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Earth, Planets and Space

Table 2 Likely origins and predominant Hough mode compositions of well-defined solar thermal tidal components at 110 km as illustrated in Figures6, 7, 8, 9, and10

From: New perspectives on thermosphere tides: 1. Lower thermosphere spectra and seasonal-latitudinal structures

Tidal component

Excited by lower

Excited by nonlinear

First symmetric mode

First antisymmetric mode

Higher-order modes

 

atmosphere heating

wave-wave interactions

relative importance

relative importance

relative importance

DW1

*

 

1

0

0

SW2

*

 

2

1

3

TW3

*

*

3

1

2

DE3

*

 

1

2

0

DE2

*

 

1

2

0

D0

*

*

0

1

2

DW2

*

*

1

0

0

SE1

 

*

0

2

1

SE2

*

*

0

2

1

SE3

 

*

0

1

2

SE4

*

 

0

1

2

SW1

*

*

0

2

1

SW3

*

*

1

1

2

SW4

*

 

1

1

2

SW6

*

 

1

2

0

TW7

*

 

1

2

0

  1. *, indicate in the affirmative whether the indicated tidal component is likely excited by lower atmosphere forcing and/or nonlinear wave-wave interactions.
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