Attributes related to aerosol clouds that are shared among all aerosol clouds. These are not defined for each instance of AerosolCloud separately to keep the class lean. The frequency of occurrence is not defined here because AerosolClouds (if considered in the exposure model) are directly linked to the respiratory cycle defined in AirTransmissionModel.

Describes exponential decay of pathogen load within an aerosol cloud; Unit: seconds

Describes initial spatial extent of aerosol clouds. The aerosol clouds have all the same initial circular extent (in the two-dimensional model). In 3D, we actually imagine them as spheres. Unit: meter

Describes the amount of pathogen in an aerosol cloud immediately after exhalation. Indirectly describes the infectious pedestrian's infectiousness; is to be reduced if aerosol emission is mitigated, e.g. by masks. Unit: particles / exhalation

Describes constant dispersion (over time), i.e. the spatial spread over time due to local air movement. This increases the radius of aerosol clouds equally in all directions (three-dimensional). Unit: meter / second

Describes dispersion depending on agents, i.e. the spatial spread of aerosol clouds caused by moving agents (which results temporally in local air movement). Each agent that passes a cloud with speed > 0 m / s contributes to the dispersion of the cloud: deltaRadius = pedestrianSpeed * pedestrianDispersionWeight This increases the radius of aerosol clouds equally in all directions (three-dimensional). Unit: 1

Describes how much pathogen carried by aerosols is absorbed per inhalation; is to be reduced if aerosol inhalation is mitigated, e.g. by masks. Unit: 1 / inhalation (can also be interpreted as m^3 / inhalation)