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Effects of convection on the removal of the multiplicity of stable states in one-dimensional vertical models

Here I develop a model of a radiative-convective atmosphere with both radiative and convective schemes highly simplified. The atmospheric absorption of radiation at selective wavelengths makes use of constant mass absorption coefficients in finite width spectral bands. The convective regime is introduced by using a prescribed lapse rate in the troposphere. The main novelty of the radiative-convective model developed here is that it is solved without using any angular approximation for the radiation field. The solution obtained in the purely radiation mode (i. e. with convection ignored) leads to multiple equilibria of stable states, being very similar to some results recently found in simple models of planetary atmospheres. However, the introduction of convective processes removes the multiple equilibria of stable states. This shows the importance of taking convective processes into account even for qualitative analyses of planetary atmosphere

漏 Quarterly Journal of the Royal Meteorological Society, 2004, vol. 130, n煤m. 598, p. 945-961

Royal Meteorological Society

Author: Pujol i Sagar贸, Toni
Date: 2004
Abstract: Here I develop a model of a radiative-convective atmosphere with both radiative and convective schemes highly simplified. The atmospheric absorption of radiation at selective wavelengths makes use of constant mass absorption coefficients in finite width spectral bands. The convective regime is introduced by using a prescribed lapse rate in the troposphere. The main novelty of the radiative-convective model developed here is that it is solved without using any angular approximation for the radiation field. The solution obtained in the purely radiation mode (i. e. with convection ignored) leads to multiple equilibria of stable states, being very similar to some results recently found in simple models of planetary atmospheres. However, the introduction of convective processes removes the multiple equilibria of stable states. This shows the importance of taking convective processes into account even for qualitative analyses of planetary atmosphere
Format: application/pdf
ISSN: 0035-9009 (versi贸 paper)
1477-870X (versi贸 electr貌nica)
Document access: http://hdl.handle.net/10256/7714
Language: eng
Publisher: Royal Meteorological Society
Collection: Reproducci贸 digital del document publicat a: http://dx.doi.org/10.1256/qj.02.144
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Is part of: 漏 Quarterly Journal of the Royal Meteorological Society, 2004, vol. 130, n煤m. 598, p. 945-961
Rights: Tots els drets reservats
Subject: Radiaci贸 atmosf猫rica
Atmospheric radiation
Climatologia
Climatology
Title: Effects of convection on the removal of the multiplicity of stable states in one-dimensional vertical models
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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