Spherical Harmonic Transform Algorithms (2009)
A collection of MATLAB classes for computing and using spherical harmonic transforms is presented. Methods of these classes compute differential operators on the sphere and are used to solve simple...
CARTESIAN METHODS FOR THE SHALLOW WATER EQUATIONS ON A SPHERE (2008)
John B. Drake, Paul N. Swarztrauber, David L. Williamson
This report has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific
The Community Climate System Model (CCSM3) is (2008)
George R Carr, Ncar Matthew, J Cordery, John B Drake, Michael W Ham, Forrest M Hoffman, ...
ABSTRACT: The Community Climate System Model (CCSM3) is the primary model for global climate research in the United States and is supported on a variety of computer systems. We present some of our...
P. M. Papadopoulos, George R. Carr, Matthew J. Cordery, John B. Drake, Michael W. Ham, Forrest M. Hoffman, ...
(FaMOUS): A prototype interactive hypertext-based financial planning and reporting system. Technical
P. M. Papadopoulos, George R. Carr, Matthew J. Cordery, John B. Drake, Michael W. Ham, Forrest M. Hoffman, ...
(FaMOUS): A prototype interactive hypertext-based financial planning and reporting system. Technical
Gamma Vertical Coordinate, John B. Drake, Paul N. Swarztrauber, David L. Williamson
A generalized meteorolgoical coordinate system is developed which can support a continuous isentropic- oe vertical coordinate. Model equations, discretization and solution algorithms are presented...
Cartesian Methods for the Shallow Water Equations on a Sphere (2007)
Paul Swarztrauber, Dave Williamson, John B. Drake
A Cartesian method is used in conjunction with the shallow water equations and a spatial discretization based on the Cartesian form of the spherical harmonics. Updates of the momentum equation are...
High Order Cartesian Method for the Shallow (2007)
Water Equations On, John B. Drake, William Putman, Paul N. Swarztrauber, David L. Williamson
The shallow water equations in a spherical geometry are solved using a 3-dimensional Cartesian method. Spatial discretization of the 2dimensional, horizontal dierential operators is based on the...
Overview of the software design of the Community Climate System Model (2005)
John B. Drake, Philip W. Jones, George R. Carr, John B. Drake, Philip W. Jones, George R. Carr
The Community Climate System Model (CCSM) is a computer model for simulating the Earth’s climate. The CCSM is built from four individual component models for the atmosphere, ocean, land surface,...
Performance portability in the physical parameterizations of the Community Atmosphere Model (2005)
Patrick H. Worley, John B. Drake
Community models for global climate research, such as the Community Atmospheric Model, must perform well on a variety of computing systems. Supporting diverse research interests, these...
Overview of the software design of the Community Climate System Model (2005)
John B. Drake, Philip W. Jones, George R. Carr
The Community Climate System Model (CCSM) is a computer model for simulating the Earth’s climate. The CCSM is built from four individual component models for the atmosphere, ocean, land surface,...
Performance portability in the physical parameterizations of the Community Atmosphere Model (2005)
Patrick H. Worley, Patrick H. Worley, John B. Drake, John B. Drake
Community models for global climate research, such as the Community Atmospheric Model, must perform well on a variety of computing systems. Supporting diverse research interests, these...
Components, the common component architecture, and the climate/weather/ocean community (2004)
J. Walter Larson, Boyana Norris, Everest T. Ong, David E. Bernholdt, John B. Drake, Wael R. Elwasif, ...
Earth system and environmental models present the scientist/programmer with multiple challenges in software design, development, and maintenance, overall system integration, and performance. We...
Performance Tuning and evaluation of a parallel community climate model (1999)
John B. Drake, Steve Hammond, Rodney James, Patrick H. Worley
The Parallel Community Climate Model (PCCM) is a message-passing parallelization of version 2.1 of the Community Climate Model (CCM) developed by researchers at Argonne and Oak Ridge National...
Cartesian Methods for the Shallow Water Equations on a Sphere (1999)
John B. Drake, Paul N. Swarztrauber, David L. Williamson
vii 1 INTRODUCTION 1 2 THE SHALLOW WATER EQUATIONS ON A SPHERE 3 2.1 ROTATIONAL FORM OF THE MOMENTUM EQUATION . . . . . . . . . . . . 5 3 LOCAL CARTESIAN SPECTRAL APPROXIMATION 7 4 DISCRETE OPERATOR...
John B. Drake, Matthew P. Coddington
A 3-D Cartesian method for integration of partial differential equations on a spherical surface is developed for parallel computation. The target computer architectures are distributed memory,...
Cartesian Methods for the Shallow Water Equations on a Sphere (1997)
John B. Drake, Paul N. Swarztrauber, David L. Williamson
The shallow water equations in a spherical geometry are solved using a 3-dimensional Cartesian method. Spatial discretization of the 2dimensional, horizontal differential operators is based on the...
Parallelizing The Spectral Transform Method (1992)
Patrick H. Worley, John B. Drake
. The spectral transform method is a standard numerical technique used to solve partial differential equations on the sphere in global climate modeling. In particular, it is used in CCM1 and CCM2,...
Ganguly, Auroop R., Steinhaeuser, Karsten, Erickson, David J., Branstetter, Marcia, Parish, Esther S., Singh, Nagendra, ...
Generating credible climate change and extremes projections remains a high-priority challenge, especially since recent observed emissions are above the worst-case scenario. Bias and uncertainty...