{"entity":{"iso2":null,"iso3":"HMD","name":"Heard Island and McDonald Islands","slug":"heard-island-and-mcdonald-islands"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"decadal-average-surface-temperature","source":"Contains modified Copernicus Climate Change Service information (2026) \u2013 with major processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/decadal-average-surface-temperature","title":"Decadal average surface temperature","unit":"\u00b0C"},"observations":[{"date":"1940-01-01","value":0.912549},{"date":"1950-01-01","value":1.16882},{"date":"1960-01-01","value":1.31284},{"date":"1970-01-01","value":1.32464},{"date":"1980-01-01","value":1.55519},{"date":"1990-01-01","value":1.49334},{"date":"2000-01-01","value":1.51727},{"date":"2010-01-01","value":1.79585}],"summary":{"latest_period":"2010-01-01","latest_value":1.79585,"max":1.79585,"mean":1.38506,"min":0.912549,"of":193,"rank":185,"trend":"rising"}}