Quantifying wind-induced impacts on particulate Cu footprint in the Yangtze Estuary

Zeng Yichuan; Wang Hua; Liang Dongfang; Yuan Weihao; Li Bao; Zhuang Wei; John Paul Kaisam; Shen Wenbo

doi:10.1016/j.chemosphere.2020.128426

Quantifying wind-induced impacts on particulate Cu footprint in the Yangtze Estuary

Chemosphere. 2021 Feb;264(Pt 1):128426. doi: 10.1016/j.chemosphere.2020.128426. Epub 2020 Sep 29.

Authors

Zeng Yichuan¹, Wang Hua², Liang Dongfang³, Yuan Weihao¹, Li Bao⁴, Zhuang Wei⁵, John Paul Kaisam¹, Shen Wenbo¹

Affiliations

¹ Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China.
² Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China. Electronic address: wanghua543543@163.com.
³ Department of Engineering, University of Cambridge, Cambridge, CB2 1PZ, UK.
⁴ Hydrology and Water Resources Survey Bureau of Yangtze Estuary, Shanghai, 200120, China.
⁵ Nanjing Institute of Environmental Sciences, MEP, Nanjing, 210042, China.

PMID: 33022508
DOI: 10.1016/j.chemosphere.2020.128426

Abstract

Under two wind conditions, a polar coordinated segmented quantification method (PCSQM) taking the easternmost point of Chongming Island (121°59'20″E, 31°29'38″N) as the origin of the coordinate was proposed to quantify wind-induced impacts on the heavy metal footprint emitted from four simulation sites on the main waterway of the Yangtze Estuary. One wind condition was that of a real wind field in 2019 called Case 1; the other one was a combination of monthly maximum wind speed selected from 1989 to 2019 called Case 2. In the comparison of these two conditions, the PCSQM was used to calculate the footprint excursion of four simulation sites mentioned, including three major urban sewage outlets and the upstream pollution source, represented by Xuliujing (XLJ) during the biological sensitive aggregation period of the Yangtze Estuary (BAPYE). The results showed that the Cu footprint was closer to Chongming Island and showed a trend of narrowing its coverage under Case2 compared with Case1. The Southeast section of the XLJ had the broadest width (83.46 km), while the Southwestern section of BLG had the narrowest width (3.52 km). Coincidentally, both the maximum (-29.99%) and the minimum excursion (-0.13%) were derived from XLJ, corresponding to its Southeast section and Southwest section.

Keywords: Cu footprint; Excursion; Segmented quantification; Wind-induced; Yangtze estuary.

MeSH terms

China
Environmental Monitoring
Estuaries*
Metals, Heavy* / analysis
Rivers
Wind

Substances

Metals, Heavy