djloha.blogg.se - Simple grids on spheres

#Simple grids on spheres portable#

Sadourny, R., Conservative finite-difference approximations of the primitive equations on quasi-uniform spherical grids.

Jablonowski, Adaptive grids in weather and climate modeling, Ph.D. van Leer, Adaptive grids in climate modeling: Concept and first results, Eos Trans. Stout, Parallel adaptive blocks on a sphere, in: 11th SIAM Conference on Parallel Processing for Scientific Computing, 2001. International Journal of High Performance Computing Applications.

#Simple grids on spheres portable#

and Shen, B.-W., Cross-platform performance of a portable communications module the nasa finite volume general circulation model. and Hess, P., Characteristics of atmospheric transport using three numerical formulations for atmospheric dynamics in a single GCM framework.

Rasch, P.J., Coleman, D.B., Mahowald, N., Williamson, D.L., Lin, S.-J., Boville, B.A.

and Zhang, M., The formulation and atmospheric simulation of the community atmosphere model: CAM3.

Collins, W.D., Rasch, P.J., Boville, B.A., Hack, J.J., McCaa, J.R., Williamson, D.L., Briegleb, B., Bitz, C., Lin, S.-J.

Delworth, T.L., GFDL's CM2 global coupled climate models - Part I: Formulation and simulation characteristics.

Chang, The 0.125 degree finite-volume general circulation model on the NASA columbia supercomputer: Preliminary simulations of mesoscale vortices, Geophysical Research Letters 33 (L05801) (2006). Radakovich, Hurricane forecasting with the high-resolution NASA finite-volume general circulation model, Geophysical Research Letters 32 (L03807) (2006). and Yeh, K.-S., Global weather prediction and high-end computing at NASA.

Lin, S.-J., A "vertically Lagrangian" finite-volume dynamical core for global models.

It is also shown that a simple non-orthogonal extension to the transport equation enables the use of the highly non-orthogonal and computationally more efficient gnomonic grid with acceptable accuracy. In fact, the more uniform version of the quasi-orthogonal cubed-sphere grids provided better overall accuracy than the most orthogonal (and therefore, much less uniform) conformal grid. It is found that slight deviations from orthogonality on the modified cubed-sphere (quasi-orthogonal) grids do not negatively impact the accuracy. The advection tests revealed comparable or better accuracy to those of the original latitudinal-longitudinal grid implementation. We explore the impact of grid non-orthogonality on advection tests over the corner singularities of the cubed-sphere grids, using some variations of the transport scheme, including the piecewise parabolic method with alternative monotonicity constraints. Advection tests with prescribed winds are used to evaluate a variety of cubed-sphere projections and grid modifications including the gnomonic and conformal mappings, as well as two numerically generated grids by an elliptic solver and spring dynamics. The performance of a multidimensional finite-volume transport scheme is evaluated on the cubed-sphere geometry.