Prograde and retrograde atmospheric rotation of cloud-covered terrestrial planets

Masaru Yamamoto, M. Takahashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Context. Cloud-covered middle-atmospheric dynamics are important in the strong prograde rotation (i.e. superrotation) observed in some terrestrial-planet atmospheres, such as Venus and Titan. In addition, the unified theory and the mechanism driving the general circulation could be extended to as yet unknown extrasolar Earth-sized habitable planet atmospheres. Aims. We elucidate the dynamical process controlling prograde and retrograde atmospheric rotation induced by cloud heating in the middle atmosphere of terrestrial planets. Methods. The terrestrial middle-atmospheric circulation is examined using a general circulation model in which astronomical parameters are varied. Results. Middle-atmospheric circulation is strongly controlled by seasonal variation of the meridional circulation. Prograde and retrograde atmospheric rotation is determined by the direction of vertical angular momentum transport due to the meridional circulation resulting from tilting of the planetary rotation axis. The retrograde rotation rate is limited to -Ω for slowly rotating planets (where Ω is the planetary rotation rate).

Original languageEnglish
JournalAstronomy and Astrophysics
Volume490
Issue number2
DOIs
Publication statusPublished - Nov 1 2008

Fingerprint

terrestrial planets
planet
planetary rotation
meridional circulation
atmospheric circulation
planets
atmospheric dynamics
superrotation
atmosphere
middle atmosphere
Titan
atmospheres
Venus
angular momentum
Venus (planet)
general circulation model
annual variations
seasonal variation
heating
rate

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Prograde and retrograde atmospheric rotation of cloud-covered terrestrial planets. / Yamamoto, Masaru; Takahashi, M.

In: Astronomy and Astrophysics, Vol. 490, No. 2, 01.11.2008.

Research output: Contribution to journalArticle

@article{4fb623e66b64421fbdf70529105b6d15,
title = "Prograde and retrograde atmospheric rotation of cloud-covered terrestrial planets",
abstract = "Context. Cloud-covered middle-atmospheric dynamics are important in the strong prograde rotation (i.e. superrotation) observed in some terrestrial-planet atmospheres, such as Venus and Titan. In addition, the unified theory and the mechanism driving the general circulation could be extended to as yet unknown extrasolar Earth-sized habitable planet atmospheres. Aims. We elucidate the dynamical process controlling prograde and retrograde atmospheric rotation induced by cloud heating in the middle atmosphere of terrestrial planets. Methods. The terrestrial middle-atmospheric circulation is examined using a general circulation model in which astronomical parameters are varied. Results. Middle-atmospheric circulation is strongly controlled by seasonal variation of the meridional circulation. Prograde and retrograde atmospheric rotation is determined by the direction of vertical angular momentum transport due to the meridional circulation resulting from tilting of the planetary rotation axis. The retrograde rotation rate is limited to -Ω for slowly rotating planets (where Ω is the planetary rotation rate).",
author = "Masaru Yamamoto and M. Takahashi",
year = "2008",
month = "11",
day = "1",
doi = "10.1051/0004-6361:200810530",
language = "English",
volume = "490",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "2",

}

TY - JOUR

T1 - Prograde and retrograde atmospheric rotation of cloud-covered terrestrial planets

AU - Yamamoto, Masaru

AU - Takahashi, M.

PY - 2008/11/1

Y1 - 2008/11/1

N2 - Context. Cloud-covered middle-atmospheric dynamics are important in the strong prograde rotation (i.e. superrotation) observed in some terrestrial-planet atmospheres, such as Venus and Titan. In addition, the unified theory and the mechanism driving the general circulation could be extended to as yet unknown extrasolar Earth-sized habitable planet atmospheres. Aims. We elucidate the dynamical process controlling prograde and retrograde atmospheric rotation induced by cloud heating in the middle atmosphere of terrestrial planets. Methods. The terrestrial middle-atmospheric circulation is examined using a general circulation model in which astronomical parameters are varied. Results. Middle-atmospheric circulation is strongly controlled by seasonal variation of the meridional circulation. Prograde and retrograde atmospheric rotation is determined by the direction of vertical angular momentum transport due to the meridional circulation resulting from tilting of the planetary rotation axis. The retrograde rotation rate is limited to -Ω for slowly rotating planets (where Ω is the planetary rotation rate).

AB - Context. Cloud-covered middle-atmospheric dynamics are important in the strong prograde rotation (i.e. superrotation) observed in some terrestrial-planet atmospheres, such as Venus and Titan. In addition, the unified theory and the mechanism driving the general circulation could be extended to as yet unknown extrasolar Earth-sized habitable planet atmospheres. Aims. We elucidate the dynamical process controlling prograde and retrograde atmospheric rotation induced by cloud heating in the middle atmosphere of terrestrial planets. Methods. The terrestrial middle-atmospheric circulation is examined using a general circulation model in which astronomical parameters are varied. Results. Middle-atmospheric circulation is strongly controlled by seasonal variation of the meridional circulation. Prograde and retrograde atmospheric rotation is determined by the direction of vertical angular momentum transport due to the meridional circulation resulting from tilting of the planetary rotation axis. The retrograde rotation rate is limited to -Ω for slowly rotating planets (where Ω is the planetary rotation rate).

UR - http://www.scopus.com/inward/record.url?scp=54549113354&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=54549113354&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:200810530

DO - 10.1051/0004-6361:200810530

M3 - Article

VL - 490

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 2

ER -