The Arctic Summer Cloud-Ocean Study (ASCOS): Overview and experimental design ...

• Main Authors: Tjernström, Michael, Leck, Caroline, Birch, Cathryn E., Brooks, Barbara J., Brooks, Ian M., Bäcklin, Leif, Chang, Rachel R.-W., Granath, E., Graus, Martin, Hansel, Armin, Heintzenberg, Jost, Held, Andreas, Hind, Andrew, De La Rosa, Sara, Johnston, Paul, Knulst, Johan, De Leeuw, Gerrit, Di Liberto, Luca, Martin, Maria, Matrai, Paty A., Mauritsen, Thorsten, Müller, Markus, Norris, Sarah J., Orellana, Mόnica V., Orsini, Douglas A., Paatero, Jussi, Persson, P. Ola G., Gao, Qiuju, Rauschenberg, Carlton, Ristovski, Zoran, Sedlar, Joseph, Shupe, Matthew D., Sierau, Berko, Sirevaag, Anders, Sjögren, Staffan, Stetzer, Olaf, Swietlicki, Erik, Szczodrak, Malgorzata, Vaattovaara, Petri, Walberg, Nils, Westberg, Martin, Wheeler, C.R.
• Format: Text
• Language: English
• Published: ETH Zurich 2013
• Subjects: Arctic; Arctic Ocean; International Polar Year; IPY; Longyearbyen; Svalbard
• Online Access: https://dx.doi.org/10.3929/ethz-b-000077217; http://hdl.handle.net/20.500.11850/77217

The climate in the Arctic is changing faster than anywhere else on Earth. Poorly un-derstood feedback processes relating to Arctic clouds and aerosol-cloud interactionscontribute to a poor understanding of the present changes in the Arctic climate system,and also to a large spread in projections of future climate in the Arctic. The problem is exacerbated by the paucity of research-quality observations in the central Arctic. Im-proved formulations in climate models require such observations, which can only comefrom measurements in-situ in this difficult to reach region with logistically demandingenvironmental conditions.The Arctic Summer Cloud-Ocean Study (ASCOS) was the most extensive central Arctic Ocean expedition with an atmospheric focus during the International Polar Year(IPY) 2007–2008. ASCOS focused on the study of the formation and life cycle of low-level Arctic clouds. ASCOS departed from Longyearbyen on Svalbard on 2 August andreturned on 9 September 2008. In transit into and out of the pack ice, ... : Atmospheric Chemistry and Physics Discussions, 13 (5) ...