PowerPoint Presentation - The Hockey Stick Controversy

Gravity waves

Dispersion Relation for LANS-a
using linearized shallow water equations

normally:

with LANS-a:

Rossby waves

normally:

LANS-a:

normal

with LANS-a

normal

with LANS-a

LANS-a slows down gravity and Rossby waves at high wave number.

frequency w, wavenumber k, gravity g, height H

Rossby radius

Dispersion relation

beta