Article (Scientific journals)
On the temporal increase of tropospheric CH4
Ehhalt, D. H.; Zander, Rodolphe; Lamontagne, R. A.
1983In Journal of Geophysical Research, 88 (C13), p. 8442-8446
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Keywords :
Geochemistry: Chemistry of the atmosphere; Meteorology: Chemical composition and chemical interactions
Abstract :
[en] The available data on the tropospheric CH4 mixing ratio in the northern hemisphere are examined for a possible trend, with the following result: There was no or little increase between 1948 and 1965 as evidenced by IR measurements of the atmospheric CH4 column density. Between 1965 and 1975 there appears a weak increase in tropospheric CH4 at an average rate of about 0.5%/yr, as suggested by independent sets of CH4 measurements. Between 1978 and 1980 a CH4 increase of 1 to 2%/yr has been observed by several laboratories. The overall trend resulting for the past 30 years is subject to a fair amount of uncertainty.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Ehhalt, D. H.
Zander, Rodolphe ;  Université de Liège - ULiège
Lamontagne, R. A.
Language :
English
Title :
On the temporal increase of tropospheric CH4
Publication date :
1983
Journal title :
Journal of Geophysical Research
ISSN :
0148-0227
eISSN :
2156-2202
Publisher :
Wiley
Volume :
88
Issue :
C13
Pages :
8442-8446
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 October 2015

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