Preprints
https://doi.org/10.5194/egusphere-2024-72
https://doi.org/10.5194/egusphere-2024-72
28 Feb 2024
 | 28 Feb 2024
Status: this preprint is open for discussion.

Evaluation of CMIP6 Models Performance in Simulating Historical Biogeochemistry across Southern South China Sea

Winfred Marshal, Jing Xiang Chung, and Mohd Fadzil Bin Mohd Akhir

Abstract. This study evaluates the ability of Earth System Models (ESMs) from the Coupled Model Intercomparison Project Phase 6 (CMIP6) to simulate biogeochemical variables in the southern South China Sea (SCS). The analysis focuses on chlorophyll, phytoplankton, nitrate, and oxygen at annual and seasonal scales. The models' performance is assessed against Copernicus Marine Environment Monitoring Service (CMEMS) data using statistical metrics such as the Taylor diagram and Taylor skill score. The results show that the models generally capture the observed spatial patterns of biogeochemical variables but exhibit varying degrees of overestimation or underestimation. The performance of the models is also influenced by the season, with some models showing better performance during the southwest monsoon than the northeast monsoon. Overall, the top five best-performing models for biogeochemical variables are MIROC-ES2H, GFDL-ESM4, CanESM5-CanOE, MPI-ESM1-2-LR, and NorESM2-LM. The findings of this study have implications for researchers and end-users of the datasets, providing guidance for model improvement and understanding the impacts of climate change on the SCS ecosystem.

Winfred Marshal, Jing Xiang Chung, and Mohd Fadzil Bin Mohd Akhir

Status: open (until 17 Apr 2024)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
Winfred Marshal, Jing Xiang Chung, and Mohd Fadzil Bin Mohd Akhir
Winfred Marshal, Jing Xiang Chung, and Mohd Fadzil Bin Mohd Akhir

Viewed

Total article views: 154 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
125 24 5 154 3 2
  • HTML: 125
  • PDF: 24
  • XML: 5
  • Total: 154
  • BibTeX: 3
  • EndNote: 2
Views and downloads (calculated since 28 Feb 2024)
Cumulative views and downloads (calculated since 28 Feb 2024)

Viewed (geographical distribution)

Total article views: 160 (including HTML, PDF, and XML) Thereof 160 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 12 Apr 2024
Download
Short summary
This study stands out for thoroughly examining CMIP6 ESMs ability to simulate biogeochemical variables in the southern South China Sea, an economically important region. It assesses variables like chlorophyll, phytoplankton, nitrate and oxygen on annual and seasonal scales. While global assessments exist, this study addresses a gap by objectively ranking 13 CMIP6 ocean biogeochemistry models' performance at a regional level, focusing on replicating specific observed biogeochemical variables.