# What is the proper association measure of a variable with a PCA component (on a biplot / loading plot)?

I am using FactoMineR to reduce my data set of measurements to the latent variables.

The variable map above is clear for me to interpret, but I am confused when it comes to the associations between the variables and component 1. Looking at the variable map, ddp and covis very close to the component in the map, and ddpAbs is a bit further away. But, this is not what the correlations show: