利用单颗粒黑碳光度计(SP2)估计黑碳气溶胶coat和rBC的大小:
1.基于leading-edge-only(LEO) fitting方法计算整个粒子(Dp=Dc+coat)的散射强度,与根据裸露黑碳粒径(Dc)计算的散射系数之比;
Esca.png
2.基于LEO fitting和MIE散射理论(假设黑碳为核壳模型)得到Dp粒径,Dp/Dc。
Dp/Dc.png
参考文献:Liu, D., et al. (2019). "Contrasting physical properties of black carbon in urban Beijing between winter and summer." Atmospheric Chemistry and Physics 19(10): 6749-6769.
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