PNWTOX numerical model - biogeochemistry

biological model - (KA Davis et al. 2014 , Siedlecki et al. 2015 , and NS Banas et al. 2009)

Figure 1. PNWTOX biological model configuration

The biological model is an NPZD model designed by N Banas and implemented by N Banas and K Davis (see KA Davis et al. 2014, NS Banas et al. 2009, and NS Banas' website for more information) Model parameters are constrained by extensive in-situ measurements listed on this diagram.

dissolved oxygen submodel - (Siedlecki et al. 2015)

Figure 2. PNWTOX dissolved oxygen submodel configuration

The dissolved oxygen submodel incorporates Oxygen into the NPZD model. This addition also led to the addition of a second detrital pool in the NPZD portion of the model. This addition to the model was designed and implemented by SA Siedlecki and NS Banas and is descrived in Siedlecki et al. 2015. Model parameters again are constrained by extensive in-situ measurements listed on this diagram.

forcing & model set-up

In order to incorporate the biogeochemical model, boundary and initial conditions had to be developed along with defining the biogeochemical model parameters such as phytoplankton growth rate

biogeochemical parameters (such as growth rate, grazing rate, etc.) were chosen based on extensive observations listed in the above diagrams
nitrate boundary and initial conditions were implemented by employing a nitrate:salinity relationship based on an all available data in the offshore region
oxygen boundary and initial conditions were implemented similarly by employing an oxygen:salinity relationship based on an all available data in the offshore region
phytoplankton and zooplankton were set to a seed stock at the boundaries