The co-condensation of semi-volatile organics into multiple aerosol particle modes
The co-condensation of semi-volatile organics into multiple aerosol particle modes
复制标题
半挥发性有机物共凝结成多种气溶胶颗粒模式
DOI：
10.5194/gmd-2015-187
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
G. Mcfiggans
中科院分区：
文献类型：
--
作者：
Matthew Crooks;P. Connolly;D. Topping;G. Mcfiggans
抽象的。扩展了现有的计算混合气溶胶中多种半挥发性有机物的平衡气体/颗粒浓度的平衡分配模型，以考虑不同尺寸和化学组成的多种核心气溶胶模式。在气溶胶问题中，分配系数决定了气溶胶上处于凝聚相的半挥发性物质总浓度的比例。这项工作修改了多个5个多分散气溶胶模式的这一定义，以考虑多个浓缩浓度；每个核心气溶胶模式的每个半挥发物一个。这项工作的关键假设是，每种气溶胶模式都包含一个不完全挥发的核心组分，从而克服了较小粒子完全蒸发，然后凝聚到较大粒子上，在平衡状态下产生单分散气溶胶的潜在问题。所得到的耦合非线性系统由一组更简单的方程来近似，其中分配系数中的有机摩尔分数被设置为在所有模式中都是相同的。通过摄动关于这个近似解的凝聚质量，得到了一个修正项，该修正项解释了大部分去除的复杂性。这种方法在不显著损失精度的情况下大大提高了计算效率，从而使其纳入大规模模型是可行的。15个
Abstract. An existing equilibrium partitioning model for calculating the equilibrium gas/particle concentrations of multiple semi-volatile organics within a bulk aerosol is extended to allow for multiple core aerosol modes of different sizes and chemical compositions. In the bulk aerosol problem the partitioning coefficient determines the fraction of the total concentration of semi-volatile material that is in the condensed phase on the aerosol. This work modifies this definition for multiple 5 polydisperse aerosol modes to account for multiple condensed concentrations; one for each semivolatile on each core aerosol mode. The pivotal assumption in this work is that each aerosol mode contains a core constituent which is involatile thus overcoming the potential problem of smaller particles evaporating completely and then condensing on the larger particles to create a monodisperse aerosol at equilibrium. The resulting coupled non-linear system is approximated by a simpler set 10 of equations in which the organic mole fraction in the partitioning coefficient is set to be the same across all modes. By perturbing the condensed masses about this approximate solution a correction term is derived which accounts for much of the removed complexities. This method offers a greatly increased efficiency in calculating the solution without significant loss in accuracy, thus allowing its inclusion into large scale models feasable. 15
云滴激活的参数化，包括半挥发性有机物的影响
影响因子：
6.3
作者：
Connolly P
通讯作者：
Connolly P
影响因子：
18.3
作者：
Topping, David;Connolly, Paul;McFiggans, Gordon
通讯作者：
McFiggans, Gordon
半挥发性有机物共凝结成多种气溶胶颗粒模式的参数化
DOI：
10.5194/gmd-2017-123
发表时间：
2017
期刊：
--
影响因子：
--
作者：
Crooks M
通讯作者：
Crooks M