Cross-wave profiles of altitude and particle size of noctilucent clouds in the case of one-dimensional small-scale gravity wave pattern

This paper describes the wide-field three-color observations of an expanded field of noctilucent clouds modulated by a one-dimensional mode of gravity wave. Long wave crests were aligned by a small angle to the solar vertical in the sky. This made possible separate determination of altitude and particle size at different wave phases based on three-color photometry of noctilucent clouds. Thereby, it is possible to use simple optical images to record the changes in the parameters of noctilucent clouds during the passage of short-period gravity wave.