  The atmosphere of Triton was probed directly by observing a ground-based
stellar occultation on 6 October 2022. This rare event yielded 23 positive
light curves collected from 13 separate observation stations contributing to
our campaign. The significance of this event lies in its potential to directly
validate the modest pressure fluctuation on Triton, a phenomenon not
definitively verified by previous observations, including only five stellar
occultations, and the Voyager 2 radio occultation in 1989. Using an approach
consistent with a comparable study, we precisely determined a surface pressure
of $14.07_{-0.13}^{+0.21}~\mathrm{\mu bar}$ in 2022. This new pressure rules
out any significant monotonic variation in pressure between 2017 and 2022
through direct observations, as it is in alignment with the 2017 value.
Additionally, both the pressures in 2017 and 2022 align with the 1989 value.
This provides further support for the conclusion drawn from the previous
volatile transport model simulation, which is consistent with the observed
alignment between the pressures in 1989 and 2017; that is to say, the pressure
fluctuation is modest. Moreover, this conclusion suggests the existence of a
northern polar cap extended down to at least $45^\circ$N$-60^\circ$N and the
presence of nitrogen between $30^\circ$S and $0^\circ$.
