K
A symbol used in older texts on ocean tides, and modern texts on Earth tides, that refer to phase. This practice places the tidal phase lag and the reference signal in the local time zone.
Downslope wind caused by gravity when the air on the slope is denser than air at the same height away from the slope. The wind is linked to surface cooling of the slope.
A temperature scale, designed by Lord Kelvin of Scotland in 1848, where 0°K is defined as absolute zero (where all molecular movement stops). Water freezes at 273°K, and boils at 373°K. It is used primarily for scientific purposes.
Cloud that forms in Kelvin-Helmholtz waves. The clouds, sometimes referred to as billows, are in the shape of breaking waves. These clouds are often good indicators of instability and the presence of turbulence.
Occurs when velocity shear is present within a continuous fluid, or when there is sufficient velocity difference across the interface between two fluids.
A waveform disturbance that arises from Kelvin-Helmholtz instability. Named after Lord Kelvin and Hermann von Helmholtz.
While not a scientific term, 'king tide' is widely used to describe an exceptionally high tide. These tides are a natural and predictable part of the tidal cycle. The time of year they happen varies by location and between years.
Unit of speed equal to 1 nautical mile an hour.
Classifies climate based on annual and monthly average temperature and rainfall. It also takes into account the types of vegetation in each zone.