It is standard procedure in the study of global warming to deseasonalize the temperature time series monthly means into monthly “temperature anomalies” by subtracting the corresponding monthly mean temperatures in a reference period. This procedure contains the assumption that the seasonal...

A month by month trend analysis at an annual time scale of the daily mean Central England Temperature (CET) series 1772-2016 shows a general warming trend for most autumn and winter months. These trends are usually described in terms of anthropogenic global warming (AGW). OLS diagnostics reveal...

Deseasonalized and detrended correlation analysis of mean monthly atmospheric CO2 concentrations and mean monthly surface temperature anomalies in the sample period 1958-2015 shows a statistically significant correlation that peaks when surface temperature lags atmospheric CO2 by four months....