Search Results

You are looking at 41 - 50 of 16,860 items for :

  • Planetary atmospheres x
  • All content x
Clear All
Albert Arking and Kenneth Grossman

Jui~-1972 ALBERT ARKING AND KENNETH GROSSMAN 937The Influence of Line Shape and Band Structure on Temperatures in Planetary Atmospheres ALBERT ARKING Goddard Space Flight Center, Greenbelt, Md. AND KENNETtt GROSSMANComputer Sciences Corp., New York, N. Y.(Manuscript received 14 February 1972, in revised form 27 March 1972)ABSTRACT Numerical experiments

Full access
J. E. Hansen

478JOURNAL OF THE ATMOSPHERIC .SCIENCESVoLU~E 26Exact and Approximate Solutions for Multiple Scattering by Cloudy and Hazy Planetary Atmospheres JAMES E. HANSENInstitute for Space Studies, Goddard Space Flight Center, NASA, New York, N. Y.(Manuscript received 20 September 1968)ABSTRACT Solutions are obtained for the problem of multiple scattering by a plane parallel atmosphere with anisotropic phase functions typical of cloud and haze particles. The

Full access
Norihiko Fukuta

Infrared Absorption Line Formation in Cloudy Planetary Atmospheres NORIHIKO FUKUTADenver Research Institute, University of Denver, Colo. 10 March 1971 and 26 July 1971ABSTRACT It is proposed, for the interpretation of infrared absorption spectra carrying information of a planetaryatmosphere and the condensing clouds, that the following three conditions must be considered: 1) theexchange of the cloud constituents with overlying clear gas due to convective mixing; 2) the partition

Full access
Takeshi Imamura

1. Introduction Planetary-scale free waves whose horizontal structures extend over the whole planet have been observed in the middle atmospheres of the Earth, Mars, and Venus (e.g., Andrews et al. 1987 ; Forbes 2002 ). The vertical momentum transport by such waves is considered to influence the mean flow and has been studied extensively. Latitudinal eddy momentum flux is zero in the classical wave solutions where the background flow is rigid body rotation; however, the occurrence of such

Full access
Brian F. Farrell and Petros J. Ioannou

. Baroclinic turbulence adjusts the atmospheric state to marginally stable equilibria and thus these equilibria constitute the basis for a theoretical understanding of the general circulation of turbulence-dominated circulations such as that of the midlatitude atmosphere. We present two examples: turbulence supported by relaxation to a meridionally localized unstable temperature gradient, and turbulence supported in a wide channel relaxed to a meridionally constant unstable temperature gradient. In the

Full access
Greg Holloway

1982)ABSTRACT Theoretical predictability of the atmosphere is limited in part by the rate at which small-scale observationalerrors in the initiation of a forecast grow both in amplitude and in length scale with increasing time. Processesof error growth are examined for the case of equivalent barotropic motion on a O-plane. From direct numericalsimulations and from statistical closure theory, it is seen that larger/~ implies slower rate of error growth.Thus planetary wave propagation enhances

Full access
D. Gautier and I. Revah

MA-1975 D. GAUTIER AND I. REVAH 881Sounding of Planetary Atmospheres: A Fourier Analysis of the Radiative Transfer Equation D. GAuz~R Groupe Plan~tes, Obse. rvatoire de Meudon, France I. R~v^aCentre ~ ational d'Etudes des TgI~communlcations, Issy Les Moulineaux, France(Manuscript received 3 October 1974, in revised form 23 January 1975)ABSTRACT In

Full access
João Rafael Dias Pinto and Jonathan Lloyd Mitchell

, and diurnal and seasonal cycles are absent from the forcing. The specific form of this idealized treatment is described in detail in Held and Suarez (1994) and Dias Pinto and Mitchell (2014) . To simulate the general circulation in a higher-Rossby-number regime—a characteristic of Venus’s and Titan’s atmospheres—we followed Mitchell and Vallis (2010) , in which such a regime is achieved by decreasing the planetary radius instead of a slower rotation rate. Their rational is that, by considering

Full access
B. Haurwitz

200JOURNAL OF METEOROLOGY VOLUME 6THE INSTABILITY OF WIND DISCONTINUITIES AND SHEAR ZONESIN PLANETARY ATMOSPHERES By B. HaurwitzCollege of Engineering, New York University(Manuscript received 18 November 1948)ABSTRACTIt is shown that perturbations forming at wind discontinuities in the atmospheres of rotating planets areunstable, even though the distribution of the angular momentum of the rotating planet exerts a stabilizinginfluence. Consequently disturbances can develop spontaneously

Full access
William B. Streett

924 JOURNAL OF THE ATMOSPHERIC SCIENCES VOLUl~IE26Phase Equilibria in Planetary Atmospheres W~L~ B. STP,~r, LT. COL., U. S. A.Dept. of Chemistry, United States Military Academy, West Point, N. Y.(Manuscript received 29 May 1969, in revised form 16 June 1969)ABSTRACT Experimental phase diagrams for binary mixtures, extrapolated to very high pressures, suggest thatlayered structures may exist deep in the

Full access