EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Herzog et al. 2004
Herzog, M., Weisenstein, D.K. and Penner, J.E. (2004). A dynamic aerosol module for global chemical transport models: Model description. Journal of Geophysical Research 109: doi: 10.1029/2003JD004405. issn: 0148-0227.

We have developed a dynamic aerosol model that is capable of treating the binary nucleation of sulfate gas and its condensation to form aerosol particles. Coagulation among sulfate particles and of sulfate particles with nonsulfate particles is also treated. The model is built in a modular fashion that allows its easy incorporation into a global chemical transport model. The model uses the method of modes and moments to describe the aerosol size distribution, with an arbitrary number of modes possible. The parameterizations in the model are valid for tropospheric as well as stratospheric conditions. No operator splitting or fixed time steps are applied so that all aerosol processes are allowed to fully interact with each other during each time step. Here we examine the predictions of the model in comparison to a sectional model for a suite of test cases chosen to represent the range of possibilities in a global CTM. We show that the predictions for both number and surface area are within a factor of 1.2 of the sectional model for the four mode version of the model and are only slightly degraded if only two modes are specified. The prediction of the number of accumulation mode particles is within a factor of 2.1 of that from the sectional model within the boundary layer.

BACKGROUND DATA FILES

Abstract

Keywords
Atmospheric Composition and Structure, Aerosols and particles (0345, 4801), Atmospheric Composition and Structure, Pollution—urban and regional, Atmospheric Composition and Structure, Troposphere—composition and chemistry, Atmospheric Composition and Structure, Cloud physics and chemistry, Global Change, Atmosphere (0315, 0325), aerosol dynamics, aerosol size distribution, aerosol number concentration
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit