Urban Weather Generator - Comparison of Suburban and Urban areas with little variation between outputs


I am using the UWG to morph a local weather file to test results for four study areas ranging in suburban to urban traits - in the same city as the base file (Tampere, Finland).
I am having difficulty understanding why all four results vary so little from each other (.1 - .2 degrees), yet all are warmer by around 2 degrees than the base file - even the suburban cases.

  • I am using the legacy version, however, I have tested with the new version with similar results.
  • I have the same results when using a different base weather file (Miami) with the same inputs for the 4 study areas.

Please advise, and thank you for your time.