Hi, I was wondering how to find the wavenumber of a Rossby wave?(adsbygoogle = window.adsbygoogle || []).push({});

The information I have so far is speed of the wave is [tex]c = &\overline{u} - \frac{\beta}{k^2 + l^2}} [/tex]

where l and k are longitudinal/latitudinal wavenumbers, beta is df/dy and u is basic westward flow. I have determined the value of beta already.

What I want to know is, how can I determine the Rossby wavenumbers if I have a wave with longitudinal width. I believe I can discard one of the wavenumbers since the wave only propagates longitudinally.

But I am stuck trying to determine it. I think it is something like [tex] k = \frac{n \pi}{L}[/tex] but it does not give me exactly the right answer. - it is about 2 - 5 times bigger than required for various questions.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Problem with Rossby waves

**Physics Forums | Science Articles, Homework Help, Discussion**