Abstract
Abstract. Isca is a framework for the idealized modelling of the global
circulation of planetary atmospheres at varying levels of complexity and
realism. The framework is an outgrowth of models from the Geophysical Fluid
Dynamics Laboratory in Princeton, USA, designed for Earth's atmosphere, but
it may readily be extended into other planetary regimes. Various forcing and
radiation options are available, from dry, time invariant, Newtonian thermal
relaxation to moist dynamics with radiative transfer. Options are available
in the dry thermal relaxation scheme to account for the effects of obliquity
and eccentricity (and so seasonality), different atmospheric optical depths
and a surface mixed layer. An idealized grey radiation scheme, a two-band
scheme, and a multiband scheme are also available, all with simple moist
effects and astronomically based solar forcing. At the complex end of the
spectrum the framework provides a direct connection to comprehensive
atmospheric general circulation models. For Earth modelling, options include an aquaplanet and configurable
continental outlines and topography. Continents may be defined by changing
albedo, heat capacity, and evaporative parameters and/or by using a simple
bucket hydrology model. Oceanic Q fluxes may be added to reproduce
specified sea surface temperatures, with arbitrary continental distributions.
Planetary atmospheres may be configured by changing planetary size and mass,
solar forcing, atmospheric mass, radiation, and other parameters. Examples
are given of various Earth configurations as well as a giant planet
simulation, a slowly rotating terrestrial planet simulation, and
tidally locked and other orbitally resonant exoplanet simulations. The underlying model is written in Fortran and may largely be configured with
Python scripts. Python scripts are also used to run the model on different
architectures, to archive the output, and for diagnostics, graphics, and
post-processing. All of these features are publicly available in a Git-based
repository.
Cited by
93 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献