Abstract
Upward convective heat fluxes in the Venusian low-stability layer (~55 km) become larger as wave-forcing and heating amplitudes are increased in 5.5-day wave and cloud feedback heating (CFH) experiments. In contrast, the upward heat flux is weak and insensitive to the wave-forcing amplitude in 8-day wave experiments, because the forced wave predominantly breaks below the low-stability layer. The planetary-scale wave breaking induces downward heat flux at 45-50 km. In addition, convective penetration produces downward heat fluxes near the top and bottom of the low-stability layer when the convection is fully developed. Above 60 km, vertically propagating gravity waves emitted from the low-stability layer have negative momentum fluxes. The maximum downward eddy momentum flux is proportional to the upward heat flux in the low-stability layer. Fine structures of atmospheric static stability vary between wave propagation, convective penetration, and planetary-scale wave breaking.
| Original language | English |
|---|---|
| Pages (from-to) | 165-174 |
| Number of pages | 10 |
| Journal | Theoretical and Applied Mechanics Japan |
| Volume | 63 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
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All Science Journal Classification (ASJC) codes
- Mathematics(all)
- Condensed Matter Physics
- Mechanics of Materials
Cite this
Vertical momentum and heat transport induced by wave breaking and cloud feedback heating in the venusian atmosphere. / Yamamoto, Masaru.
In: Theoretical and Applied Mechanics Japan, Vol. 63, 01.01.2015, p. 165-174.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vertical momentum and heat transport induced by wave breaking and cloud feedback heating in the venusian atmosphere
AU - Yamamoto, Masaru
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Upward convective heat fluxes in the Venusian low-stability layer (~55 km) become larger as wave-forcing and heating amplitudes are increased in 5.5-day wave and cloud feedback heating (CFH) experiments. In contrast, the upward heat flux is weak and insensitive to the wave-forcing amplitude in 8-day wave experiments, because the forced wave predominantly breaks below the low-stability layer. The planetary-scale wave breaking induces downward heat flux at 45-50 km. In addition, convective penetration produces downward heat fluxes near the top and bottom of the low-stability layer when the convection is fully developed. Above 60 km, vertically propagating gravity waves emitted from the low-stability layer have negative momentum fluxes. The maximum downward eddy momentum flux is proportional to the upward heat flux in the low-stability layer. Fine structures of atmospheric static stability vary between wave propagation, convective penetration, and planetary-scale wave breaking.
AB - Upward convective heat fluxes in the Venusian low-stability layer (~55 km) become larger as wave-forcing and heating amplitudes are increased in 5.5-day wave and cloud feedback heating (CFH) experiments. In contrast, the upward heat flux is weak and insensitive to the wave-forcing amplitude in 8-day wave experiments, because the forced wave predominantly breaks below the low-stability layer. The planetary-scale wave breaking induces downward heat flux at 45-50 km. In addition, convective penetration produces downward heat fluxes near the top and bottom of the low-stability layer when the convection is fully developed. Above 60 km, vertically propagating gravity waves emitted from the low-stability layer have negative momentum fluxes. The maximum downward eddy momentum flux is proportional to the upward heat flux in the low-stability layer. Fine structures of atmospheric static stability vary between wave propagation, convective penetration, and planetary-scale wave breaking.
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U2 - 10.11345/nctam.63.165
DO - 10.11345/nctam.63.165
M3 - Article
VL - 63
SP - 165
EP - 174
JO - Theoretical and Applied Mechanics
JF - Theoretical and Applied Mechanics
SN - 1348-0693
ER -