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Salsa – a Sectional Aerosol Module for Large Scale Applications : Volume 8, Issue 9 (08/05/2008)

By Kokkola, H.

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Book Id: WPLBN0003985625
Format Type: PDF Article :
File Size: Pages 15
Reproduction Date: 2015

Title: Salsa – a Sectional Aerosol Module for Large Scale Applications : Volume 8, Issue 9 (08/05/2008)  
Author: Kokkola, H.
Volume: Vol. 8, Issue 9
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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J. Lehtine, K. E., Anttila, T., Kulmala, M., Korhonen, H., Kokkola, H., Makkonen, R.,...Asmi, A. (2008). Salsa – a Sectional Aerosol Module for Large Scale Applications : Volume 8, Issue 9 (08/05/2008). Retrieved from

Description: Finnish Meteorological Institute, Kuopio Unit, P.O.Box 1627, FI-70211 Kuopio, Finland. The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used multiple methods to reduce the computational burden of different aerosol processes to optimize the model performance without losing physical features relevant to problematics of climate importance. The optimizations include limiting the chemical compounds and physical processes available in different size sections of aerosol particles; division of the size distribution into size sections using size sections of variable width depending on the sensitivity of microphysical processing to the particles sizes; the total amount of size sections to describe the size distribution is kept to the minimum; furthermore, only the relevant microphysical processes affecting each size section are calculated. The ability of the module to describe different microphysical processes was evaluated against explicit microphysical models and several microphysical models used in air quality models. The results from the current module show good consistency when compared to more explicit models. Also, the module was used to simulate a new particle formation event typical in highly polluted conditions with comparable results to more explicit model setup.

SALSA – a Sectional Aerosol module for Large Scale Applications

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