ORBi: Mahieu Emmanuel - The evolution of inorganic chlorine above the Jungfraujoch station: an update.

Reference : The evolution of inorganic chlorine above the Jungfraujoch station: an update.


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
	To cite this reference:	http://hdl.handle.net/2268/101160

Title :	The evolution of inorganic chlorine above the Jungfraujoch station: an update.
Language :	English
Author, co-author :	Mahieu, Emmanuel [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
	Duchatelet, Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
	Zander, Rodolphe [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
	Demoulin, Philippe [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
	Servais, Christian [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
	Rinsland, C. P. [> >]
	Chipperfield, M. P. [> >]
	De Mazière, M. [> >]
Publication date :	2004
Main document title :	Proceedings of the 20th Quadrennial Ozone Symposium
Editor :	Zerefos, C. S.
Collection and collection volume :	Vol 2
Pages :	997-998.
On invitation :	Yes
Audience :	International
ISBN :	ISBN 960-630-103-6
Event name :	20th Quadrennial Ozone Symposium
Event date :	1-8 June 2004
Event place (city) :	Kos
Event country :	Greece
Keywords :	[en] inorganic chlorine ; Jungfraujoch ; FTIR spectroscopy
Abstract :	[en] Within the frame of the NDSC, the total vertical column abundances of HCl and ClONO2, by far the two most important inorganic chlorine reservoirs at northern mid-latitudes, have been further monitored above the Jungfraujoch station (Swiss Alps, 46.5ºN, 8.0ºE, 3580m a.s.l.), by analyzing infrared solar absorption spectra recorded with very high-resolution Fourier spectrometers. The mean temporal evolution of the sum of their monthly mean abundance time series indicates that the total stratospheric inorganic chlorine loading (Cly) has decreased slowly (-0.7+/-0.3%/yr, 1-sigma) since it peaked in late 1996, at the limit of being statistically significant at the 2-sigma level. Comparison with model calculations and with the evolution of surface total organic chlorine will also be discussed.
Research units :	GIRPAS
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/101160

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