Diurnal and seasonal variation, chemical characteristics, and source identification of marine fine particles at two remote islands in South China Sea: A superimposition effect of local emissions and long-range transport

Wu, Chien-Hsing; Yuan, Chung-Shin; Yen, Po-Hsuan; Yeh, Ming-Jie; Soong, Keryea

doi:10.1016/j.atmosenv.2021.118889

Cited by 8 publications

(2 citation statements)

References 66 publications

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“…On the one hand, evaluating the impact of anthropogenic carbonaceous aerosols on the ocean environment is especially important for marine regions that are strongly influenced by continental outflows, such as the Northwest Pacific and the Indian Ocean (Hegde et al., 2022; Z L Wu et al., 2020). Many observational studies have been conducted to address this issue, and traces of anthropogenic carbonaceous aerosols have been found from coastal areas to remote oceans (Aswini & Hegde, 2021; C H Wu et al., 2022). Due to the difficulty of observations, current research on this topic is mostly regional, and studies on a hemispherical or global scale are rare.…”

Section: Introductionmentioning

confidence: 99%

Sources of Southern Hemisphere Marine Aerosols: Insights From Carbonaceous Fraction Concentration and Stable Carbon Isotope Analysis

Gu,

Xie,

Jiang

et al. 2024

JGR Atmospheres

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Marine carbonaceous aerosols, originating from marine and continental sources, are significant global aerosol components. The understanding of marine carbonaceous aerosols is currently limited, especially in the Southern Hemisphere. Furthermore, there is an ongoing debate regarding the contributions of marine fresh and ancient carbon to marine aerosols. To address these gaps, we conducted an extensive investigation utilizing a long‐term data set of aerosol samples collected during six Antarctic cruises (28°N–78°S) from 2013 to 2020. Our analysis revealed an average organic carbon (OC) concentration of 1.29 ± 1.15 μg/m3 and an element carbon (EC) concentration of 0.13 ± 0.18 μg/m3 in the samples. These concentrations varied within a range spanning from background marine samples to those impacted by substantial continental transport. Fossil fuel combustion remained the primary source of continental influence in the marine environment, as evidenced by the OC/EC ratio. The δ13CTC value for all samples range from −22.3‰ to −28.4‰, with a mean value of −26.3 ‰. Using a three‐endmember isotopic source model, we find that continental carbonaceous aerosols make substantial contributions in the Eastern Indian Ocean (81 ± 4%), while their prevalence is lower in the Southern Ocean (SO) (44 ± 20%). In contrast to mid‐latitudes, primary marine aerosol of the SO exhibits a significantly higher contribution from the fresh carbon pool (52 ± 19%). Furthermore, our study suggests that SO sea ice may play a potential role in driving emissions from the fresh carbon pool. These findings contribute to a comprehensive understanding of the effects of carbonaceous aerosols on climate change and the ocean‐atmosphere carbon cycle.

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Section: Introductionmentioning

confidence: 99%

Sources of Southern Hemisphere Marine Aerosols: Insights From Carbonaceous Fraction Concentration and Stable Carbon Isotope Analysis

Gu,

Xie,

Jiang

et al. 2024

JGR Atmospheres

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“…Xue et al [25] discussed the spatiotemporal variation characteristics of NO 2 on Chongming Ecological Island in the vicinity of the Shanghai area using an ozone monitor. Wu et al [26] discovered that the marine fine particulate pollution air mass over the Dongsha and Nansha Islands in the South China Sea came from the Japanese islands, Chinese mainland, and Korean Peninsula. Additionally, it mostly traversed the developed and urbanized parts of East Asia.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Vertical Distribution and Driving Factors of Aerosol and Ozone Precursors in Huaniao Island, China, Based on Ground-Based MAX-DOAS

Ou,

Hu,

Xing

et al. 2023

Remote Sensing

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Urban air pollution has become a regional environmental problem. In order to explore whether island areas were affected by the urban development of surrounding areas, in this paper, we systematically study the vertical distribution characteristics of atmospheric components, meteorological drivers, potential pollution sources, and the population health risks of fine particulate matter in island cities in China. The vertical profiles of three atmospheric pollutants (aerosols, NO2, and HCHO) in the lower troposphere of Huaniao Island in the East China Sea (ECS) were obtained using ground-based multi-axial differential optical absorption spectroscopy (MAX-DOAS). The results show that the aerosol extinction coefficients, NO2, and HCHO were primarily distributed at altitudes below 1 km, and the atmospheric pollutants in Zhoushan were obviously affected by high-altitude transfer. The main meteorological driving factors of aerosols, NO2, and HCHO were different at different altitudes. The key factor contributing to the high column concentrations of NO2 and HCHO in the upper air (greater than 400 m) was the transport of pollutants brought about by changes in wind speed. By exploring the main potential sources of atmospheric pollutants, it was found that the main sources of aerosols, NO2, and HCHO are coastal cities in the Yangtze River Delta, including southeast Zhejiang Province, southeast Fujian Province, Shanghai, ECS, and the Yellow Sea. Compared with aerosols and HCHO, local primary emissions are an important source of NO2, which are mainly related to industrial activities in Zhoushan Port. In addition, using the expose-response function model, the number of attributable cases of PM2.5 air pollution in Zhoushan City in 2019 accounted for 6.58% of the total population. This study enriches our understanding of the vertical distribution characteristics of atmospheric composition and health risk assessment on Chinese islands.

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Route-based chemical significance and source origin of marine PM2.5 at three remote islands in East Asia: Spatiotemporal variation and long-range transport

Yuan

Hung

et al. 2023

Atmospheric Pollution Research

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Diurnal and seasonal variation, chemical characteristics, and source identification of marine fine particles at two remote islands in South China Sea: A superimposition effect of local emissions and long-range transport

Cited by 8 publications

References 66 publications

Sources of Southern Hemisphere Marine Aerosols: Insights From Carbonaceous Fraction Concentration and Stable Carbon Isotope Analysis

Sources of Southern Hemisphere Marine Aerosols: Insights From Carbonaceous Fraction Concentration and Stable Carbon Isotope Analysis

Analysis of the Vertical Distribution and Driving Factors of Aerosol and Ozone Precursors in Huaniao Island, China, Based on Ground-Based MAX-DOAS

Route-based chemical significance and source origin of marine PM2.5 at three remote islands in East Asia: Spatiotemporal variation and long-range transport

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