  A new method for analyzing the returns of the custom-made 'micro'-LIDAR
system, which is operated along with the two MAGIC telescopes, allows to apply
atmospheric corrections in the MAGIC data analysis chain. Such corrections make
it possible to extend the effective observation time of MAGIC under adverse
atmospheric conditions and reduce the systematic errors of energy and flux in
the data analysis. LIDAR provides a range-resolved atmospheric backscatter
profile from which the extinction of Cherenkov light from air shower events can
be estimated. Knowledge of the extinction can allow to reconstruct the true
image parameters, including energy and flux. Our final goal is to recover the
source-intrinsic energy spectrum also for data affected by atmospheric
extinction from aerosol layers, such as clouds.
