Modeling multi‐phase halogen chemistry in the marine boundary layer with size‐segregated aerosol module: Implications for quasi‐size‐dependent approach
Modeling multi‐phase halogen chemistry in the marine boundary layer with size‐segregated aerosol module: Implications for quasi‐size‐dependent approach
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使用尺寸分离气溶胶模块模拟海洋边界层中的多相卤素化学：准尺寸依赖方法的含义
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
H. Akimoto
中科院分区：
文献类型：
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作者：
K. Toyota;M. Takahashi;H. Akimoto
A photochemical box model with size‐segregated aerosol module, which explicitly accounts for size‐dependent chemical properties of sea‐salt particles, has been developed to simulate multi‐phase chemistry of chlorine and bromine in the marine boundary layer (MBL). Simulated results are compared with those obtained by a model that only implicitly accounts for particle size dependence by applying the quasi‐size‐dependent approach (bulk model). It is found that the bulk model fails to capture the decreased volatilization rates of bromine from the small‐sized sea‐salt particles caused by rapid depletion of bromide. This leads to substantial overestimation of gas phase bromine mixing ratios by the bulk model, affecting the behavior of other species such as ozone and NOx that are sensitive to bromine chemistry. The findings warrant the use of size‐segregated model in simulating MBL halogen chemistry.
