I’m looking for help explaining why the results of the Solar-Adjusted MRT components are so different. In the image attached, a simple urban canyon model was used to evaluate the average solar-adjusted MRT on a typical summer day using both LBT methods available for outdoor calculations. The inputs to longwave_mrt and surface_temp have been set to the outdoor dry-bulb temperature in the absence of simulated surface temperatures. The Component Solar MRT method yields results that are on average 4C higher than the Outdoor Solar MRT method. What are the key calculation differences in how each component accounts for short and longwave radiation? Is one calculation method more “correct” or appropriate to use than the other?
Continuing the discussion from LBT - OutdoorSolarMRT & UTCI: