PALM Settings - [source code]

Steer the PALM-4U run: duration, wind, temperature and outputs. Forcing is idealized (constant wind, cyclic boundaries). Comfort switches on radiation and the biometeorology module, whose PET/UTCI/MRT maps are PALM-4U's point.

Input

Name	Nickname	Description	Type
Duration	T	Simulated hours after spin-up. Two hours settles a street-resolving flow field; a diurnal comfort study wants 24.	Number
Spinup	Sp	Wall and soil spin-up in hours before the atmosphere starts. 0.5 is a floor for surface temperatures worth reading.	Number
Output Interval	Oi	Minutes between outputs; also the averaging window for the _av fields.	Number
Wind Speed	U	Driving wind speed (m/s), applied as a constant geostrophic wind.	Number
Wind Direction	Dir	Meteorological wind direction in degrees (wind FROM; 270 = westerly).	Number
Air Temperature	Ta	Near-surface air temperature (°C).	Number
Humidity	q	Near-surface specific humidity (kg water per kg air). 0.008 is a mild mid-latitude day.	Number
Date Time	Dt	Simulation start, 'YYYY-MM-DD hhss +zz'. Drives the sun.	Text
Slice Height	H	Height above ground of the horizontal result slices (m). 2 m is pedestrian level.	Number
Output Variables	Out	PALM data_output names, one per item — pick from the catalog or type any name PALM knows. Empty uses the default set: pedestrian-level u/v/w/theta, surface temperature, and PET/UTCI/MRT when Comfort is on.	Text
Comfort	C	Run radiation and biometeorology (PET, UTCI, MRT maps). Off makes a plain LES — faster, wind only.	Boolean
Cores	N	MPI ranks for the run. Empty picks them automatically at launch: the container daemon's CPU count (on macOS and Docker Desktop the VM's allotment is the real ceiling), capped so every rank owns a worthwhile patch of the grid.	Integer

Output