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© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 21 Aug 2018

Research article | 21 Aug 2018

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This discussion paper is a preprint. A revision of the manuscript is under review for the journal Atmospheric Chemistry and Physics (ACP).

Ambient measurement of shipping emissions in Shanghai port areas

Xinning Wang1, Yin Shen1, Yanfen Lin1, Jun Pan1, Yan Zhang2, Peter K. K. Louie3, Mei Li4, and Qingyan Fu1 Xinning Wang et al.
  • 1Shanghai Environmental Monitoring Center, Shanghai 200030, P.R. China
  • 2Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, P.R. China
  • 3Hong Kong Environmental Protection Department, Hong Kong, P.R. China
  • 4Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, China

Abstract. Growing shipping activities in port areas have generated negative impacts on climate, air quality and human health. To better evaluate the environmental impact of shipping emissions, ambient air quality measurement was carried out at Shanghai port in the summer of 2016. Large throughput capacity and busy shipping traffics of Shanghai port make it an ideal place to characterize shipping emissions. Gaseous (NO, NO2, SO2, O3) and particulate concentrations (PM2.5), particle sizes and chemical composition of individual shipping emission particles were continuously monitored for 3 months. High temporal resolution data show that shipping emissions is a major culprit of local air pollution problems. Distinct shipping emission plumes were observed using online measurement in port area. The SO2 and Vanadium particles numbers were found to correlate best with shipping emissions in Shanghai port. Single particle mass spectra of fresh shipping emission were identified based on the dominant peaks of Sulfate, EC and indicative metals of V, Ni, Fe and Ca, and nitrate peaks in aged particles. Fresh shipping emission particles mainly concentrated in ultra-fine size range where their number contributions are more apparent than their mass. For the coastal port it is found appropriate to separate shipping emissions from land-based emissions by prevalent wind directions. Advanced measurement conducted in the present study show that in port region shipping emissions contributed 36.4 % SO2, 0.7 % NO, 5.1 % NO2, −0.9 % O3, 5.9 % PM2.5, 49.5 % Vanadium particles if land-based emissions were included, and 57.2 % SO2, 71.9 % NO, 30.4 % NO2, −16.6 % O3, 27.6 % PM2.5, 77.0 % Vanadium particles if land-based emissions were excluded.

Xinning Wang et al.
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Status: final response (author comments only)
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Xinning Wang et al.
Xinning Wang et al.
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Short summary
Shipping emission was online measured in the largest port (Shanghai port) and their contributions to the degradation of protside air quality were quantitatively assessed. Shipping emmission contribute gasous SO2 and Vanadium greatly in portside. For coastal port the emissions from land sources may be large. Local wind directions are indispensable to seperate land emissions from ship emission. Fresh shipping particles are small and their number concentrations are more important than mass.
Shipping emission was online measured in the largest port (Shanghai port) and their...