Which parameters affect the CdA value?

The CdA value depends on various parameters. In descending order of the medium influence on the CdA value, these are the following: power, speed, ascent, wind speed, rolling resistance, drive power losses and air density. The speed is, for example, present with the third power in the Newtonian equation of motion, the velocity of the wind only with the second power.1)

1) cf. Hering, Ekbert; Martin, Rolf; Stohrer, Martin (2007): Physik für Ingenieure. Edition 10. Berlin, Heidelberg: Springer Verlag. Page 49, 64