Vertical momentum and heat transport induced by wave breaking and cloud feedback heating in the venusian atmosphere

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)165-174
Number of pages10
JournalTheoretical and Applied Mechanics Japan
Volume63
DOIs
Publication statusPublished - Jan 1 2015

Fingerprint

Wave Breaking
Heat Transport
Atmosphere
Heating
Momentum
Heat Flux
Vertical
momentum
Feedback
atmospheres
heat
Heat flux
heat flux
heating
Penetration
Forcing
penetration
static stability
Gravity Waves
Fluxes

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

@article{a0c69f8258b342f3b9ac202344c3bcb2,
title = "Vertical momentum and heat transport induced by wave breaking and cloud feedback heating in the venusian atmosphere",
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.",
author = "Masaru Yamamoto",
year = "2015",
month = "1",
day = "1",
doi = "10.11345/nctam.63.165",
language = "English",
volume = "63",
pages = "165--174",
journal = "Theoretical and Applied Mechanics",
issn = "1348-0693",
publisher = "National Committee for IUTAM",

}

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.

UR - http://www.scopus.com/inward/record.url?scp=84943798946&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84943798946&partnerID=8YFLogxK

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 -