Before revision: By 2021, enough data was available to show that the Arctic had warmed three times faster than the globe - 3.1 °C between 1971 to 2019, as opposed to the global warming of 1 °C over the same period.
After revision: By 2021, enough data was available and show that the Arctic had warmed three times faster than the globe - 3.1 °C between 1971 to 2019, as opposed to the global warming of 1 °C over the same period.