Document Type
Article
Publication Date
4-8-2009
Department
Department of Geological and Mining Engineering and Sciences; Department of Civil, Environmental, and Geospatial Engineering
Abstract
Lagrangian particle dispersion models (LPDMs) are powerful and popular tools used for the analysis of atmospheric trace gas measurements. However, it can be difficult to determine the transport pathway of emissions from their source to a receptor using the standard gridded model output, particularly during complex meteorological scenarios. In this paper we present a method to clearly and easily identify the pathway taken by only those emissions that arrive at a receptor at a particular time, by combining the standard gridded output from forward (e.g., concentration) and backward (e.g., residence time) LPDM simulations. By comparing the pathway determined from this method with particle trajectories from both the forward and backward models, we show that this method successfully restores much of the Lagrangian information that is lost when the data are gridded. A sample analysis is presented, demonstrating that the sourceto-receptor pathway determined from this method is more accurate and easier to use than existing methods using standard LPDM products (gridded fields of, e.g., concentrations and residence time). As demonstrated in an evaluation and an example application, the method requires agreement between the transport described by the forward and backward simulations and thus provides a means to assess the quality and reversibility of the simulation. Finally, we discuss the potential for combining the backward LPDM simulation with gridded data from other sources (e.g., chemical transport models) to obtain a Lagrangian sampling of the air that will eventually arrive at a receptor. Based on the advantages presented here, this new method can complement or even replace many of the standard uses of backward LPDM simulations.
Publication Title
Atmospheric Chemistry and Physics
Recommended Citation
Owen, R. C.,
&
Honrath, R.
(2009).
Technical note: a new method for the Lagrangian tracking of pollution plumes from source to receptor using gridded model output.
Atmospheric Chemistry and Physics,
9(7), 2577-2595.
http://doi.org/10.5194/acp-9-2577-2009
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/3176
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Version
Publisher's PDF
Included in
Civil and Environmental Engineering Commons, Geological Engineering Commons, Mining Engineering Commons
Publisher's Statement
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License. Publisher’s version of record: https://doi.org/10.5194/acp-9-2577-2009