  We discuss the impact of recent experimental results on the determination of
atmospheric neutrino oscillation parameters. We use all published results on
atmospheric neutrinos, including the preliminary large statistics data of
Super-Kamiokande. We re-analyze the data in terms of both $\nu_\mu \to
\nu_\tau$ and $\nu_\mu \to \nu_e$ channels using new improved calculations of
the atmospheric neutrino flux. We compare the sensitivity attained in
atmospheric neutrino experiments with those of accelerator and reactor neutrino
oscillation searches, including the recent Chooz experiment. We briefly comment
on the implications of atmospheric neutrino data in relation to future searches
for neutrino oscillations with long baselines, such as the K2K, MINOS, ICARUS
and NOE experiments.
