PET and UTCI calculation

[SimoneBeltramino]

Hello, I would like to know how SOWEIG calculates PET and UTCI indexes.
What I need are the equations used by the tool.

Thank you so much in advance.
Simone

[biglimp]

Here you have info on UTCI: http://www.utci.org/
Regarding PET, I would take a look at: https://link.springer.com/article/10.1007/s004840050118

[SimoneBeltramino]

One last thing, I can't find the landcoverclasses_v2016a.txt on my pc. Do you know if is available somewhere?

[biglimp]

If you are using windows and hae installed UMEP the search path should look something like this: C:\Users\ yourusername \AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins\UMEP\SOLWEIG

[SimoneBeltramino]

Thank you, I managed to solve everything! I take advantage of the fact that you are very helpful and kind to ask you three more things.

1. Tmrt is calculated at what height? At ground level?
2. Modifying the parameters inside the text file landcoverclasses_v2016a.txt is it possible to make simulations with different values of emissivity and albedo?
3. Is there a limit to the points of interest that can be evaluated? I tried with just under a dozen points and it gave me this error "POI attribute with unique values must be selected".

Thank you very much,
Simone

[biglimp]

1. 1.1 meter above ground
2. yes
3. It should be possible to have as many POIs as you want but I have not tried with more than 10.

[elidamd]

Following this track, this paper (DOI 10.1007/s00704-010-0382-8) mentions future developments for Solweig 3.0 with the inclusion of user defined properties such as albedo, and emissivity, in a grid.
Will this parametrization be implemented?
Thanks!

[biglimp]

Yes, in http://dx.doi.org/10.1007/s00484-016-1135-x.

[elidamd]

Thanks! I will test changing parameters in the text file.
Would it be possible to increase the range of surface materials, if both text file and land cover raster correspond?
Or the model is limited to the 7 preset?

[biglimp]

Yes, you should be able to have as many as you like.