NPZ-model/Physical-Processes.md

@@ -22,12 +22,11 @@ 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)  
 
-
 ```math
 k_{d} = 0.24 + 0.036 \cdot TPM
 ```
 
-Where the background extinction is 0.25 m<sup>-1</sup> (including the extinction due to dissolved humic substances) and TPM is the concentration of suspended sediment particles (mg l<sup>-1</sup>)
+Where the background extinction is 0.24 m<sup>-1</sup> (including the extinction due to dissolved humic substances) and TPM is the concentration of suspended sediment particles (mg l<sup>-1</sup>)
 
 The average light ($`I_{avg}`$) is calculated by integration of the function over the whole water column divided over the waterdepth.