Hi Miguel!
Thank you for your reply. It is quite a dirty way to solve it. One problem is
that the IR variable won't be calculated correctly if there is no input of
cloudiness. I have measurements also of this variable, so if I can use another
optional input variable, such as wind direction and make a dirty substitute in
the __set_theoretical_flux function, it may work. I may need to scale the
radiation so it won't exceed 360 degrees, ehhmm W/m2 .
Do you think it will work?
Since most atmospheric forecast models can output solar radiation and infrared
radiation directly, it could be useful to have that option too, instead of just
cloudiness.
Regards,
Esben
Miguel Tremblay <[EMAIL PROTECTED]> skrev: Esben Almqvist wrote:
> Dear Metro members,
>
> I am planning to test the sensitivity of the METRo model to radiation.
> I would like to use input of measured radiation instead of predicted
> cloudiness as input for the radiation part of the model. Thereby I
> will be able to see how the model will perform with a "perfect"
> radiation component. Can that be done without too much change of the code?
> Thank you in advance!
>
>
> Best Regards,
> Esben
>
>
Hi Esben,
Here what I suggest to test your sensitivity.
1- Put your solar flux in W/m^2 in the cloud cover field () in the
atmospheric forecast file.
2- In the file metro_preprocess_fsint.py, go in the function
__set_theoretical_flux. It is a big function that compute the solar and
infra-red fluxes based on the cloud cover. If you look at the end of the
function, this is where both fluxes are written in the METRo matrix to
perform the forecast. Put everything you need in comments and manage to
put exactly what was in the CC field instead of all the computation.
3- Look at the road forecast.
This is a quick and dirty way to perform your test. I did not try it,
but I think it is a good starting point. I suspect there could be a
problem in the coupling phase.
If you need to implement it for real in METRo, not only for testing
purpose, we will manage to do it in a more elegant way.
Keep us inform of your results,
Miguel
--
Miguel Tremblay
Physicien - Physicist
Centre météorologique canadien - Canadian meteorological centre (CMC)
Environnement Canada - Environment Canada
http://www.ec.gc.ca/
2121 Trans-Canada N. Suite 228 Téléphone/Phone: 514-421-4729
Dorval, Québec Fax: 514-421-4679
CANADA H9P 1J3 courriel/email: [EMAIL PROTECTED]
Esben
Heja Sverige i OS
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