8.5 Atmospheric Heat Exchange
8.5.2 Description
The setup of atmospheric heat exchange is configured within the Advection Dispersion simulation class (see Section 7.7). The ST simulation class can influence shortwave radiation extinction as described in Section 8.5.3.
8.5.3 Shortwave Radiation Model
If heat (see Section 7.7) and sediment are simulated, the shortwave radiation field computed within the water column can be optionally modified by total sediment concentration by including the Shortwave Radiation Sediment Extinction Coefficients command (see Table 8.3). In particular, modifiers in units of /(m (mg/L)) for each of the four shortwave radiation bands (PAR, UVA, UVB and NIR) can be set in the TUFLOW FV control file as shown in the example syntax block. Shortwave radiation extinction due to sediment is computed by multiplying each of these modifiers by the local total suspended sediment concentration and adding the resultant extinction coefficients to that of background conditions.
| Command | Description |
|---|---|
| Shortwave Radiation Sediment Extinction Coefficients | Optional - Sets the extinction coefficient for each shortwave radiation fraction due to the presence of suspended sediment (PAR, UVA, UVB and NIR). |