Quantitative precipitation estimation-
The estimation of the amount of rainfall or rainfall rates based on radar measurements or satellite data.
Quasigeostrophic-
A system or flow that evolves slowly in time compared to the rotation period of the earth, has a length scale of the deformation radius or larger, and undergoes only limited vertical excursions.
Quasi hydrostatic approximation-
The use of the hydrostatic equation as the vertical equation of motion, thus implying that the vertical accelerations are small without constraining them to be zero.
Quasi Lagrangian coordinates-
A system of mixed Eulerian and Lagrangian coordinates.
Q vector-
A horizontal vector, arising in quasigeostrophic and semigeostrophic theory, the divergence of which appears on the right-hand side of the omega equation.
