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Hello, I am playing with EMS and I am trying to override variables for specific surfaces. For what I understand, the only actuators for surface-specific weather variables are:

• Outdoor Air Drybulb Temperature
• Outdoor Air Wetbulb Temperature
• Outdoor Air Wind Speed
• Convective heat transfer coefficient

Now, the questions I have are:

1) What is exactly the "Outdoor Air Drybulb Temperature"? Is it the ambient air temperature or the external wall temperature?

2) Is there a way to override surface-specific variables such as:

• External wall temperature
• Relative Humidity
• Wind direction
• Direct and diffuse radiation

Thanks

Hello, I am playing with EMS and I am trying to override variables for specific surfaces. For what I understand, the only actuators for surface-specific weather variables are:

• Outdoor Air Drybulb Temperature
• Outdoor Air Wetbulb Temperature
• Outdoor Air Wind Speed
• Convective heat transfer coefficient

Now, the questions I have are:

1) What is exactly the "Outdoor Air Drybulb Temperature"? Is it the ambient air temperature or the external wall temperature?

2) Is there a way to override surface-specific variables such as:

• External wall temperature
• Relative Humidity
• Wind direction
• Direct and diffuse radiation

Thanks