While the importance of supermicron particles on human health and climate is well recognized, knowledge of their size‐related properties remains elusive. Many routine near‐surface in situ measurements of aerosol properties include size spectra of submicron particles and aerosol total scattering coefficient at three visible wavelengths and two size cutoffs. These properties are collected, for example, at the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) user facility. Our study illustrates how these conventional measurements can be used to predict total particle volume (particle size <10 μm). The well‐known fact that small and large particles scatter sunlight very differently forms the basis of a new method. Our study demonstrates a good agreement between estimated and measured total volumes for five climate‐important locations. The agreement suggests that the new method can be used to predict the total particle volume from the routine data collected at numerous sites around the world.

中文翻译：

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从波长和尺寸分辨的散射系数数据估算气溶胶总体积：一种新方法

尽管超微粒子对人类健康和气候的重要性已得到公认，但有关其尺寸相关特性的知识仍然难以捉摸。许多常规的近地面气溶胶特性原位测量包括亚微米颗粒的尺寸光谱和在三个可见波长和两个尺寸截止值处的气溶胶总散射系数。例如，这些属性是在美国能源部的大气辐射测量（ARM）用户设施中收集的。我们的研究说明了如何使用这些常规测量方法来预测总颗粒体积（粒径<10μm）。众所周知，小颗粒和大颗粒会散射阳光，这构成了新方法的基础。我们的研究表明，在五个重要气候地区的估计总量与实测总量之间有着良好的一致性。该协议表明，该新方法可用于根据世界各地众多站点收集的常规数据预测总颗粒量。