Ambients

Ambients are reusable SIM inputs for air, wind, and track condition assumptions. Simulations select an ambient with the vehicle and driver. FastSim also selects a circuit. OpenSim also selects a driver input.

Use ambients when you need to compare conditions such as air temperature, track temperature, wind, humidity, pressure, or global grip.

Before you start

Select the correct team.
Create, edit, duplicate, and delete actions depend on module permissions.
Decide how the team names weather, session, or track-condition baselines.

Create an ambient

Open Ambients from the sidebar.
Select New.
Enter Name.
Add Notes when the condition needs context.
Add Tags when the team filters ambients by event, session, or condition.
Save the ambient.

The ambient appears in the Ambients table and in simulation ambient selectors for the active team.

Edit ambient metadata

Open Ambients.
Select the row action for the ambient.
Choose Edit.
Update name, notes, or tags.
Save the changes.

Tune ambient conditions

Open Ambients.
Select the ambient row.
Review Environmental rows on the detail page.
Edit the condition values that should represent the session or baseline.
Save with Update Data when the action appears.

Ambient fields

Field	What it means	Notes
Name	Ambient condition name.	Required.
Notes	Team context for weather, session, source, or baseline.	Optional.
Tags	Labels used for filtering and organization.	Optional.

Environmental parameters

Parameter	Description	Units	Default	Validation / Range
Temperature	Ambient air temperature.	°C	20	-50 to 100
Pressure	Ambient air pressure.	Pa	1013	0 to 200000
Humidity	Ambient air relative humidity.	%	50	0 to 100
Wind Speed	Wind speed or strength.	m/s	5	0 to 50
Wind Direction	Wind direction. Zero degrees means headwind at the start of the lap. Angle increases clockwise when the track is viewed from above.	°	180	0 to 360
Track Temperature	Track surface temperature.	°C	22	-50 to 100
Track Global Grip	Global gain that scales grip around the track. It is multiplied by local grip levels and tire gains or scalings.	n/a	0.8	0.1 to 3

Use an ambient in simulations

FastSim requires Vehicle, Circuit, Ambient, and Driver.
OpenSim requires Vehicle, Ambient, Driver, and Driver Input.
Credit estimates need an ambient before calculation can run.
Use separate ambients when comparing condition changes against the same vehicle, driver, and circuit.

Troubleshooting

Problem	What to check
New is hidden	Confirm your role has module create permission.
Cannot save metadata	Check required name and any visible validation errors.
Cannot save condition changes	Fix validation errors in Environmental rows before selecting Update Data.
Ambient is missing from simulation setup	Confirm the correct team is active and the ambient exists in that team.
Credit estimate does not appear	Select the required simulation setup inputs, including ambient.