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| Titel |
Pitfalls with the use of enhancement ratios or normalized excess mixing ratios measured in plumes to characterize pollution sources and aging |
| VerfasserIn |
R. J. Yokelson, M. O. Andreae, S. K. Akagi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 6, no. 8 ; Nr. 6, no. 8 (2013-08-28), S.2155-2158 |
| Datensatznummer |
250085045
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| Publikation (Nr.) |
 copernicus.org/amt-6-2155-2013.pdf |
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| Zusammenfassung |
| Normalized excess mixing ratios (NEMRs), also known as
enhancement ratios, are a common way to characterize plumes of pollution in
atmospheric research. As single-source pollutant plumes disperse in the
atmosphere, they are diluted by mixing with the adjacent background air.
Changes in the composition of this background air can cause large changes to
the NEMR that is subsequently measured by remote-sensing, airborne, or
ground-based instruments. This scenario is common when boundary layer plumes
enter the free troposphere and could also impact long-range transport or
plumes near the top of the troposphere. We provide a context for these
issues and an example showing that neglect of this effect could lead to
serious errors in data interpretation. |
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