cloud coverage of lower layer cloud
cloud to cloud discharge
cloud-to-cloud discharge
cloud-to-cloud lightning
cumulonimbus cloud with warm cloud base
interaction between the cloud’s macro-dynamics and the cloud microphysics
radar cloud-base and cloud-top indicator
Stratiform Cloud and Wave Cloud
500 hPa northern polar vortex
a ll-over-controlled-vortex
adiabatic invariant of vortex
Air Jet Vortex Spinning