  With the aim to describe the longitudinal development of Cherenkov dominated
showers we investigate the energy deposit and the number of charged particles
in air showers induced by energetic cosmic rays. Based on the Monte Carlo
simulations, discrepancies between different estimates of calorimetric energies
are documented. We focus on the energy deposit profiles of air showers
deducible from the fluorescence and Cherenkov light generated along CONEX and
CORSIKA cascades.
