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Quantifying coal power plant responses to tighter SO^sub 2^ emissions standards in China

Karplus, Valerie J ; Zhang, Shuang ; Almond, Douglas

Proceedings of the National Academy of Sciences - PNAS, 2018-07, Vol.115 (27), p.7004 [Revista revisada por pares]

Washington: National Academy of Sciences

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Título:
Quantifying coal power plant responses to tighter SO^sub 2^ emissions standards in China
Autor: Karplus, Valerie J ; Zhang, Shuang ; Almond, Douglas
Materias: Air pollution ; Air pollution measurements ; Air quality ; Coal-fired power plants ; Cogeneration ; Continuous emissions monitoring systems ; Electric power generation ; Emission standards ; Emissions control ; Environmental impact ; Monitoring systems ; Outdoor air quality ; Pollution monitoring ; Power plants ; Quality control ; Stack emissions ; Sulfur ; Sulfur dioxide
Es parte de: Proceedings of the National Academy of Sciences - PNAS, 2018-07, Vol.115 (27), p.7004
Descripción: We evaluate the impact of China’s new air pollution standards on sulfur dioxide (SO2) emissions by comparing newly available data from Continuous Emissions Monitoring Systems (CEMS) at coal power plants with satellite measures. First, we show that following the July 2014 deadline for implementing tighter emissions standards, stack concentrations of SO2 reported by CEMS declined by 13.9%. Second, on average the ratios of the declines of SO2 measures in the satellite data and the CEMS data are about 0.5. However, the degree of correspondence between the two data sources varies by policy stringency, with weak correspondence found in key regions facing the toughest new limits. Third, large plants achieved compliance earlier than small (typically) power and heat cogeneration plants. To achieve continued air quality improvement, our results suggest a need for increased scrutiny of emissions data quality and monitoring practices and clear long-term targets.
Editor: Washington: National Academy of Sciences
Idioma: Inglés

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Quantifying coal power plant responses to tighter SO^sub 2^ emissions standards in China

Karplus, Valerie J ; Zhang, Shuang ; Almond, Douglas

Washington: National Academy of Sciences

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