Skip to content
Snippets Groups Projects

Changes

Page history
  • New page
  • Templates
    • Update Physical Processes authored by Wijsman, Jeroen's avatar Wijsman, Jeroen
    Hide whitespace changes
    Inline Side-by-side
    NPZ-model/Physical-Processes.md
    View page @ cab2c376
    ......@@ -19,8 +19,9 @@ The underwater light conditions is depending on the the irradiation and the exti
    I_{z} = I_{0} \cdot e^{-k_{d} \cdot z}
    ```
    The extinction coefficient ($`k_{d}`$) is depending on the amount of Total Particulate Matter (TPM) in the water that varies over the season (described by the [cosine function](Data#suspended-solids)). The extinction coefficient is calculated from the TPM concentration using a simplified version of the function that is used by Los and Wijsman (2007), based on Van Gils and Tatman (2003).
    Los and Wijsman (2007) use the relation from Van Gils and Tatman (2003)
    The extinction coefficient ($`k_{d}`$) is depending on the amount of Total Particulate Matter (TPM) in the water that varies over the season (described by the [cosine function](Data#suspended-solids)). The extinction coefficient is calculated from the TPM concentration using a simplified version of the function that is used by Los and Wijsman (2007)[^1395], based on Van Gils and Tatman (2003)[^3230].
    Los and Wijsman (2007)[^1395] use the relation from Van Gils and Tatman (2003)[^3230].
    ```math
    k_{d} = 0.24 + 0.036 \cdot TPM
    ......@@ -62,4 +63,8 @@ Flux_{i,j} = \frac{Ex_{i,j}\cdot(C_{j}-C_{i})}{Vol_{i}}
    Where $`Flux_{i,j}`$ is the increase in concentration in compartment $`i`$ [mmol-N m<sup>-3</sup> d<sup>-1</sup>] due to the water exchange between compartment $`i`$ and $`j`$. $`Ex_{i,j}`$ is the exchange rate between compartment $`i`$ and $`j`$ [m<sup>3</sup> d<sup>-1</sup>]. $`C_{i}`$ and $`C_{j}`$ are the concentrations of the state variables in compartment $`i`$ and $`j`$ [mmol-N m<sup>-3</sup>], respectively. $`Vol_{i}`$ is the volume of compartment $`i`$ [m<sup>3</sup>].
    [top](NPZ model/Physical Processes)
    \ No newline at end of file
    [top](NPZ model/Physical Processes)
    [^1395]: Los, F. J. en J. W. M. Wijsman (2007) Application of a validated primary production model (BLOOM) as a screening tool for marine, coastal and transitional waters. Journal of Marine Systems 64: 201-215.[link](https://doi.org/10.1016/j.jmarsys.2006.03.009)
    [^3230]: Van Gils, J. A. and S. Tatman (2003) Light penetration in the water column. WL | Delft Hydraulics, Report.