World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

On the Contribution of Aitken Mode Particles to Cloud Droplet Populations at Continental Background Areas – a Parametric Sensitivity Study : Volume 7, Issue 3 (08/05/2007)

By Anttila, T.

Click here to view

Book Id: WPLBN0003997976
Format Type: PDF Article :
File Size: Pages 36
Reproduction Date: 2015

Title: On the Contribution of Aitken Mode Particles to Cloud Droplet Populations at Continental Background Areas – a Parametric Sensitivity Study : Volume 7, Issue 3 (08/05/2007)  
Author: Anttila, T.
Volume: Vol. 7, Issue 3
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Kerminen, V., & Anttila, T. (2007). On the Contribution of Aitken Mode Particles to Cloud Droplet Populations at Continental Background Areas – a Parametric Sensitivity Study : Volume 7, Issue 3 (08/05/2007). Retrieved from

Description: Finnish Meteorological Institute, Research and Development, P.O. Box 503, 00101 Finland. Aitken mode particles are potentially an important source of cloud droplets in continental background areas. In order to find out which physico-chemical properties of Aitken mode particles are most important regarding their cloud-nucleating ability, we applied a global sensitivity method to an adiabatic air parcel model simulating the number of cloud droplets formed on Aitken mode particles, CD2. The technique propagates uncertainties in the parameters describing the properties of Aitken mode to CD2. The results show that if the Aitken mode particles do not contain molecules that are able to reduce the particle surface tension more than 30% and/or decrease the mass accommodation coefficient of water, Α, below 10−2, the chemical composition and modal properties may have roughly an equal importance at low updraft velocities characterized by maximum supersaturations <0.1%. For larger updraft velocities, however, the particle size distribution is clearly more important than the chemical composition. In general, CD2 exhibits largest sensitivity to the particle number concentration, followed by the particle size. Also the shape of the particle mode, characterized by the geometric standard deviation (GSD), can be as important as the mode mean size at low updraft velocities. Finally, the performed sensitivity analysis revealed also that the chemistry may dominate the total sensitivity of CD2 to the considered parameters if: 1) the value of Α varies at least one order of magnitude more than what is expected for pure water surfaces (10−2–1), or 2) the particle surface tension varies more than roughly 30% under conditions close to reaching supersaturation.

On the contribution of Aitken mode particles to cloud droplet populations at continental background areas – a parametric sensitivity study

