Enhancing reproducibility of numerical simulation result on the C-Coupler platform

Abstract

Abstract. Reliable numerical simulation plays a critical role in climate change study. The reliability includes the technical reproducibility, i.e. bit-identical results of numerical simulation can be reproduced. It is very important for model development and scientific researches but has not been satisfactorily addressed yet so far. To address the technical reproducibility, necessary information about it is firstly analyzed, and how to enhance it on the Community Coupler (C-Coupler) platform, a uniform runtime environment that can operate various kinds of model simulations in the same manner, is then detailed. Moreover, we share a series of experiences and suggestions with scientists and model groups for achieving the technical reproducibility. We believe that, the proposed implementations, experiences and suggestions can be easily extended to other model platforms, and can prospectively advance model development and scientific researches in future.

C-Coupler1: a Chinese community coupler for Earth system modeling

“…GAMIL2-sole is a stand-alone component model configuration of the atmosphere model GAMIL2 (Li et al, 2013b), the atmosphere component in FGOALS-g2, which participated in the Atmosphere Model Intercomparison Project (AMIP) in CMIP5. GAMIL2-CLM3 is a coupled model configuration consisting of GAMIL2 and the land surface model CLM3 (Oleson et al, 2004). MASNUMsole is a stand-alone component model configuration of the wave model MASNUM (Yang et al, 2005).…”

“…The most unique feature of the C-Coupler platform is the enhancement for reproducibility of bitwise-identical simulation result for Earth system modeling. Please refer to Liu et al (2014b) for details.…”

C-Coupler1: a Chinese community coupler for Earth System Modelling

“…The most unique feature of the C-Coupler platform is the enhancement for reproducibility of bitwise-identical simulation result for Earth system modeling. Please refer to Liu et al (2014b) for details. We note that the steps similar to the above 1, 3, and 4 are always required when coupling a new component model with other couplers.…”