Effects of the sea-land breeze on coastal ozone pollution in the Yangtze River Delta, China

Zhao, Dandan; Xin, Jinyuan; Wang, Weifeng; Jia, Danjie; Wang, Zifa; Xiao, Hang; Liu, Cheng; Jun, Zhou; Tong, Lei; Ma, Yongjing; Wen, Tian; Wu, Fuzhong; Wang, Lili

doi:10.1016/j.scitotenv.2021.150306

Cited by 43 publications

(15 citation statements)

References 40 publications

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“…Generally similar to the previous studies about the inuence of sea breeze affecting the coastal urban regions, [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] the processes for producing these types of high O 3 events at the Long Island south shore include: (1) the transport of urban plumes over the ocean south of Long Island, (2) chemical reactions in these polluted plumes to form high ozone in the shallow marine boundary layer, (3) a late-aernoon marine ow carrying this high ozone plume to Long Island. However, the discrepancy comes from the marine ow being blocked by various meteorological conditions (i.e., New York Bight Jet, weak sea breeze front, synoptic stationary front, etc.)…”

Section: South Shore Cases: Late-aernoon Marine Winds Returning Aged...supporting

confidence: 84%

Unraveling the interaction of urban emission plumes and marine breezes involved in the formation of summertime coastal high ozone on Long Island

Zhang

Catena

Shrestha

et al. 2022

Environ. Sci.: Atmos.

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Section: South Shore Cases: Late-aernoon Marine Winds Returning Aged...supporting

confidence: 84%

Unraveling the interaction of urban emission plumes and marine breezes involved in the formation of summertime coastal high ozone on Long Island

Zhang

Catena

Shrestha

et al. 2022

Environ. Sci.: Atmos.

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“…Affected by sea and land winds, a complex correlation existed between WDSP and O 3 in Qingdao. Sea breezes can not only lead to the accumulation of land air pollutants but can also lead to pollutant diffusion and transport [ 17 ]. This could result in the absence of obvious short-term coherence between WDSP and O 3 .…”

Section: Resultsmentioning

confidence: 99%

“…From 2016 to 2020, the proportion of Chinese cities at the prefecture level and above with the daily maximum 8-h average (DMA8) O 3 concentration exceeding the national secondary standard (160 μg/m 3 ) was 17.5%, 32.3%, 34.6%, 30.6%, and 16.6% [ 4 , 5 , 6 , 7 , 8 ]. Many previous studies have examined O 3 pollution in the North China Plain, Yangtze River Delta, and Pearl River Delta [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. When a certain O 3 concentration is exceeded, this can exert an adverse impact on the ecological environment, food safety, human health, and climate change [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Variation in Ground Level Ozone and Its Driving Factors: A Comparative Study of Coastal and Inland Cities in Eastern China

Zhou

Zhang

2022

IJERPH

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Variations in marine and terrestrial geographical environments can cause considerable differences in meteorological conditions, economic features, and population density (PD) levels between coastal and inland cities, which in turn can affect the urban air quality. In this study, a five-year (2016–2020) dataset encompassing air monitoring (from the China National Environmental Monitoring Centre), socioeconomic statistical (from the Shandong Province Bureau of Statistics) and meteorological data (from the U.S. National Centers for Environmental Information, National Oceanic and Atmospheric Administration) was employed to investigate the spatiotemporal distribution characteristics and underlying drivers of urban ozone (O3) in Shandong Province, a region with both land and sea environments in eastern China. The main research methods included the multiscale geographically weighted regression (MGWR) model and wavelet analysis. From 2016 to 2019, the O3 concentration increased year by year in most cities, but in 2020, the O3 concentration in all cities decreased. O3 concentration exhibited obvious regional differences, with higher levels in inland areas and lower levels in eastern coastal areas. The MGWR analysis results indicated the relationship between PD, urbanization rate (UR), and O3 was greater in coastal cities than that in the inland cities. Furthermore, the wavelet coherence (WTC) analysis results indicated that the daily maximum temperature was the most important factor influencing the O3 concentration. Compared with NO, NO2, and NOx (NOx≡ NO + NO2), the ratio of NO2/NO was more coherent with O3. In addition, the temperature, the wind speed, nitrogen oxides, and fine particulate matter (PM2.5) exerted a greater impact on O3 in coastal cities than that in inland cities. In summary, the effects of the various abovementioned factors on O3 differed between coastal cities and inland cities. The present study could provide a scientific basis for targeted O3 pollution control in coastal and inland cities.

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“…Studies have shown that in summer, sea breeze circulation occurs with a frequency of over 50% and can penetrate more than 100 km horizontally inland in China [20][21][22]. Many researchers have confirmed the adverse effects of sea breeze circulation on air quality in coastal areas [23][24][25][26][27][28][29][30][31][32]. The recirculation effect of sea breeze on pollutants and the formation of a thermal inner boundary layer limiting the vertical dispersion of pollutants were identified as the main reasons for the deterioration of air quality in coastal areas due to the sea breeze circulation [33].…”

Section: Introductionmentioning

confidence: 99%

Impact of Sea Breeze on the Transport of Ship Emissions: A Comprehensive Study in the Bohai Rim Region, China

Chen

et al. 2022

Atmosphere

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Air pollutants from ship exhaust have a negative impact on air quality in coastal areas, which can be greatly exacerbated by sea breeze circulation. However, our understanding of this issue is still limited, especially in coastal areas with a complex topography and winding coastlines, such as the Bohai Rim region in China. In order to fill this knowledge gap, the Weather Research and Forecast model coupled with the chemistry (WRF/Chem) modeling system was employed to investigate the influence of sea breeze circulation on the transport of PM2.5 emitted by ships from April to September in 2014. The major findings are as follows: (1) The concentration of PM2.5 due to ship emissions was 2.94 μg/m3 on days with a sea breeze and 2.4 times higher than on days without a sea breeze in coastal cities in the region. (2) The difference in the contribution of ship emissions during days with a sea breeze and days without a sea breeze decreases with increasing distance from the coastline but remains non-negligible up to 50 km inland. (3) The shape of the coastline, the topographic height of the land area, and the latitude have a significant impact on sea breeze circulation and thus on the transport of ship emissions. (4) The differences in the contribution of ship emissions under days with a sea breeze versus days without a sea breeze were more evident than those under onshore versus alongshore and offshore winds, indicating that sea breeze circulation can cause cyclic accumulation of pollutants and thus reinforce the impact of ship emissions on coastal air quality more than by onshore winds. It should be emphasized that during the switching from sea breeze to a non-sea breeze, the pollutants that have been transported to the land area by sea breeze have not yet been carried back to sea, resulting in the ship contribution value still not significantly reduced even if the wind is a non-sea breeze at that moment. In addition, other factors e.g., emissions, precipitation, and chemistry can also play an important role in the observed trends in this study.

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Effects of the sea-land breeze on coastal ozone pollution in the Yangtze River Delta, China

Cited by 43 publications

References 40 publications

Unraveling the interaction of urban emission plumes and marine breezes involved in the formation of summertime coastal high ozone on Long Island

Unraveling the interaction of urban emission plumes and marine breezes involved in the formation of summertime coastal high ozone on Long Island

Spatiotemporal Variation in Ground Level Ozone and Its Driving Factors: A Comparative Study of Coastal and Inland Cities in Eastern China

Impact of Sea Breeze on the Transport of Ship Emissions: A Comprehensive Study in the Bohai Rim Region, China

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