Analysis of the sulfur dioxide column concentration over Jing-Jin-Ji, China, based on satellite observations during the past decade

• Autorzy: Hou Y. , Wang L. , Zhou Y. , Wang S. , Wang F.
• Języki publikacji: EN

Abstrakty

EN

Atmospheric sulfur dioxide (SO₂) is a major air pollutant and has the most negative effect on atmospheric chemistry. In this study, measurements of SO₂ column concentration obtained from an ozone monitoring instrument (OMI) are used to investigate the temporal and spatial dynamics of SO₂. Temporal and spatial distributions of SO₂ concentrations obtained from OMI over the Beijing-Tianjin-Hebei (Jing-Jin-Ji) region from 2007 to 2016 are presented, and annual changes and trends in the seasonal cycle are shown. The annual variations of SO₂ concentration are found to have decreased 47.6% from 2007 to 2016, and the SO₂ concentration shows a high correlation with SO₂ emissions. SO₂ shows significant cyclical seasonal characteristics over Jing-Jin-Ji, with maximum values in winter and minimum in summer; both temperature and precipitation are negatively correlated with SO₂ concentrations in seasonal variations. In addition, the spatial distribution is unbalanced, and Shijiazhuang-Xingtai-Handan is found to be in highly polluted areas, which may be related to energy consumption. The overall trends in the average annual value of SO₂ in the 13 sites appear to have decreased since 2007, and SO₂ concentrations in the Shijiazhuang-Xingtai-Handan region decreased by 55% during the past decade, so the Chinese government has made great efforts in pollution reduction, and has achieved remarkable results.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2018
• Tom: 27
• Numer: 4
• Opis fizyczny: p.1551-1557,fig.,ref.

Twórcy

autor

Hou Y.

• Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China

autor

Wang L.

• Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China

autor

Zhou Y.

• Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China

autor

Wang S.

• Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China

autor

Wang F.

• Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China

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Identyfikatory

DOI

10.15244/pjoes/77035