I am trying to run a Delft3D FM hydrodynamic model with the composite
heat flux model. However, this is not working for me, I specify
initial conditions, boundaries, and I have created a meteo file
including air temperature (degree C), humidity (%), cloud cover (%),
and Solar radiation (W/m2).
In shallow waters (or possibly only areas with flooding and drying, I
have not been able to establish that), the temperature sky rockets, it
increases from the initial 8 degrees to 50 degrees in just a few hours
(the model covers Wales in the winter). Even if I do not include the
solar radiation or set it to 0 W/m2, this happens. Has anyone
experienced this, and is there a solution/what am I doing wrong?
Any hints would be appreciated
Update: It appears to be an issue with flooding/drying. It appears
that the ocean model / composite temperature model does not recognise
the same drying cut-off as the hydrodynamic model, and therefor keeps
heating or cooling cells that the hydrodynamic model considers dry.
These cells respond very quickly, and the excess heat
"bleeds" in to the model domain.
Is there a way of telling the composite temperature model to
ignore cells with water level below a certain threshold?
The solar radiation, doen't not only affect the water, but also the
soil. The soil observes the solar radiation, warms up, and reflects
partly this energy by means of diffusion to the water.
We think this process affects both wet and dry cells. The soil of wet
cells receive the solar radiation less than the dry cells, because of
absorption of the radiation partly by the water. However, the dry
cells are fully exposed to such radiation, and they may show a higher
temperature than those of wet areas.
Hi Trine! I am having a similar problem as you. The ocean
model keeps heating/cooling some cells that hydrodynamic model
considers dry. Did you solve it? Thank you in advance Agustin