Table 1 Spectral peaks in Fig. 2 and their interpretations

From: Rossby wave second harmonic generation observed in the middle atmosphere

index

date

Ta

mb

interpretation

reference

#1

Nov.–Jan.

14–18

1

AMc of the 2nd symmetric normal mode of m = 1

67

#2

Dec.–Jan.

4–5

2

AM of the 1st symmetric normal mode of m = 2

30

#3

Jan.–Feb.

2–3

2

AM of a Rossby-Gravity mode

32

#4

Feb.

7

2

AM of the 2nd symmetric normal mode of m = 2

31

#5

Jan.

8–9

2

AM of the SHG of the wave in #1

25

#6

Jan.

5–6

1

AM of the 1st symmetric normal mode of m = 1

30

  1. aT denotes the spectral period in the unit of day.
  2. bm denotes the zonal wavenumber in the unit of cycle per 360∘ longitude.
  3. cAM abbreviates ‘atmospheric manifestation’.
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