Newly developed model code and scripts for the coupling of CESM1.2 and MEDUSA ...

• Main Authors: Kurahashi-Nakamura, Takasumi, Paul, André, Munhoven, Guy, Merkel, Ute, Schulz, Michael
• Format: Dataset
• Language: English
• Published: PANGAEA 2019
• Subjects: climate simulation; Earth System Models; sediment models; File name; File format; File size; Uniform resource locator/link to file; Medusa; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.905821; https://doi.pangaea.de/10.1594/PANGAEA.905821

We developed a coupling scheme for the Community Earth System Model version 1.2 (CESM1.2) and the Model of Early Diagenesis in the Upper Sediment of Adjustable complexity (MEDUSA), and explored the effects of the coupling on solid components in the upper sediment and on bottom seawater chemistry by comparing the coupled model's behaviour with that of the uncoupled CESM having a simplified treatment of sediment processes. CESM is a fully-coupled atmosphere-ocean-sea ice-land model and its ocean component (the Parallel Ocean Program version 2, POP2) includes a biogeochemical component (BEC). MEDUSA was coupled to POP2 in an off-line manner so that each of the models ran separately and sequentially with regular exchanges of necessary boundary condition fields. This development was done with the ambitious aim of a future application for long-term (spanning a full glacial cycle; i.e., ~10^5 years) climate simulations with a state-of-the-art comprehensive climate model including the carbon cycle, and was motivated ... : Supplement to: Kurahashi-Nakamura, Takasumi; Paul, André; Munhoven, Guy; Merkel, Ute; Schulz, Michael (2020): Coupling of a sediment diagenesis model (MEDUSA) and an Earth system model (CESM1.2): a contribution toward enhanced marine biogeochemical modelling and long-term climate simulations. Geoscientific Model Development, 13(2), 825-840 ...