OASIS-CANADA-OOTI TARA: Measurements of ozone during the TARA drift over the Arctic Ocean

These first year-long measurements of ozone concentration in the surface air over the frozen Arctic Ocean, hundreds of kilometres from land, were obtained by an instrument onboard the French schooner TARA drifting with the ice for 16 months. Collected data confirmed the occurrence of long periods with substantial to complete destruction of ozone in the spring air after the Polar sunrise, which was predicted by satellite measurements of bromine monoxide over the Arctic. The record reflects the seasonal cycle of ozone measured over the Arctic Ocean.