Fig. 5

Relationship between local climatic variables and changes in mean temperature over Ghana during the December, January, and February (DJF) season. Scatter plot of the standardized mean temperature anomalies versus the standardized mean anomalies of a land surface temperature (LST), b precipitation (PRE), c relative humidity (RH), d total cloud cover (TC). The “r” represents the correlation coefficient, and “*” symbolizes a significant correlation at a 95% confidence level. The color scheme distinguishes between two periods: BC (1981–2000, blue) and AC (2001–2020, red). The distribution of red and blue data points provide insight into how the relationships between various local climatic variables and NST anomalies have evolved.