ISSN:
1573-0662
Schlagwort(e):
Methyl chloride
;
vertical distribution
;
cryogenic sampling
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Geologie und Paläontologie
Notizen:
Abstract The vertical distribution of the CH3Cl mixing ratio in the stratosphere has been measured from samples collected during two balloon flights on the 21 October 1982 and 10 September 1983. Measurements were made with two analytical techniques that were also employed for previous analyses of stratospheric samples: gas chromatography (GC) and a gas chromatograph/mass spectrometer (GC/MS) combination. The results from all balloon flights performed to date are combined to derive an average experimental profile of CH3Cl at midlatitudes. The profile shows that the CH3Cl mixing ratio decreases by about one order of magnitude between 20 and 30 km altitude. A comparison of the new observations with model profiles reveals discrepancies in the lower stratosphere that amount to a factor of about 3. Possible causes for these discrepancies are discussed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00122524
Permalink
