MODELS

 
 
 

The current version of the ocean circulation inverse model (OCIM) as described in DeVries (2014) is available upon request to tdevries at geog dot ucsb dot edu. Model constraints include temperature, salinity, radiocarbon , and CFCs. The model is configured on an Arakawa B grid with 2º horizontal resolution and 24 unevenly spaced vertical levels ranging from 30 m near the surface to 500 m at depth. Sub-gridscale parameterizations are used for unresolved eddy-diffusive fluxes, including a KPP scheme for the surface mixed layer and an isoneutral diffusion scheme for background eddy stirring. Model circulation is steady-state without a seasonal cycle. Future versions of the model will include additional tracer constraints and a seasonal cycle, with an expected release date of 2018.

 

Ocean circulation inverse model (OCIM)

Movie showing the pathways and timescales of North Atlantic deep water ventilation.

(Top) The age (time since last surface contact) of waters in the deep ocean (below 2000 m).

(Bottom) The time until next surface contact of waters in the deep ocean.

Satellite-driven implicit ecosystem model (SIMPLE)

Our group maintains a satellite-driven implicit ecosystem model (SIMPLE) that provides a climatological estimate of the state of the ocean’s biological pump from an assimilation of satellite and oceanographic tracer data (DeVries and Weber, 2017). Results from this model can be downloaded here: SIMPLE_TRIM_output.nc (warning: large file ~ 400 MB).