A new, fast and flexible radiative transfer method for Venus general circulation models

Mendonca, Joao; Read, P. L.; Wilson, C. F.; Lee, C. (2015). A new, fast and flexible radiative transfer method for Venus general circulation models. Planetary and space science, 105, pp. 80-93. Elsevier 10.1016/j.pss.2014.11.008

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We present a new radiation scheme for the Oxford Planetary Unified Model System for Venus, suitable for the solar and thermal bands. This new and fast radiative parameterization uses a different approach in the two main radiative wavelength bands: solar radiation (0.1-5.5 mu m) and thermal radiation (1.7-260 mu m). The solar radiation calculation is based on the delta-Eddington approximation (two-stream-type) with an adding layer method. For the thermal radiation case, a code based on an absorptivity/emissivity formulation is used. The new radiative transfer formulation implemented is intended to be computationally light, to allow its incorporation in 3D global circulation models, but still allowing for the calculation of the effect of atmospheric conditions on radiative fluxes. This will allow us to investigate the dynamical-radiative-microphysical feedbacks. The model flexibility can be also used to explore the uncertainties in the Venus atmosphere such as the optical properties in the deep atmosphere or cloud amount. The results of radiative cooling and heating rates and the global-mean radiative-convective equilibrium temperature profiles for different atmospheric conditions are presented and discussed. This new scheme works in an atmospheric column and can be easily implemented in 3D Venus global circulation models. (C) 2014 Elsevier Ltd. All rights reserved.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Center for Space and Habitability (CSH)
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences

UniBE Contributor:

Do Carmo Fialho Mendonça, João Manuel

Subjects:

500 Science > 520 Astronomy
500 Science > 530 Physics

ISSN:

0032-0633

Publisher:

Elsevier

Language:

English

Submitter:

Katharina Weyeneth-Moser

Date Deposited:

16 Sep 2016 13:29

Last Modified:

16 Sep 2016 13:36

Publisher DOI:

10.1016/j.pss.2014.11.008

Web of Science ID:

000348083900006

BORIS DOI:

10.7892/boris.82006

URI:

https://boris.unibe.ch/id/eprint/82006

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