Since the last day of 2001 CO2 has risen from 372 to 419 ppm. However, there have been two cooling periods of 12 years (2002-2014) and 7.5 years (2014-2021), separated by a 1.5-year El Niño-induced warming event (2015-2016). Temperature changes that proceed in step- or event-like fashion do not seem to correlate well with linearly-rising … Continue reading The HadCRUT4 Global Temperature Dataset Now Unveils A Cooling Trend For The Last 7.5 Years