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| Titel |
Design and application of a mobile ground-based observatory for continuous measurements of atmospheric trace gas and criteria pollutant species |
| VerfasserIn |
S. E. Bush, F. M. Hopkins, J. T. Randerson, C.-T. Lai, J. R. Ehleringer |
| 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 ; 8, no. 8 ; Nr. 8, no. 8 (2015-08-26), S.3481-3492 |
| Datensatznummer |
250116544
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| Publikation (Nr.) |
 copernicus.org/amt-8-3481-2015.pdf |
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| Zusammenfassung |
| Ground-based measurements of atmospheric trace gas species and criteria
pollutants are essential for understanding emissions dynamics across space
and time. Gas composition in the lower 50 m of the atmosphere has the
greatest direct impacts on human health as well as ecosystem processes;
hence data at this level are necessary for addressing carbon-cycle- and
public-health-related questions. However, such surface data are generally
associated with stationary measurement towers, where spatial representation
is limited due to the high cost of establishing and maintaining an extensive
network of measurement stations. We describe here a compact mobile
laboratory equipped to provide high-precision, high-frequency, continuous,
on-road synchronous measurements of CO2, CO, CH4, H2O,
NOx, O3, aerosol, meteorological, and geospatial position data.
The mobile laboratory has been deployed across the western USA. In addition
to describing the vehicle and its capacity, we present data that illustrate
the use of the laboratory as a powerful tool for investigating the spatial
structure of urban trace gas emissions and criteria pollutants at spatial
scales ranging from single streets to whole ecosystem and regional scales.
We assess the magnitude of known point sources of CH4 and also identify
fugitive urban CH4 emissions. We illustrate how such a mobile
laboratory can be used to better understand emissions dynamics and quantify
emissions ratios associated with trace gas emissions from wildfire
incidents. Lastly, we discuss additional mobile laboratory applications in
health and urban metabolism. |
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