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Discussion papers | Copyright
https://doi.org/10.5194/gmd-2018-27
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 12 Feb 2018

Model description paper | 12 Feb 2018

Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal Geoscientific Model Development (GMD) and is expected to appear here in due course.

C-Coupler2: a flexible and user-friendly community coupler for model coupling and nesting

Li Liu1,2, Cheng Zhang1,2, Ruizhe Li1,2, and Bin Wang1,2,3 Li Liu et al.
  • 1Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science (CESS), Tsinghua University, Beijing, China
  • 2Joint Center for Global Change Studies (JCGCS), Beijing, China
  • 3State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Flui d Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China

Abstract. The Chinese C-Coupler (Community Coupler) coupler family aims primarily to develop coupled models for weather forecasting and climate simulation and prediction. It is targeted to serve various coupled models with flexibility, user-friendliness, and extensive coupling functions. C-Coupler2, the latest version, includes a series of new features in addition to those of C-Coupler1, including a common, flexible, and user-friendly coupling configuration interface that combines a set of application programming interfaces and a set of XML formatted configuration files, capability of model coupling within one executable or the same subset of MPI (Message Passing Interface) processes, flexible and automatic coupling generations that enable coupling generation at any time for any subset of component models, dynamic 3-D coupling that enables convenient coupling of fields on 3-D grids with time-evolving vertical coordinate values, non-blocking data transfer, facilitation for model nesting, facilitation for increment coupling, and debugging capability. C-Coupler2 is ready for use to develop various coupled or nested models. It has passed a number of test cases derived from a sample model with model coupling and nesting, and with various MPI process layouts between component models, and has already been used in several real coupled models.

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Li Liu et al.
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Latest update: 18 Aug 2018
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C-Coupler2 is a new version of C-Coupler with a series of new enhancements. Now it is ready for usage and its source code will be publicly available soon.
C-Coupler2 is a new version of C-Coupler with a series of new enhancements. Now it is ready for...
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