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Number Size Distributions of Submicron Particles in Europe

  • Ari AsmiEmail author
Chapter
Part of the The Handbook of Environmental Chemistry book series (HEC, volume 26)

Abstract

The aerosol particle number size distribution is a key component in aerosol indirect climate effects, and is also a key factor on potential nanoparticle health effects. This chapter will give background on particle number size distributions, their monitoring and on potential climate and health effects of submicron aerosol particles. The main interest is on the current variability and concentration levels in European background air.

The submicron particle number size distribution controls many of the main climate effects of submicron aerosol populations. The data from harmonized particle number size distribution measurements from European field monitoring stations are presented and discussed. The results give a comprehensive overview of the European near surface aerosol particle number concentrations and number size distributions between 30 and 500 nm of dry particle diameter. Spatial and temporal distributions of aerosols in the particle sizes most important for climate applications are presented. Annual, weekly, and diurnal cycles of the aerosol number concentrations are shown and discussed. Emphasis is placed on the usability of results within the aerosol modeling community and several key points of model-measurement comparison of submicron aerosol particles are discussed along with typical concentration levels around European background.

Keywords

Aerosol number concentration Aerosol number size distribution Atmospheric aerosols CCN 

Notes

Acknowledgments

The author wishes to thank Dr. A. Wiedensohler for the useful comments in the review. The extensive work of all scientists and technical staff maintaining and operating the stations and the instruments is gratefully acknowledged.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.University of HelsinkiHelsinkiFinland

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