Schmücke hill cap cloud and valley stations aerosol characterisation during FEBUKO (I): Particle size distribution, mass, and main components
Schmücke hill cap cloud and valley stations aerosol characterisation during FEBUKO (I): Particle size distribution, mass, and main components
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DOI：
10.1016/j.atmosenv.2005.02.013
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发表时间：
2005-07
影响因子：
5
通讯作者：
E. Brüggemann;T. Gnauk;S. Mertes;K. Acker;R. Auel;W. Wieprecht;D. Möller;J. Collett;H. Chang;D. Galgon;R. Chemnitzer;C. Rüd;R. Junek;W. Wiedensohler;H. Herrmann
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文献类型：
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作者：
E. Brüggemann;T. Gnauk;S. Mertes;K. Acker;R. Auel;W. Wieprecht;D. Möller;J. Collett;H. Chang;D. Galgon;R. Chemnitzer;C. Rüd;R. Junek;W. Wiedensohler;H. Herrmann
2001年和2002年秋季在图林根森林（德国）进行了山顶云场试验。气相痕量化合物测定在上风，首脑会议，和下风的网站和主要颗粒成分在上风和下风的网站。云水和总云成分（下降残留物和间隙粒子）确定在首脑会议的网站。三个事件符合在连接流上风-峰顶-下风站点期间定义的最佳条件的标准，并对这些事件进行了进一步的详细分析。在上风向和下风向的站点，云水成分与粒子浓度进行了比较。云水中的非挥发性组分的浓度被发现是在逆风站点与相应的颗粒相浓度的良好协议。顺风站点颗粒成分的非挥发性化合物的浓度低于云水表明在运输过程中的损失，如沉积。挥发性成分的浓度被认为是较高的云水比颗粒相浓度在上风和下风的网站样本可能是由于从撞击采样技术的损失，以及运输损失。云过程的气溶胶成分的变化的迹象，发现从有限的案例。在最小粒径范围内（PM 0. 5），从上风到下风位置的硫酸盐和铵浓度升高。05-0.14）分别在事件I（20%和17%）和事件III（70%和150%）期间发现。在PM 0. 14-0.42，观察到事件I的OC增加约20%。考虑到组分对单一尺寸范围质量的相对贡献（避免物理汇过程），可以观察到硫酸盐，硝酸盐，铵，OC和EC的相对较高的增加。在某些情况下，气溶胶质量增加的迹象可以从气溶胶数量和体积大小分布中得出。复杂多相模型（SPACCIM）的结果一致，显示在某些情况下某些化合物的浓度增加。r 2005爱思唯尔有限公司。保留所有权利。
Hill cap cloud field experiments were performed during autumn 2001 and 2002 in the Thuringer Wald (Germany). Gas phase trace compounds were determined at an upwind, summit, and downwind sites and major particulate components at an upwind and downwind site. Cloud water and total cloud components (drop residuals and interstitial particles) were determined at a summit site. Three events were fulfilling the criteria for the best conditions defined by during a connected flow upwind–summit–downwind sites and further detailed analysis was performed on these events. Cloud water components were compared with particle concentration at upwind and downwind site. The concentrations of non-volatile components in cloud water were found to be in good agreement with corresponding particle phase concentrations at the upwind site. Downwind site particulate component concentrations of non-volatile compounds were lower than in cloud water indicating loss processes during transport such as deposition. The concentrations of volatile components were found to be higher in cloud water than in the particle phase concentrations at up-and downwind site samples probably due to a loss from impactor sampling technique as well as a transport loss. Indications for changes of aerosol composition by cloud processes were found from a limited number of cases. Elevated sulphate and ammonium concentrations from upwind to downwind site in the smallest particle size range (PM0. 05–0.14) were found during event I (20% and 17%) and event III (70% and 150%), respectively. In the particle size range of PM0. 14–0.42 an increase of OC by about 20% for event I was observed. Considering the relative contributions of components to the single size range mass (avoiding physical sink processes), comparatively higher increases for sulphate, nitrate, ammonium, OC, and EC could be observed. Indications of an increase of aerosol mass can be derived in some cases from the aerosol number and volume size distributions. Results from a complex multiphase model (SPACCIM) are consistent showing an increase in concentrations of some compounds for some cases. r 2005 Elsevier Ltd. All rights reserved.