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The subject of the session will be the chemistry and the physics of short lived climate forcers (SLCF; black carbon, methane and ozone) in the Arctic atmosphere. The chemistry and physics of these species have been intensely studied at lower latitudes but in the Arctic their dynamics are still connected with large knowledge gaps and uncertainty due to the special Arctic conditions. Polar night represent one extreme condition with 24 hour darkness during polar winter leading to a very stratified troposphere and no photochemistry. Thereafter it is followed by another extreme situation with 24 hour-sunlight during polar summer. During this period special surface processes occur, where those related to halogen chemistry are most notable.
In the present session scientist are invited to submit their newest knowledge on SLCFs in the Arctic atmosphere.

Convener: Henrik Skov | Co-Convener: Hans-Christen Hansson
| Mon, 09 Sep, 16:30–18:00|Glass Hall
| Attendance Tue, 10 Sep, 10:00–11:00 | Display Mon, 09 Sep, 09:30–Wed, 11 Sep, 12:30|Sports Hall

Monday, 9 September 2019 | Glass Hall

Chairperson: 16903
Chairperson: 16903
17:00–17:15 |
Daniel Thomas, Henrik Skov, David Beddows, Manuel Dall'Osto, Marco Zanatta, and Andreas Massling
Chairperson: 16903
17:15–17:30 |
Ulas Im, Kostas Tsigaridis, Jesper H. Christensen, Kaj M. Hansen, Jacob K. Nøjgaard, Andreas Massling, and Henrik Skov
Chairperson: 16903
17:30–17:45 |
Dominic Heslin-Rees, María A. Burgos, Peter Tunved, Radovan Krejci, Hans Christen Hansson, and Paul Zieger
Chairperson: 16903
17:45–18:00 |
Srinath Krishnan, Annica M.L Ekman, Hans-Christen Hansson, Ilona Riipinen, Anna Lewinschal, and Tanja Dallafior

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