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The contribution of anthropogenic aerosols to aerosol light-scattering and CCN activity in the California coastal zone

机译:人为气溶胶对加利福尼亚沿海地区气溶胶光散射和CCN活性的贡献

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摘要

Aircraft-based measurements of aerosol light-scattering coefficient, cloud condensation nuclei (CCN) measured directly or by proxy, and aerosol chemical composition are reported for three different years in the region of the large stratocumulus deck off the California coast. Receptor modeling is used to differentiate the contributions of the main aerosol sources to the light scattering and CCN activity. The contribution of anthropogenic sources to the two climatically important aerosol parameters (for direct and indirect forcing) varied from year to year but, on average, was found to be 67% in the case of CCN concentration and 57% in the case of light-scattering coefficient.
机译:据报道,在加利福尼亚海岸附近的大型平流积云层地区,基于飞机的气溶胶光散射系数测量,直接或通过代理测量的云凝结核(CCN)以及气溶胶化学成分已连续三年报告。受体建模用于区分主要气溶胶源对光散射和CCN活性的贡献。人为来源对两个气候重要气溶胶参数(直接和间接强迫)的贡献逐年变化,但在CCN浓度情况下,平均为67%,在轻度条件下,平均为57%。散射系数。

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