1. Charney (1948): On the Scale of Atmospheric Motions
Some key points

2. General equations of motion (conservation laws)
Are indeed general
Allow a wide range of behavior  Complicates working with them
Need to filter out the “noise”
Large-scale behavior of atmosphere is
~ hydrostatic
~ adiabatic
~ horizontal
~ quasi-geostrophic

3. Motivations Gain physical insight through analysis
Produce simpler numerical weather prediction equations
How do we implement these appropriately? (have a closed, consistent system)