Hygroscopic growth and cloud activation of pollen: a laboratory and modelling study
Hygroscopic growth and cloud activation of pollen: a laboratory and modelling study
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DOI：
10.1002/asl.397
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发表时间：
2012-10
影响因子：
3
通讯作者：
P. T. Griffiths;J.-S. Borlace;P. Gallimore;Markus Kalberer;Michael Herzog;Francis D. Pope
中科院分区：
文献类型：
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作者：
P. T. Griffiths;J.-S. Borlace;P. Gallimore;Markus Kalberer;Michael Herzog;Francis D. Pope
本文研究了花粉的吸湿生长。用电动天平测定花粉的吸水量，用环境扫描电子显微镜观察花粉对亚饱和湿度的响应。花粉具有中等吸湿性，在高湿度时其表面会起褶皱作用。吸湿性数据使用κ-Köhler理论进行参数化，并用于上升云模型中，以研究花粉对硫酸盐活化的影响。我们的数据表明，极端的花粉浓度（>1000 m−3）可能会干扰原始环境中背景硫酸盐气溶胶模式的激活。皇家气象学会
This study investigates the hygroscopic growth of pollen. An electrodynamic balance was used to measure the water uptake on pollen and an environmental scanning electron microscope was used to visualize the response of the pollen to subsaturated humidities. Pollen was found to be moderately hygroscopic and its surface wettable at high humidities. The hygroscopicity data were parameterized using κ‐Köhler theory and used in a rising parcel cloud model to investigate the effect of pollen on sulfate activation. Our data suggest that extreme pollen concentrations (>1000 m−3) may interfere with the activation of the background sulphate aerosol mode in pristine environments. Copyright © 2012 Royal Meteorological Society