Study of trends in climate essentially began in the 1970s with the prediction of a coming mini ice age as temperatures declined from 1940. When temperature increased in the mid-1980s they said this new trend would continue unabated. Political users of climate adopted what I called the trend wagon. The IPCC made the trend inevitable by saying human CO2 was the cause and it would continue to increase as long as industrial development continued. Like all previous trends, it did not last as temperatures trended down after 1998.
For year-to-year living and business the variability is very important. Farmers know you don’t plan next year’s operation on last year’s weather, but reduced variability reduces risk considerably. The most recent change in variability is normal and explained by known mechanisms but exploited as abnormal by those with a political agenda.