error in SOLWEIG

[thorntree2]

Hi, I'm trying to get tmrt using SOLWEIG. I already got SOLWEIG of 5m, 25m resolution with the same meteorological data and same coordinate system. However, only 50m resolution makes this error. What is the problem? Please help me.

The error contents in QGIS are as follows.

2020-10-06T15:36:10 CRITICAL EXCEPTION IN C:/Users/user/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\SOLWEIG\solweigworker.py, LINE 286 "timeaddW, timeaddN, timestepdec, Tgmap1, Tgmap1E, Tgmap1S, Tgmap1W, Tgmap1N, CI, TgOut1, diffsh, ani)" ERROR MESSAGE: local variable 'weightsumwall_first' referenced before assignment

And this is reference document of 50m resolution.

This file provides run settings for the SOLWEIG run initiated at: Tue, 06 Oct 2020 15:36:10 Version: SOLWEIG v2019a

SURFACE DATA Digital surface model (DSM): D:/02_WORK/01_GWJU/04_SOLWEIG/81_Sample/01_raster/dsm50 Model domain: rows = 504, columns = 730 Projected referece system: unnamed Geographical coordinate system: Unknown datum based upon the GRS 1980 ellipsoid Latitude: 35.04092742931634 Longitude: 126.63420126809487 UTC: 9 Vegetation scheme inactive Landcover scheme inactive

DEM used to identify buildings METEOROLOGICAL FORCING DATA Meteorological file: D:/02_WORK/01_GWJU/04_SOLWEIG/10_Data/met_190729.txt

HUMAN EXPOSURE PARAMETERS Absorption, shortwave radiation: 0.7 Absorption, longwave radiation: 0.95 Posture of human body: Standing ENVIRONMENTAL PARAMETERS Albedo of walls: 0.2 Albedo of ground (not used if land cover scheme is active): 0.15 Emissivity (walls): 0.9 Emissivity of ground (not used if land cover scheme is active): 0.95

ADDITIONAL SETTINGS Human considered as a standing cylinder Isotropic sky

This is reference document of 25m resolution.

This file provides run settings for the SOLWEIG run initiated at: Tue, 06 Oct 2020 15:59:03 Version: SOLWEIG v2019a

SURFACE DATA Digital surface model (DSM): D:/02_WORK/01_GWJU/04_SOLWEIG/01_Raster/03_DSM/dsm_25m Model domain: rows = 1007, columns = 1457 Projected referece system: unnamed Geographical coordinate system: Unknown datum based upon the GRS 1980 ellipsoid Latitude: 35.04092742931634 Longitude: 126.63420126809487 UTC: 9 Vegetation scheme inactive Landcover scheme inactive

DEM used to identify buildings METEOROLOGICAL FORCING DATA Meteorological file: D:/02_WORK/01_GWJU/04_SOLWEIG/10_Data/met_190729.txt

HUMAN EXPOSURE PARAMETERS Absorption, shortwave radiation: 0.7 Absorption, longwave radiation: 0.95 Posture of human body: Standing ENVIRONMENTAL PARAMETERS Albedo of walls: 0.2 Albedo of ground (not used if land cover scheme is active): 0.15 Emissivity (walls): 0.9 Emissivity of ground (not used if land cover scheme is active): 0.95

ADDITIONAL SETTINGS Human considered as a standing cylinder Isotropic sky

I don't know why the 25m resolution has no errors, and the 50m resolution has error. Please help me...

[biglimp]

This model is not really designed to run with that course resolution. Then the separation between buildings and street will become difficult. That is probably what caused your error. I have no really good solution. Why do you want to use such large pixels?

[thorntree2]

I wanted to consider the calculation time and accuracy of the model according to resolution. After hearing your opinion, I think you are right. It seems to be unnecessary consideration. Thank you for your comment. But I am still just curious. Why does the model run when the UTC is 0? Although the results are all wrong. When the UTC is 9, the model doesn't run at all. What is the reason for Python's error? Even if it is a wrong result, can't I run the model?

[biglimp]

Since you didn't provide an error message it is hard for me to comment. However, the model make use of different code depending if day or night time. I assume that this error is caused by this, i.e. that setting it to UTC 9 you either switch from day to night or vie versa. UTC is used to calculate sun position.

As this is no issue I will close the this. Feel free to continue the discussion in the email list.