Definition of ceilometer in English:
A device for measuring and recording the height of clouds.
- The lasers are also built into laser ceilometers that measure cloud height.
- The distribution of all track directions observed with radar and ceilometers for all sites was bimodal with similar numbers of birds moving southsoutheast and southwest.
- The combination of high-resolution radar, ceilometers, and daily ground counts at multiple sites provided a view of autumnal migration through complex topography at a resolution not previously attained in North America.