Section 3.2: Spectral Characteristics of Atmospheric Variables
33
Figure 3.3: Normalized spectra, with approximately 19 degrees offreedom, of
the 500 hPa geopotential height at 45° N, wavenumbers 1 to 12. Below 10-1
cpd, the unsmoothed spectra (with 1.6 degrees offreedom) are also plot ted.
(From Wilson, 1975).
>- tVi
Z
~
wl0 2
U
z
<:
ä:
~
8 10
N
;f
& o z
=12
~k=2 10&[
10 5
33
Figure 3.3: Normalized spectra, with approximately 19 degrees offreedom, of
the 500 hPa geopotential height at 45° N, wavenumbers 1 to 12. Below 10-1
cpd, the unsmoothed spectra (with 1.6 degrees offreedom) are also plot ted.
(From Wilson, 1975).
>- tVi
Z
~
wl0 2
U
z
<:
ä:
~
8 10
N
;f
& o z
=12
~k=2 10&[
10 5