Carbon isotopic signature of coal-derived methane emissions to the atmosphere: from coalification to alteration
Item
Title (Dublin Core)
Carbon isotopic signature of coal-derived methane emissions to the atmosphere:
from coalification to alteration
from coalification to alteration
Description (Dublin Core)
Currently, the atmospheric methane burden is rising rapidly, but the extent to which shifts in coal production contribute to this rise is not known. Coalbed methane emissions into the atmosphere are poorly characterised, and this study provides representative <i>δ</i><sup>13</sup>C<sub>CH<sub>4</sub></sub> signatures of methane emissions from specific coalfields. Integrated methane emissions from both underground and opencast coal mines in the UK, Australia and Poland were sampled and isotopically characterised. Progression in coal rank and secondary biogenic production of methane due to incursion of water are suggested as the processes affecting the isotopic composition of coal-derived methane. An averaged value of −65 ‰ has been assigned to bituminous coal exploited in open cast mines and of −55 ‰ in deep mines, whereas values of −40 and −30 ‰ can be allocated to anthracite opencast and deep mines respectively. However, the isotopic signatures that are included in global atmospheric modelling of coal emissions should be region- or nation-specific, as greater detail is needed, given the wide global variation in coal type.
Creator (Dublin Core)
Zazzeri, Giulia
Lowry, Dave
Fisher, Rebecca E.
France, James L.
Lanoisellé, Mathias
Kelly, Bryce F. J.
Necki, Jaroslaw M.
Iverach, Charlotte P.
Ginty, Elisa
Zimnoch, Miroslaw
Jasek, Alina
Nisbet, Euan G.
Date (Dublin Core)
2018-09-17
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-16-13669-2016
https://acp.copernicus.org/articles/16/13669/2016/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
