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Receptor and Hybrid Modeling Tools


  1. Ram Vedantham,
  2. Gary Norris,
  3. Rachelle Duvall

Published Online: 15 JAN 2013

DOI: 10.1002/9780470057339.var021.pub2

Encyclopedia of Environmetrics

Encyclopedia of Environmetrics

How to Cite

Vedantham, R., Norris, G. and Duvall, R. 2013. Receptor and Hybrid Modeling Tools . Encyclopedia of Environmetrics. 5.

Author Information

  1. US Environmental Protection Agency, Research Triangle Park, NC, USA

Publication History

  1. Published Online: 15 JAN 2013


Practical and economical plans to reduce air pollution require models that relate the sources of airborne pollution to concentrations at sampling sites. In receptor models, samples of airborne pollution are subjected to extensive chemical analysis. Contributing sources leave chemical fingerprints in the sample. The amount of pollution coming from each source can be estimated if the chemical fingerprints of the sources are known. Thus, receptor models do not require any knowledge of emission rates or meteorological observations that are very important to atmospheric dispersion models. However, receptor models do rely on the observed concentrations of chemical species in the atmosphere. These species must be conserved during transport between the source and the receptor. Chemical elements are good candidates for receptor modeling since these are often immutable under ordinary conditions and relatively easily measured.


  • receptor models;
  • hybrid model;
  • source apportionment;
  • sector apportionment