Dynamical effects of solar heating below the cloud layer in a venus-like atmosphere

Masaru Yamamoto, Masaaki Takahashi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The dynamics of Venus' lower-atmospheric superrotation remain an open issue. In the present study, we investigate the sensitivity of the superrotation to diabatic heating rate below the cloud layer using a simplified GCM. A fully developed superrotation fails to develop in the lower atmosphere under the condition with a fairly low diabatic heating below the cloud layer, as is thought to be realistic. Additional radiative forcing in the lower atmosphere and/or eddy momentum source should be considered to produce lower-atmospheric superrotation. The diabatic heating rate below the cloud layer controls the formation of the multiple superrotation states (slow, fast, and extremely fast superrotations). Small changes in the weak lower-atmospheric heating lead to drastic changes of the middle-and lower-atmospheric superrotation.

Original languageEnglish
Article numberE12004
JournalJournal of Geophysical Research E: Planets
Volume114
Issue number12
DOIs
Publication statusPublished - Dec 1 2009

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superrotation
Venus atmosphere
solar heating
Solar heating
Venus
Heating rate
heating
heat
Heating
atmosphere
Momentum
lower atmosphere
momentum
radiative forcing
atmospheric heating
general circulation model
eddy
Venus (planet)
effect
vortices

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Dynamical effects of solar heating below the cloud layer in a venus-like atmosphere. / Yamamoto, Masaru; Takahashi, Masaaki.

In: Journal of Geophysical Research E: Planets, Vol. 114, No. 12, E12004, 01.12.2009.

Research output: Contribution to journalArticle

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