Reference : Measured and modelled trends of stratopsheric Cly and Fy column amounts in the northe...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/4659
Measured and modelled trends of stratopsheric Cly and Fy column amounts in the northern hemisphere
English
Ruhnke, Roland [ > > ]
Blumenstock, Thomas [ > > ]
Duchatelet, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Hamman, Katja [ > > ]
Hase, Frank [ > > ]
Kouker, Wolfgang [ > > ]
Kramer, Isabell [ > > ]
Mahieu, Emmanuel mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Mikuteit, Sabine [ > > ]
Notholt, Justus [ > > ]
Reddmann, Thomas [ > > ]
Schneider, Matthias [ > > ]
Sinnhuber, Björn-Martin [ > > ]
Sussmann, Ralf [ > > ]
Velazco, Voltaire [ > > ]
Warneke, Thorsten [ > > ]
Wiehle, Michael [ > > ]
Apr-2007
No
International
EGU 2007 General Assembly
du 15 au 20 avril 2007
Vienne
Autriche
[en] Reactive inorganic chlorine plays a crucial role in the stratospheric ozone depletion.
To stabilize and enable a recovering of the stratospheric ozone layer, the Montreal
protocol and its amendments and adjustments have been progressively implemented to
reduce or even stop the production and emission of important chlorinated source gases
(CFCs, HCFCs, CCl4, CH3CCl3, and Halons). As these source gases are photolysed in
the stratosphere into inorganic chlorine and fluorine, respectively, the turn over of the
inorganic chlorine (HCl and ClONO2) and slowing down of fluorine (HF and COF2)
reservoirs act as a verification of the effectiveness of these protocols.
Here we present results of long-term measurements of the stratospheric column of
HCl, ClONO2, and HF obtained at different stations in the northern hemisphere (Ny
Alesund, Kiruna, Zugspitze, Jungfraujoch, Izana, all affiliated to the NDACC, Network
for the Detection of Atmospheric Composition Change) within the PEP (Pole-
Equator-Pole) network. These time series are interpreted with model calculations performed
with a state of the art 2-D model and the 3-D CTM KASIMA with respect
to the determination of the slowing down or turn over, respectively. In addition, trend
parameters calculated using different approaches (e.g. linear trend, bootstrap-method)
will be presented and intercompared.
http://hdl.handle.net/2268/4659

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