Problem in tmrt calculation due to D and N

[difruscj]

Hello everyone!

I have a problem in tmrt calculations.
I calculated the tmrt with the UMEP plugin on QGIS and I find strange results. During the day there is a discontinuity in the tmrt results which are influenced by the D and N (which I imagine to be Day and Night). I have no control on that, the N influences the values from midnight to 1 pm and the D influences the values from 2 pm to 11 pm. There is a discontinuity in the results because the tmrt in period N is much lower than period D. This discontinuity can go up to a difference of 10°C, which makes a lot of difference in just 1 hour. I don't understand how D and N vary my tmrt results. Can you help me to control the D and N of my tmrt rasters?

Thank you, any help would be helpful!

[biglimp]

This sounds like a timing issue somewhere between:

1. the UTC settings,
2. timezone in the meteorological file
3. and/or the lat, lon as well as CRS of your DSM

Have a look and see if you have them correct. Remember that UTC setting should be set according to the timezone in the meteorological file.

[difruscj]

Thank you for your help!