120 likes | 311 Views
Cloud Condensation Nuclei Concentrations. Göran Frank, Duli Chand, Michael Welling, Pascal Guyon, Meinrat O. Andreae Max Planck Institute for Chemistry, Mainz, Germany. Cloud Condensation Nuclei (CCN). The ability of an aerosol particle to act as a CCN is determined by: Size
E N D
Cloud Condensation Nuclei Concentrations Göran Frank, Duli Chand, Michael Welling, Pascal Guyon, Meinrat O. Andreae Max Planck Institute for Chemistry, Mainz, Germany
Cloud Condensation Nuclei (CCN) The ability of an aerosol particle to act as a CCN is determined by: • Size • Chemical composition The cloud droplet size distribution formed is also depending on: • Number of aerosol particles • The maximum supersaturation achieved
CCN-Mainz Thermal gradient type INPE Aircraft Fazenda Nossa Senhora CCN-Hannover Expansion type Fazenda Nossa Senhora Instrumentation
Laser Thermal gradient parallel plate type CCN counter (CCN-Mainz)
CCN Hannover Fazenda Nossa Senhora • Data available for the period September 16 – November 14.
Work to be done • Continue data evaluation • Quality validation • CCN/CN ratios • Link aerosol particle size distribution, aerosol chemical properties and hygroscopic properties of aerosol particles to cloud-nucleating properties, including CCN concentrations and CCN/CN ratios (WP 3)