluted air in Beijing.