The predominantly horizontal transport of an atmospheric property by the
wind, e.g.
moisture[?] or
heat advection. Mathematically it is the operator (in
z and
p vertical coordinates)
- <math>\mathbf{v} \cdot \nabla = u \frac{\partial}{\partial x} + v \frac{\partial}{\partial y} + w \frac{\partial}{\partial z} = u \frac{\partial}{\partial x} + v \frac{\partial}{\partial y} + \omega \frac{\partial}{\partial p}</math>.