| Variable | Unit | Description |
| Objects | - | Single object IDs to visualize the model domain: 1: Building, 2: Terrain, 4: Containes Source, 11 -15: Vegetation with increasing LAD. These definitions are also stored in the default LEONARDO Special Layer Definition File |
| Flow u | m/s | Wind speed. Vector component along the West-East axis (+: East, -: West) |
| Flow v | m/s | Wind speed. Vector component along the North-South axis (+: South, -: North) |
| Flow w | m/s | Wind speed. Vector component along the vertical axis (+: up, -: down) |
| Wind Speed | m/s | Wind speed. Vector sum over all 3 axis |
| Wind Speed Change | % | Wind speed change in percent referring to the undisturbed inflow profile at the same height level. |
| Wind Direction | deg | Wind direction of horizontal component in geographic reference (0: N..90:E..180:S etc) |
| Pressure Perturbation | Pa | Dynamic pressure as a result of the wind field calculation. Pressure values will add up over time, use spatial difference values only if required |
| Potential Air Temperature | °C | Potential air temperature at reference (and model default) pressure. For the 3D model, it can be treated like the absolute air temperature |
| Air Temperature Delta | K | Difference between the local air temperature and the reference air temperature at inflow at the same height level |
| Air Temperature Change | K/h | Changes of air temperature compared to the last _AT_ output file |
| Specific Humidity | g/kg | Specific air humidity |
| Relative Humidity | % | Relative air humidity (Caution: Depends both on Specific air humidity and air temperature) |
| TKE | m²/m³ | Local Turbulent Kinetic Energy |
| Dissipation | m³/m³ | Local dissipation rate of Turbulent Kinetic Energy |
| Mean Radiant Temperature | °C | The composed radiative fluxes and air temperature for a standing person |
| Vertical Exchange Coefficient Impulse | m²/s | Calculated vertical exchange coefficient for impulse |
| Horizontal Exchange Coefficient Impulse | m²/s | Calculated horizontal exchange coefficient for impulse (At the moment for microscale assumed to be equal to the vertical exchange coefficient) |
| Direct Shortwave Radiation | W/m² | Available direct solar radiation referring to a reference surface perpendicular to the incoming sun rays (maximum value before applying Lamberts' law) |
| Diffuse Shortwave Radiation | W/m² | Available diffuse solar radiation referring to a horizontal reference surface |
| Reflected Shortwave Radiation | W/m² | Availablereflected solar radiation from the environment referring to a horizontal reference surface |
| Air Temperature Change through LW Cooling | K/h | Effect of longwave radiation divergence on air temperature per time |