OMI satellite observed formaldehyde column from 2006 to 2015 over Xishuangbanna, southwest China, and validation using ground based zenith-sky DOAS

Liu, Rui; Feng, Tao; Wang, Shanshan; Cs, Shi; Guo, Yanlin; Nan, Jialiang; Deng, Yun; Zhou, Bin

doi:10.1016/j.scitotenv.2017.08.210

Cited by 14 publications

(2 citation statements)

References 18 publications

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“…HCHO and NO 2 were considered the most important O 3 precursors, and the ratio of HCHO and NO 2 determined the O 3 formation regimes (Jin et al., 2017; S. Q. Zhu et al., 2021). The satellite and CMAQ predicted results showed the hotspots of NO 2 were mainly in NCP and YRD, while the high levels of HCHO covered large areas in central and southern China due to the relatively high temperature and forest coverage there (R. Liu et al., 2018) (Figure S10 in Supporting Information ). Meanwhile the distributions of HCHO and NO 2 exhibited low levels in southwestern regions due to the low anthropogenic emissions there (Bo et al., 2008; Zheng et al., 2018, 2021).…”

Section: Resultsmentioning

confidence: 99%

Shifts of Formation Regimes and Increases of Atmospheric Oxidation Led to Ozone Increase in North China Plain and Yangtze River Delta From 2016 to 2019

Zhu

Wang

et al. 2023

JGR Atmospheres

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Air pollution poses a great threat to public health and ecological systems in China, especially in the North China Plain (NCP) and Yangtze River Delta (YRD) Zhang, Xue, et al., 2021). Specifically, PM 2.5 (fine particulate matter with an aerodynamic diameter less than 2.5 μm) and O 3 were associated with ∼630,000 and ∼300,000 annual premature deaths in China from 2010 to 2015, respectively (Malley et al., 2017;G. Zhu et al., 2019), and induced severe damage to crop yields (Zhang, Yue, et al., 2021). Aiming to improve air quality and protect public health, the Chinese government has implemented strict pollutant control policies with respect to two stages of the "Air Pollution Prevention and Control Action Plan" (2013-2017) and the Three-Year Action Plan for Winning the Blue Sky Defense Battle (2018)(2019)(2020). Previous studies reported the anthropogenic emissions of SO 2 , NO x , and PM 2.5 decreased by 59%,

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Section: Resultsmentioning

confidence: 99%

Shifts of Formation Regimes and Increases of Atmospheric Oxidation Led to Ozone Increase in North China Plain and Yangtze River Delta From 2016 to 2019

Zhu

Wang

et al. 2023

JGR Atmospheres

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“…Formaldehyde (HCHO) is an important trace gas in atmosphere. It has the irritating effect on human eyes, skin, and respiratory mucosa, and can also cause cancer in high concentration (Zhu et al, 2017a;Liu et al, 2018). Atmospheric HCHO is an intermediate product of almost all volatile organic compounds (VOCs) oxidation, it can be therefore indicative of the overall VOCs level (Chan et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

OMI-observed HCHO in Shanghai, China during 2010–2019 and ozone sensitivity inferred by improved HCHO / NO₂ ratio

Wang

Xue

et al. 2021

Preprint

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Abstract. In recent years, satellite remote sensing has been increasingly used in the long-term observation of ozone (O3) precursors and its formation regime. In this work, formaldehyde (HCHO) data from Ozone Monitoring Instrument (OMI) were used to analyse the temporal and spatial distribution of HCHO vertical column densities (VCDs) in Shanghai from 2010 to 2019. HCHO VCDs exhibited the highest value in summer and the lowest in winter, the high-VCD concentrated in western Shanghai. Temperature largely influence HCHO by affecting the biogenic emissions and photochemical reactions, and industry was the major anthropogenic source. The satellite observed formaldehyde to nitrogen dioxide ratio (FNRSAT) reflects that the O3 formation regime had significant seasonal characteristics and gradually manifested as transitional ozone formation regime dominated in Shanghai. The uneven distribution in space was mainly reflected as the higher FNRSAT and surface O3 concentration in rural area. To compensate the shortcoming of FNRSAT that it can only characterize O3 formation around satellite overpass time, correction of FNRSAT was implemented with hourly surface FNR and O3 data. After correction, O3 formation regime showed the trend moving towards VOC-limited in both time and space, and regime indicated by FNRSAT can better reflect O3 formation for a day. This study can help us better understand HCHO characteristics and O3 formation regime in Shanghai, and also provide a method to improve FNRSAT for characterizing O3 formation in a day, which will be significant for developing O3 prevention and control strategies.

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Spatio-temporal variations and trends of major air pollutants in China during 2015–2018

Maji

Sarkar

2020

Environ Sci Pollut Res

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OMI satellite observed formaldehyde column from 2006 to 2015 over Xishuangbanna, southwest China, and validation using ground based zenith-sky DOAS

Cited by 14 publications

References 18 publications

Shifts of Formation Regimes and Increases of Atmospheric Oxidation Led to Ozone Increase in North China Plain and Yangtze River Delta From 2016 to 2019

Shifts of Formation Regimes and Increases of Atmospheric Oxidation Led to Ozone Increase in North China Plain and Yangtze River Delta From 2016 to 2019

OMI-observed HCHO in Shanghai, China during 2010–2019 and ozone sensitivity inferred by improved HCHO / NO₂ ratio

Spatio-temporal variations and trends of major air pollutants in China during 2015–2018

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OMI satellite observed formaldehyde column from 2006 to 2015 over Xishuangbanna, southwest China, and validation using ground based zenith-sky DOAS

Cited by 14 publications

References 18 publications

Shifts of Formation Regimes and Increases of Atmospheric Oxidation Led to Ozone Increase in North China Plain and Yangtze River Delta From 2016 to 2019

Shifts of Formation Regimes and Increases of Atmospheric Oxidation Led to Ozone Increase in North China Plain and Yangtze River Delta From 2016 to 2019

OMI-observed HCHO in Shanghai, China during 2010–2019 and ozone sensitivity inferred by improved HCHO / NO2 ratio

Spatio-temporal variations and trends of major air pollutants in China during 2015–2018

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OMI-observed HCHO in Shanghai, China during 2010–2019 and ozone sensitivity inferred by improved HCHO / NO₂ ratio