Explicit planktic calcifiers in the University of Victoria Earth System Climate Model
K. F. Kvale1,2, K. J. Meissner1,2, D. P. Keller3, M. Eby4, and A. Schmittner51Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia 2ARC Centre of Excellence for Climate System Science, Sydney, NSW, Australia 3GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany 4University of Victoria, Victoria, BC, Canada 5College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR, USA
Received: 30 Jan 2014 – Accepted for review: 04 Mar 2014 – Discussion started: 14 Mar 2014
Abstract. Marine calcifiers as a plankton functional type (PFT) are a crucial part of the global carbon cycle, being responsible for much of the carbon export to the deep ocean entering via biological pathways. Deep ocean carbon export through calcifiers is controlled by physiological, ecological and biogeochemical factors. This paper describes the implementation of a phytoplankton coccolithophore PFT in the University of Victoria Earth System Climate Model (UVic ESCM), and improvements to the representation of zooplankton calcification and carbon export therein. The described modifications improve model performance with respect to carbon and nutrient fluxes. Primary production, export production, particulate organic carbon and calcite fluxes all fall within independent estimates.
Kvale, K. F., Meissner, K. J., Keller, D. P., Eby, M., and Schmittner, A.: Explicit planktic calcifiers in the University of Victoria Earth System Climate Model, Geosci. Model Dev. Discuss., 7, 1709-1758, doi:10.5194/gmdd-7-1709-2014, 2014.