Horizontal eddy diffusivity-
The horizontal exchange coefficient for the diffusion of a conservative property by eddies in a turbulent flow.
Horizontal velocity components-
Rate of change of displacement of air in each of the horizontal orthogonal directions (u and v, representing the x and y directions, respectively, on the model map projection).
Heat island-
Are closed isotherms indicating an area of the surface that is relatively warm; most commonly associated areas of human disturbance such as towns and cities.
Houtfmt-
The format flag of history data dump.