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hydrogen chloride; remote sensing; solar occultation; Montreal Protocol; Jungfraujoch station; stratospheric composition; trend
Abstract :
[en] In this contribution, we analyze infrared solar observations recorded from the ground at the Jungfraujoch station and from space with the HALOE and the ACE-FTS instruments to derive time series of stratospheric columns of hydrogen chloride (HCl) at Northern mid-latitudes. We investigate the Jungfraujoch and the composite satellite time series to characterize the evolution of HCl over the last 15 years, i.e. after its peak loading which occurred in 1996 in this region of the Earth’s atmosphere. Trends derived from both data sets are compared and possible causes for the recent change in the stratospheric HCl buildup are evoked.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Mahieu, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Zander, Rodolphe ; Université de Liège - ULiège > Relations académiques et scientifiques (Sciences)
Bernath, Peter F.
Boone, Christopher D.
Walker, Kaley A.
Language :
English
Title :
Recent trend anomaly of hydrogen chloride (HCl) at northern mid-latitudes derived from Jungfraujoch, HALOE and ACE-FTS Infrared solar observations
Publication date :
2013
Main work title :
The Atmospheric Chemistry Experiment ACE at 10: A Solar Occultation Anthology
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