Aquaplanet is a term used to describe a hypothetical planet that has no land and is entirely covered by water. It means that there are no continents or islands, only vast ocean everywhere.
Full definition
To test the importance of these factors in initiating MJOs, Maloney and Wolding used a modified version of the National Center for Atmospheric Research Community Atmospheric Model version 3.1 (CAM3) run
in aquaplanet mode.
Here the authors present global
aquaplanet simulations with a low - resolution, nonhydrostatic model free of convective parameterization, and describe the effect on the global climate of very large rescaling of the vertical acceleration.
Ttropical cyclone statistics in the global
aquaplanet model of Ballinger et al 2015 varying the strength of the surface temperature gradient in the tropics.
In the
idealized aquaplanet setting, where the simulated climate should be zonally symmetric, their results showed that by introducing a high - resolution region in the tropics embedded in a global or very large domain with coarse resolution elsewhere produces zonal asymmetry in the simulated climate.
Although their conclusions are broadly consistent with reported observations, the researchers acknowledge that the details differ because of the model's idealized
aquaplanet setup.
I've discussed one
aquaplanet study of TCs using a slab ocean, Merlis et al 2013, in post # 42.
Methods: To understand the dynamics of the jet stream, the PNNL team started with a simple configuration of the Earth as
an aquaplanet covered only by ocean, using model versions that are spatially less - detailed and more - detailed.
The moist idealized GCM has a spherical model surface that is entirely water covered (an «
aquaplanet»).
Levine, X. J., and T. Schneider, 2011: Response of the Hadley circulation to climate change in
an aquaplanet GCM coupled to a simple representation of ocean heat transport.
The topography (e.g., the Andes) modulates the precipitation patterns so that they are less concentric about the subsolar point than in
the aquaplanet simulations in Merlis and Schneider (2010).
In the first study, the research team from PNNL and Los Alamos National Laboratory used idealized global model simulations of
the aquaplanet with Model for Prediction Across Scales - Atmosphere (MPAS - A) and Weather Research and Forecasting Model (WRF) to run at low, high and variable resolutions.
We subject
an aquaplanet GCM to a large array of different spatial patterns and magnitudes of ocean heat transport, and look at how variations in the transport affect aspects of the time - mean climate.
These aquaplanet simulations are sometimes run with prescribed sea surface temperatures (SSTs) and sometimes with prescribed heat flux through the surface (usually realized by running the atmosphere over a «slab ocean» s saturated surface with some heat capacity, and specifying an «oceanic heat flux» into or out of the slab.
A standard simplification is
an aquaplanet model in which the surface is uniform and «ocean» covered», ie water - saturated, typically with no seasonal cycle.