Satellite verification of ultra-low emission reduction effect of coal-fired power plants

In this paper, satellite data from five isolated power plants were used to explore the change local emissions levels belonged to the vicinity of the power plant before and after ultra-low emissions (ULE) retrofitted. Sulphur dioxide (SO2) and nitrogen dioxide (NO2) observations from Ozone monitoring Instrument (OMI) satellite data were used to evaluate the emission changes of the power plants retrofitted by ULE technology. Meanwhile, the actual emission reduction effect of isolated power plants was evaluated by the OMI data. It was observed that the isolated power plants have shown obvious point source characteristics. The average annual SO2 emission reduction ratio of SZ, ZD, JJ, ND and BD power plants after ultra-low transformation is 43.7%, 56.9%, 29.0%, 34.6% and 26.8%, respectively, compared with that before the transformation, while the corresponding PBL-SO2 column concentration reduction ratio is 27.0%, 14.3%, 15.6%, 26.6% and 4.2%, respectively. The average annual NOx emission reduction ratio of the power plants after ultra-low transformation is 44.7%,79.3%,29.0%,73.2% and 29.8%, respectively, compared with that before the transformation, while the corresponding NO2 column concentration reduction ratio is 7.0%,27.2%,25.7%,8.9% and 5.6%, respectively. The trend of emission reduction before and after the ULE retrofitted of SO2 and NO2 column concentration by satellite observation is consistent with the calculated trend of emission reduction. Satellite observations have confirmed the emission reduction effect of ULE technology.

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Fioletov, V.E., Mclinden, C.A., Krotkov, N., et al., 2011. Estimation of SO2 emissions using OMI retrievals[J]. Geophys. Res. Lett. 38 (21). https://doi.org/10.1029/ 2011GL049402. 2011.

Fu-Ying, Q., Gen-Suo, J., Jie, Y., et al., 2018. Spatiotemporal variability of precipitation during 1961-2014 across the Mongolian Plateau. J. Mt. Sci. 992–1005. https://doi. org/10.1007/s11629-018-4837-1. 015(005).

Krotkov, N.A., Mclinden, C.A., Li, C., et al., 2016. Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2015. Atmos. Chem. Phys. 16 (7), 4605–4629. https://doi.org/10.5194/acp-16-4605-2016-supplement.

Karplus, V., Zhang, S., Almond, D., 2018a. Quantifying coal power plant responses to tighter SO2emissions standards in China. Proc. Natl. Acad. Sci. Unit. States Am. 115 (27), 7004–7009. https://doi.org/10.1073/pnas.1800605115.

Karplus, V., Zhang, S., Almond, D., 2018b. Reply to Qi and Dong: policy clarification and robustness of effects. Proc. Natl. Acad. Sci. Unit. States Am. 115 (49), E11430–E11431. https://doi.org/10.1073/pnas.1815003115.

Li, C., Zhang, Q., Krotkov, N.A., et al., 2010. Recent large reduction in sulfur dioxide emissions from Chinese power plants observed by the Ozone Monitoring Instrument. Geophys. Res. Lett. 37 (8), 292–305. https://doi.org/10.1029/2010GL042594.

Li, M., Zhang, Q., Kurokawa, J.I., et al., 2017. MIX: a mosaic Asian anthropogenic emission inventory under the international collaboration framework of the MICS-Asia and HTAP. Atmos. Chem. Phys. 17, 935–963. https://doi.org/10.5194/acp-17-935- 2017.

Liu, F., Beirle, S., Zhang, Q., et al., 2015. NOx lifetimes and emissions of hotspots in polluted background estimated by satellite observations[J]. Atmos. Chem. Phys. Discuss. 15 (17), 24179–24215. https://doi.org/10.5194/acpd-15-24179-2015.

Liu, F., Beirle, S., Zhang, Q., et al., 2016. NOx lifetimes and emissions of cities and power plants in polluted background estimated by satellite observations. Atmos. Chem. Phys. 16, 5283–5298. https://doi.org/10.5194/acp-16-5283-2016.

Liu, F., Beirle, S., Zhang, Q., et al., 2017. NOx emission trends over Chinese cities estimated from OMI observations during 2005 to 2015[J]. Atmos. Chem. Phys. 17, 9261–9275. https://doi.org/10.5194/acp-17-9261-2017. 2017.

Li, M., Patiño-Echeverri, D., 2017. Estimating benefits and costs of policies proposed in the 13th FYP to improve energy efficiency and reduce air emissions of China's electric power sector. Energy Pol. 111, 222–234. https://doi.org/10.1016/j.enpol.2017.09. 011.

Li, M., Patiño-Echeverri, Dalia, Zhang, J., 2019. Policies to promote energy efficiency and air emissions reductions in China's electric power generation sector during the 11th and 12th five-year plan periods: achievements, remaining challenges, and opportunities. Energy Pol. 125, 429–444. https://doi.org/10.1016/j.enpol.2018.10.008.

Liu, X., Gao, X., Wu, X.B., et al., 2019. Updated hourly emissions factors for Chinese power plants showing the impact of widespread ultralow emissions technology deployment. [J] Environmental Science & Technology 53 (5), 2570–2578. https://doi. org/10.1021/acs.est.8b07241.

MEP Ministry of Environmental Protection of China, 2011. General Administration of Quality Supervision. Emissions Standard of Air Pollutants for Thermal Power Plants. No. GB/T 13223−2011, July, 29.

NDRC, National Development and Reform Commission of China, 2014. Ministry of Environmental Protection of China, National Energy Administration of China. The Upgrade and Transformation Action Plan for Coal-Fired Power Energy Saving and Emission Reduction (2014−2020). http://www.gov.cn/gongbao/content/2015/ content_2818468.

Qi, Y., Dong, C.G., 2018. Incorrect policy interpretation affects conclusion on SO2 emissions by coal-fired power plants in China. Proc. Natl. Acad. Sci. Unit. States Am. 115 (49), E11429. https://doi.org/10.1073/pnas.1814665115.

Tang, L., Qu, J., Mi, Z., et al., 2019. Substantial emission reductions from Chinese power plants after the introduction of ultra-low emissions standards. Nature Energy. https://doi.org/10.1038/s41560-019-0468-1. 2019.

Veefkind, J.P., Dehaan, J.F., Sneep, M., et al., 2016. Improvements of the OMI SO2 operational cloud algorithm and comparisons with ground-based radar-lidar observations. Atmospheric Measurement Techniques 9 (12), 6035–6049. https://doi.org/10. 5194/amt-2016-48.

Wang, S., Zhang, Q., Martin, R.V., et al., 2015. Satellite measurements oversee China's sulfur dioxide emission reductions from coal-fired power plants[J]. Environ. Res. Lett. 10 (11). https://doi.org/10.1088/1748-9326/10/11/114015. 114015.

Wu, R., Liu, F., Tong, D., et al., 2019. Air quality and health benefits of China's emission control policies on coal-fired power plants during 2005–2020. Environ. Res. Lett. 14 (9). https://doi.org/10.1088/1748-9326/ab3bae. 094016.

Zhang, Q., Streets, D.G., He, K., 2009. Satellite observations of recent power plant construction in Inner Mongolia, China. Geophys. Res. Lett. 36 (15), 1–5. https://doi.org/ 10.1029/2009GL038984.

Zhang, Q., Geng, G., Wang, S., et al., 2012. Satellite remote sensing of changes in NOx emissions over China during 1996-2010. Chin. Sci. Bull. 57, 2857–2864. https://doi. org/10.1007/s11434-012-5015-4.

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