Chuang, P. Y.: Sensitivity of cloud condensation nuclei activation processes to kinetic parameters, J. Geophys. Res., 111, D09201, doi:10.1029/2005JD006529, 2006.; Cantrell, W., Shaw, G., and Benner, R.: Cloud properties inferred from bimodal number distributions, J. Geophys. Res., 104, 27 615–27 624, 1999.; Chuang, P. Y.: Measurement of the timescale of hygroscopic growth for atmospheric aerosols, J. Geophys. Res. 108, 4282, doi:10.1029/2002JD002757, 2003.; Anttila, T. and Kerminen, V.-M.: Influence of organic compounds on cloud droplet activation – a model investigation considering the volatility, water-solubility and surface activity of organic matter, J. Geophys. Res. 107, 4662, doi:10.1029/2001JD001482, 2002.; Asa-Awuku, A. and Nenes, A.: The Effect of Solute Dissolution Kinetics on Cloud Droplet Formation: 1. Extended Köhler theory, J. Geophys. Res.-Atmos., accepted, 2006.; Calbó, J., Pan, W., Webster, M., Prinn, R., and McRae, G.: Parameterization of Urban Sub-Grid Scale Processes in Global Atmospheric Chemistry Models, J. Geophys. Res., 103, 3437–3452, 1998.; Dinar, E., Taraniuk, I., Graber, E., Katsman, S., Moise, T., Anttila, T., Mentel, T., and Rudich, Y.: Cloud Condensation Nuclei properties of model and atmospheric HULIS, Atmos. Chem. Phys., 6, 2465–2482, 2006.; Dusek, U., Frank, G. P., Hildebrandt, L., Curtius, J., Schneider, J., Walter, S., Chand, D., Drewnick, F., Hings, S., Jung, D., Borrmann, S., and Andreae, M. O.: Size matters more than chemistry for cloud-nucleating ability of aerosol particles, Science, 312, 1375–1378, 2006.; Ehn, M., Petäjä, T., Aufmhoff, H., Aalto, P., Hämeri, K., Arnold, F., Laaksonen, A., and Kulmala, M.: Hygroscopic properties of ultrafine aerosol particles in the boreal forest: diurnal variation, solubility and the influence of sulfuric acid, Atmos. Chem. Phys., 7, 211–222, 2007.; Ervens, B., Feingold, G., and Kreidenweis, S. M.: Influence of water-soluble organic carbon on cloud drop number concentration, J. Geophys. Res., 110, D18211, doi:10.1029/2004JD005634, 2005.; Ervens, B., Cubison, M., Andrews, E., Feingold, G., Ogren, J.A., Jimenez, J.L., DeCarlo, P., and Nenes, A.: Prediction of cloud condensation nucleus number concentration using measurements of aerosol size distributions and composition and light scattering enhancement due to humidity, J. Geophys. Res., 112, D10S32, doi:10.1029/2006JD007426, 2007.; Facchini, M. C., Decesari, S., Mircea, M., Fuzzi, S., and Loglio, G.: Surface tension of atmospheric wet aerosol and cloud/fog droplets in relation to their organic carbon content and chemical composition, Atmos. Environ., 34, 4853–4857, 2000.; Feingold, G.: Modeling of the first indirect effect: Analysis of measurement requirements, Geophys. Res. Lett., 30, 1997, doi:10.1029/2003GL017967, 1997.; Graber, E. R. and Rudich, Y.: Atmospheric HULIS: How humic-like are they? A comprehensive and critical review, Atmos. Chem. Phys., 6, 729–753, 2006.; Henning, S., Rosenørn, T., D'Anna, B., Gola, A. A., Svenningsson, B., and Bilde, M.: Cloud droplet activation and surface tension of mixtures of slightly soluble organics and inorganic salt, Atmos. Chem. Phys., 5, 575–582, 2005.; Hyvärinen, A.-P., Lihavainen, H., Gaman, A., Vairila, L., Ojala, H., Kulmala, M., and Viisanen, Y.: Surface tensions and densities of oxalic, malonic, succinic, maleic, malic, and cis-pinonic acids, J. Chem. Eng. Data, 51, 255, 2006.; Isukapalli, S. S.: Uncertainty analysis of transport-transformation models. PhD Thesis, New Brunswick Rutgers, New Jersey State University. New Brunswick, New Jersey, United States of America, 1999.; Kerminen, V.-M., Lihavainen, H., Komppula, M., Viisanen, Y., and Kulmala, M.: Direct observational evidence linking atmospheric aerosol formation and cloud droplet activation, Geophys. Res. Lett., 32, L14803, doi:10.1029/2005GL023130, 2005.; Kiss, G., Tombacz, E., and Hansson, H.-C.: Surface ten


Click To View

Additional Books

  • Consistent Response of Indian Summer Mon... (by )
  • Numerical Simulations of Homogeneous Fre... (by )
  • Evidence for Long-lived Polar Vortex Air... (by )
  • Simultaneous Aerosol Measurements of Unu... (by )
  • The Role of Ice in N2O5 Heterogeneous Hy... (by )
  • Non-linearity in Dms Aerosol-cloud-clima... (by )
  • Unexpected High Yields of Carbonyl and P... (by )
  • Seasonal Features of Ultrafine Particle ... (by )
  • Secondary Maxima in Ozone Profiles : Vol... (by )
  • Nasa Larc Airborne High Spectral Resolut... (by )
  • Volatility of Organic Aerosol and Its Co... (by )
  • Sciamachy Formaldehyde Observations: Con... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.