On the efficiency of nucleation scavenging

Jørgen B. Jensen; Robert J. Charlson

doi:10.3402/tellusb.v36i5.14917

On the efficiency of nucleation scavenging

Tellus B: Chemical and Physical Meteorology

Volume 36 (1984): Issue 5

By: Jørgen B. Jensen and Robert J. Charlson

Open Access

|Jan 1984

Abstract

The activation process near cloud base for submicrometer, soluble atmospheric aerosols is described and special attention is focused on the fraction, ε, of the total aerosol mass concentration that form cloud droplets. The variation of ε with updraft speed for various aerosol size distributions is calculated by means of an adiabatic, one-dimensional Lagrangian cloud model. Calculations are made for aerosol particles consisting of pure ammonium bisulphate, (NH₄)HSO₄ and the results show that for a clean continental background aerosol population, ε should be very near unity for all updraft speeds. For an average urban aerosol population, ε is close to unity for convective clouds. but for stratiform cases ε decreases rapidly as the updraft velocity is lowered.

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Articles in this issue

DOI: https://doi.org/10.3402/tellusb.v36i5.14917 | Journal eISSN: 1600-0889

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Language: English

Page range: 367 - 375

Submitted on: Sep 5, 1983

Accepted on: Jun 18, 1984

Published on: Jan 1, 1984

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1984 Jørgen B. Jensen, Robert J. Charlson, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 36 (1984): Issue 5