altocumulus cloud

in atmospheric chemistry
https://doi.org/10.1351/goldbook.A00256
A dappled layer of patch or cloud composed of flattened globules that may be arranged in groups, lines or waves collectively known as billows; \(\text{2000–6000 m}\); vertical velocities of \(\text{0.05–0.1 m s}^{-1}\).
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2180 [Terms] [Paper]