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10-km Mesh Meso-scale Resolving Simulations of the Global Atmosphere on the Earth Simulator - Preliminary Outcomes of AFES (AGCM for the Earth Simulator) -

In early March of 2002, a massively-parallel-vector supercomputer, the Earth Simulator, came into operation, providing a unique opportunity to perform simulations of the general circulation of the…

Significance of a Midlatitude SST Frontal Zone in the Formation of a Storm Track and an Eddy-Driven Westerly Jet*

Abstract In a set of idealized “aquaplanet” experiments with an atmospheric general circulation model to which zonally uniform sea surface temperature (SST) is prescribed globally as the lower…
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Mesoscale spectrum of atmospheric motions investigated in a very fine resolution global general circulation model

[1] The horizontal spectrum of wind variance, conventionally referred to as the kinetic energy spectrum, is examined in experiments conducted with the Atmospheric GCM for the Earth Simulator (AFES)…
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Explicit global simulation of the mesoscale spectrum of atmospheric motions

The horizontal spectrum of kinetic energy in the upper troposphere in experiments conducted with the Atmospheric GCM for the Earth Simulator (AFES) global spectral general circulation model is…
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On the importance of midlatitude oceanic frontal zones for the mean state and dominant variability in the tropospheric circulation

Observations indicate that midlatitude weather systems are organized into “storm tracks” near oceanic frontal zones with pronounced sea‐surface temperature (SST) gradients. A pair of atmospheric…
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An improved PDF cloud scheme for climate simulations

An efficient grid‐scale cloud scheme for climate simulation is implemented in the atmospheric general circulation model for the Earth Simulator (AFES). The new cloud scheme uses statistical partial…
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A 26.58 Tflops Global Atmospheric Simulation with the Spectral Transform Method on the Earth Simulator

A spectral atmospheric general circulation model called AFES (AGCM for Earth Simulator) was developed and optimized for the architecture of the Earth Simulator, well surpassing that of conventional weather/climate applications having just 25-50% efficiency even on vector parallel computers.
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Description of AFES 2: Improvements for High-Resolution and Coupled Simulations

Improvements are attributable to a better vertical structure of temperature in the tropics due to more realistic estimation of mixing of the momentum, temperature, and moisture by the Emanuel scheme.
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The Aqua-Planet Experiment (APE): CONTROL SST Simulation

Climate simulations by 16 atmospheric general circulation models (AGCMs) are compared on an aqua-planet, a water-covered Earth with prescribed sea surface temperature varying only in latitude. The…
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Conservative Semi-Lagrangian Transport on a Sphere and the Impact on Vapor Advection in an Atmospheric General Circulation Model

Abstract A conservative semi-Lagrangian scheme with rational function for interpolation is implemented in spherical geometry and tested in an atmospheric general circulation model (AGCM). The new…
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