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Variation of the Air Mass Exposure to Chlorophyll Over Eastern China Seas: an Insight into Marine Biogenic Aerosols
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  • Shengqian Zhou,
  • Ying Chen,
  • Fanghui Wang,
  • Yang Bao,
  • Zongjun Xu,
  • Xiping Ding
Shengqian Zhou
Fudan University
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Ying Chen
Fudan University

Corresponding Author:[email protected]

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Fanghui Wang
Fudan University
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Yang Bao
Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus
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Zongjun Xu
Fudan University
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Xiping Ding
Pudong New District Environmental Monitoring Station
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Abstract

Marine biological activities make substantial influences on aerosol composition and properties. The eastern China seas are highly productive with significant emissions of biogenic substances. Air mass exposure to chlorophyll a (AEC) can be used to indicate the influence of biogenic source on the atmosphere to a certain degree. In this study, the 12-year (2009–2020) daily AEC were calculated over the eastern China seas showing the spatial and seasonal patterns of marine biogenic influence intensity are co-controlled by surface phytoplankton biomass and boundary layer height. The AEC was linearly correlated with aerosol methanesulfonate (MSA) in each of three sub-regions, and the constructed parameterization scheme was applied to simulate the spatiotemporal variation of marine biogenic MSA. This AEC-based approach with observation constraints provides a new insight into the distribution of marine biogenic aerosols which may become increasingly important with the decline of terrestrial input to the studied region.