difference Site Outdoor Air Drybulb Temperature and Zone Outdoor Air Drybulb Temperature

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@saeranv thanks for the reply ... Q1so if my weather data is .epw KOR_SO_Seoul.WS.471080 at Altitude = 87.1 this is where my Site Outdoor Air Drybulb and Zone Outdoor Air Drybulb is recalculated for the height of my walls/building, is 4m so at 2m?

Q2:so in https://bigladdersoftware.com/epx/doc... DOE-2 Model it uses Zone Outdoor Air Drybulb or Site Outdoor Air Drybulb? , Q3 same here? https://bigladdersoftware.com/epx/doc...

I can only say that, based on my interpretation of the EP reference, the answer is yes for all three, but caveat: I haven't looked at the code, so I'm going purely off the written documentation. For Q1: the EP ref specifically says "The zone centroid or surface centroid are used to determine the height above ground."

For Q2 and Q3 they explicitly mention "Only local outdoor air temperature and wind speed are currently calculated because they are important factors for the exterior convection calculation for surfaces (see Exterior Convection below) and can also be factors in the zone infiltration and ventilation calculations."

If there's no explicit exceptions mentioned in the documentation of specific algorithms, I see no reason to assume they would use the site outdoor drybulb rather then use the recalculated drybulb with respect to height.