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| Hauptseite > Workflowsammlungen > Öffentliche Einträge > Vortex-wide chlorine activation by a mesosclae PSC event in the Arctic winter of 2009/10 > print |
| Hauptseite > Workflowsammlungen > Öffentliche Einträge > Vortex-wide chlorine activation by a mesosclae PSC event in the Arctic winter of 2009/10 > print |
| 001 | 278675 | ||
| 005 | 20240712100847.0 | ||
| 024 | 7 | _ | |a 10.5194/acpd-15-33731-2015 |2 doi |
| 024 | 7 | _ | |a 2128/9505 |2 Handle |
| 037 | _ | _ | |a FZJ-2015-07000 |
| 082 | _ | _ | |a 550 |
| 100 | 1 | _ | |a Wegner, Tobias |0 P:(DE-Juel1)129168 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Vortex-wide chlorine activation by a mesosclae PSC event in the Arctic winter of 2009/10 |
| 260 | _ | _ | |a Katlenburg-Lindau |c 2015 |b EGU |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1449124521_15333 |2 PUB:(DE-HGF) |
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| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
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| 336 | 7 | _ | |a article |2 DRIVER |
| 520 | _ | _ | |a In the Arctic polar vortex of the 2009/10 winter temperatures were low enough to allow widespread formation of Polar Stratospheric Clouds (PSC). These clouds occurred during the initial chlorine activation phase which provided the opportunity to investigate the impact of PSCs on chlorine activation. Satellite observations of gas-phase species and PSCs are used in combination with trajectory modeling to assess this initial activation. The initial activation occurred in association with the formation of PSCs over the east coast of Greenland at the beginning of January 2010. Although this area of PSCs covered only a small portion of the vortex, it was responsible for almost the entire initial activation of chlorine vortex wide. Observations show HCl mixing ratios decreased rapidly in and downstream of this region. Trajectory calculations and simplified heterogeneous chemistry modeling confirmed that the initial chlorine activation continued until ClONO2 was completely depleted and the activated air masses were advected throughout the polar vortex. For the calculation of heterogeneous reaction rates, surface area density is estimated from backscatter observations. Modeled heterogeneous reaction rates along trajectories intersecting with the PSC indicate that the initial phase of chlorine activation occurred in just a few hours. These calculations also indicate that chlorine activation on the binary background aerosol is significantly slower than on the PSCs and the observed chlorine activation can only be explained by an increase in surface area density due to PSCs. Furthermore, there is a strong correlation between the magnitude of the observed HCl depletion and PSC surface area. |
| 536 | _ | _ | |a 244 - Composition and dynamics of the upper troposphere and middle atmosphere (POF3-244) |0 G:(DE-HGF)POF3-244 |c POF3-244 |f POF III |x 0 |
| 700 | 1 | _ | |a Pitts, M. C. |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Poole, L. R. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Tritscher, Ines |0 P:(DE-Juel1)159462 |b 3 |u fzj |
| 700 | 1 | _ | |a Grooss, Jens-Uwe |0 P:(DE-Juel1)129122 |b 4 |u fzj |
| 700 | 1 | _ | |a Nakajima, H. |0 P:(DE-HGF)0 |b 5 |
| 773 | _ | _ | |a 10.5194/acpd-15-33731-2015 |0 PERI:(DE-600)2069857-4 |p 33731-33754 |t Atmospheric chemistry and physics / Discussions |v 15 |y 2015 |x 1680-7367 |
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