Before revision: Evidence Year-to-year global temperature of the hottest years on record Surface temperature changes: hiatus periods Climate is the statistics (usually, mean or variability) of weather: the classical period for averaging weather variables is 30 years in accordance with the definition set by the World Meteorological Organization.
After revision: Evidence Surface temperature changes: hiatus periods Climate is the statistics (usually, mean or variability) of weather: the classical period for averaging weather variables is 30 years in accordance with the definition set by the World Meteorological Organization.