The Planetary Wave Activity in Temperatures of the Stratosphere, Mesosphere and in Critical Frequencies of Ionospheric F2 Layer

Figure 3

Periodogram spectra of stratospheric temperature (a), mesospheric temperature (b), ΔfoF2 (c) in the period range of 5–50 days. Statistical significance level corresponds to 𝑅≥0.3.

(a)

(b)

(c)