Weekly balloon-borne ozone profiles are measured at The Greenland Environmental Observatory (GEOSummit, station code SUM) on the summit of the Greenland Ice Sheet: 72.6° North, 38.5° West: 3202 meters above sea level.Date of Measurements:
February 12, 2005 – current.
You can view vertical profiles of ozone sondes from Summit.
Data files for the Summit ozonesondes can be found at
The GEOSummit site was established by the U.S. National Science Foundation (NSF) and the Danish Commission for Scientific Research in Greenland to provide year-round, long-term measurements for monitoring and investigations of the Arctic environment.