Will the global temperature index in 2021 be at least 0.99°C greater than the average?
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Every year, NASA releases data about the Global Temperature Index - a measurement of the change in global surface temperature in comparison to its historical long-term average. In 2020, for example, the number indicated a rise of 0.99ºC.
If data from NASA for 2021 indicate a rise of 0.99°C or more in global surface temperature in comparison to the historical long-term average temperature, this market will be resolved as "YES".
Source: https://climate.nasa.gov/vital-signs/global-temperature/