Scientific journal publication Seasonal variability of atmospheric nitrogen oxides and non-methane hydrocarbons at the GEOSummit station, Greenland. Kramer, L.J.; Helmig, D.; Burkhart, J.F.; Stohl, A.; Oltmans, S.; Honrath, R.E. Publication details Journal: Atmospheric Chemistry and Physics, 15, 6827–6849, 2015 DOI: 10.5194/acp-15-6827-2015