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| Titel |
Mobile mapping of methane emissions and isoscapes |
| VerfasserIn |
Mounir Takriti, Sue Ward, Peter Wynn, Dafydd Elias, Niall McNamara |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250151653
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| Publikation (Nr.) |
 EGU/EGU2017-16397.pdf |
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| Zusammenfassung |
| Methane (CH4) is a potent greenhouse gas emitted from a variety of natural and
anthropogenic sources. It is crucial to accurately and efficiently detect CH4 emissions and
identify their sources to improve our understanding of changing emission patterns
as well as to identify ways to curtail their release into the atmosphere. However,
using established methods this can be challenging as well as time and resource
intensive due to the temporal and spatial heterogeneity of many sources. To address
this problem, we have developed a vehicle mounted mobile system that combines
high precision CH4 measurements with isotopic mapping and dual isotope source
characterisation. We here present details of the development and testing of a unique system
for the detection and isotopic analysis of CH4 plumes built around a Picarro isotopic
(13C/12C) gas analyser and a high precision Los Gatos greenhouse gas analyser.
Combined with micrometeorological measurements and a mechanism for collecting
discrete samples for high precision dual isotope (13C/12C, 2H/1H) analysis the system
enables mapping of concentrations as well as directional and isotope based source
verification.
We then present findings from our mobile methane surveys around the North West of
England. This area includes a variety of natural and anthropogenic methane sources within a
relatively small geographical area, including livestock farming, urban and industrial gas
infrastructure, landfills and waste water treatment facilities, and wetlands. We show that the
system was successfully able to locate leaks from natural gas infrastructure and emissions
from agricultural activities and to distinguish isotope signatures from these sources. |
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