Article (Scientific journals)
The 1985 chlorine and fluorine inventories in the stratosphere based on atmos observations at 30-degrees north latitude
Zander, Rodolphe; Gunson, Michael R.; Farmer, Crofton B. et al.
1992In Journal of Atmospheric Chemistry, 15 (2), p. 171-186
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Keywords :
BUDGETS OF CHLORINE AND FLUORINE; HALOGENATED GASES; SPECTROSCOPIC OBSERVATIONS; atmospheric composition; remote sensing; Montreal Protocol; ATMOS; stratosphere
Abstract :
[en] The set of high-resolution infrared solar observations made with the Atmospheric Trace Molecule Spectroscopy (ATMOS) - Fourier transform spectrometer from onboard Spacelab 3 (30 April-1 May 1985) has been used to evaluate the total budgets of the odd chlorine and fluorine chemical families in the stratosphere. These budgets are based on volume mixing ratio profiles measured for HCl, HF, CH3Cl, ClONO2, CCl4, CCl2F2, CCl3F, CHClF2, CF4, COF2, and SF6, near 30-degrees north latitude. When including realistic concentrations for species not measured by ATMOS, i.e., the source gases CH3CCl3, and C2F3Cl3 below 25 km, and the reservoirs ClO, HOCl and COFCl between 15 and 40 km (five gases actually measured by other techniques), the 30-degrees-N zonal 1985 mean total mixing ratio of chlorine, Cl, was found to be equal to (2.58 +/- 0.10) ppbv (parts per billion by volume) throughout the stratosphere, with no significant decrease near the stratopause. The results for total fluorine indicate a slight, but steady, decrease of its volume mixing ratio with increasing altitude, around a mean stratospheric value of (1.15 +/- 0.12) ppbv. Both uncertainties correspond to one standard deviation. These mean springtime 1985 stratospheric budgets are commensurate with values reported for the tropospheric Cl and F concentrations in the early 1980s, when allowance is made for the growth rates of their source gases at the ground and the time required for tropospheric air to be transported into the stratosphere. The results are discussed with emphasis on conservation of fluorine and chlorine and the partitioning among source, sink, and reservoir gases throughout the stratosphere.
Disciplines :
Environmental sciences & ecology
Earth sciences & physical geography
Author, co-author :
Zander, Rodolphe ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Gunson, Michael R.;  California Institute of Technology (Pasadena, U.S.A.) > Jet Propulsion Laboratory
Farmer, Crofton B.;  California Institute of Technology (Pasadena, U.S.A.) > Jet Propulsion Laboratory
Rinsland, Curtis P.;  NASA Langley Research Center (Virginia, USA)
Irion, F. W.;  California Institute of Technology( Pasadena, U.S.A.) > Department of Chemical Engineering
Mahieu, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Language :
English
Title :
The 1985 chlorine and fluorine inventories in the stratosphere based on atmos observations at 30-degrees north latitude
Publication date :
1992
Journal title :
Journal of Atmospheric Chemistry
ISSN :
0167-7764
eISSN :
1573-0662
Publisher :
Springer Science & Business Media B.V.
Volume :
15
Issue :
2
Pages :
171-186
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 December 2008

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