Sodemann, Pommier, Arnold, Monks, Stebel, Burkhart, Hair, Diskin, Clerbaux, Coheur, Hurtmans, Schlager, Blechschmidt, Kristjánsson, Stohl, 2011. Episodes of cross-polar transport in the Arctic troposphere during July 2008 as seen from models, satellite, and aircraft observations 11.. https://doi.org/10.5194/acp-11-3631-2011