Observing network effect of shipping emissions from space: A natural experiment in the world’s busiest port

Song Liu1; Xicheng Li1; Juan Li1; Lei Shu2; Tzung-May Fu1,3,4; Xin Yang1,3,4; Lei Zhu1,3,4

2023-11-14

10.1093/pnasnexus/pgad391

PNAS Nexus   影响因子和分区

2752-6542

Maritime trade and associated emissions are dynamic in nature. Although shipping emissions contribute significantly to air quality and climate change, their trade-governed dynamics remain less explored due to the lack of observational evidence. Here, we use satellite measurements to capture the redistribution of shipping nitrogen oxides (NOx) emissions from Shanghai port, the world's busiest port, during a natural experiment posted by the localized COVID-19 lockdown in 2022. Viewing the ports as nodes in a network linked by ship journeys, we quantify a lockdown-induced -42% reduction in shipping NOx emissions for Shanghai port. We further identify an emission transfer to its neighboring connected ports, confirmed by comprehensive vessel activity observations. Our study highlights the socioeconomic drivers of shipping emissions, which may add additional layers of complexity to air quality management.

satellite remote sensing shipping NOx emission network effect emission transfer

ESCI

英语

第一 ; 通讯

National Natural Science Foundation for Young Scientists of China[42205134] ; Key-Area Research and Development Program of Guangdong Province[2020B1111360001] ; Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks[ZDSYS20220606100604008] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515110713] ; Guangdong Basic and Applied Basic Research Fund[2020B1515130003] ; Guangdong University Research Project Science Team[2021KCXTD004] ; Shenzhen Science and Technology Program["KQTD20210811090048025","JCYJ20210324104604012","JCYJ20220530115404009"]

Science & Technology - Other Topics ; Social Sciences - Other Topics

Multidisciplinary Sciences ; Social Sciences, Interdisciplinary

WOS:001186389900003

OXFORD UNIV PRESS

人工提交

1.School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
2.School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China
3.Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Greater Bay Area, Shenzhen 518055, China
4.Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks, School of Environmental Scienceand Engineering, Southern University of Science and Technology, Shenzhen 518055, China

Song Liu,Xicheng Li,Juan Li,等. Observing network effect of shipping emissions from space: A natural experiment in the world’s busiest port[J]. PNAS Nexus,2023,2(11).

Song Liu.,Xicheng Li.,Juan Li.,Lei Shu.,Tzung-May Fu.,...&Lei Zhu.(2023).Observing network effect of shipping emissions from space: A natural experiment in the world’s busiest port.PNAS Nexus,2(11).

Song Liu,et al."Observing network effect of shipping emissions from space: A natural experiment in the world’s busiest port".PNAS Nexus 2.11(2023).