  Recent observations have shown that the photometric and dynamic properties of
granulation and of small-scale magnetic features depend on the amount of
magnetic flux of the region they are embedded in. We analyze results from
numerical Hydro and Magneto Hydrodynamic simulations characterized by different
amount of average magnetic flux and find qualitatively the same differences as
those reported from observations. We show that these different physical
properties result from the inhibition of convection induced by the presence of
the magnetic field, which changes the temperature stratification of both quiet
and magnetic regions. Our results are relevant for solar irradiance variations
studies, as such differences are still not properly taken into account in
irradiance reconstruction models.
