Hi Miguel!
As far as I know, there are no RWIS-stations equipped with sensors for
radiation, except research stations of course. However, as a scientist I
maintain that it would be beneficial to have that kind of sensors installed at
the stations. Now, the usability of the sensors is limited since they cannot
give a forecast, only observation data. You could of course adjust your
radiation forecast to fit the data from the radiation sensors before making a
surface temperature forecast. For comparison it is of course very good to have
this kind of sensor. Radiation is as I see it the most important driving
variable of the model.
I will see what I find! I can compare the output of METRo's radiation with that
from the atmospheric forecast model and see which matches the measurements best.
Regards,
Esben
Miguel Tremblay <[EMAIL PROTECTED]> skrev: Esben Almqvist wrote:
> 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?
Good idea. I don't think there is any restriction or check made on wind
direction field, you can put anything you want.
>
> 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.
Yes but we have to know if:
1- METRo produce a good road forecast doing this way (I hope you'll be
able to answer this);
2- If it could be useful. Do you know if there is a lot of RWIS station
that possess and use this sensor?
--
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
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