{"chart":{"title":"Concentration of ozone in the stratosphere","subtitle":"Stratospheric ozone concentration in the Southern Hemisphere – based on satellite measurements at a latitude south of 40°S. This is measured in [Dobson Units (DU)](#dod:dobsonunit).","citation":"NASA Ozone Watch (2024)","originalChartUrl":"https://ourworldindata.org/grapher/stratospheric-ozone-concentration","selection":["World"]},"columns":{"Minimum daily concentration":{"titleShort":"Minimum daily concentration","titleLong":"Minimum daily concentration","descriptionShort":"The yearly minimum daily minimum ozone.\n","descriptionKey":["The minimum ozone is found from total ozone satellite measurements south of 40°S. No interpolation of missing values is performed. This means that the actual minimum value on a day may be estimated too high, especially in the polar night region."],"shortUnit":"DU","unit":"Dobson Units (DU)","timespan":"1979-2024","type":"Integer","owidVariableId":1025691,"shortName":"min_hole_concentration","lastUpdated":"2025-04-14","nextUpdate":"2026-04-14","citationShort":"NASA Ozone Watch (2024) – with minor processing by Our World in Data","citationLong":"NASA Ozone Watch (2024) – with minor processing by Our World in Data. “Minimum daily concentration” [dataset]. NASA Ozone Watch, “Ozone hole area and concentration” [original data].","fullMetadata":"https://api.ourworldindata.org/v1/indicators/1025691.metadata.json"},"Mean daily concentration":{"titleShort":"Mean daily concentration","titleLong":"Mean daily concentration","descriptionShort":"Minimum ozone (21 September - 16 October) for each year.\n","shortUnit":"DU","unit":"Dobson Units (DU)","timespan":"1979-2024","type":"Numeric","owidVariableId":1025695,"shortName":"mean_hole_concentration","lastUpdated":"2025-04-14","nextUpdate":"2026-04-14","citationShort":"NASA Ozone Watch (2024) – with minor processing by Our World in Data","citationLong":"NASA Ozone Watch (2024) – with minor processing by Our World in Data. “Mean daily concentration” [dataset]. NASA Ozone Watch, “Ozone hole area and concentration” [original data].","fullMetadata":"https://api.ourworldindata.org/v1/indicators/1025695.metadata.json"}},"dateDownloaded":"2025-07-09"}