elemental
type: Concept

mass concentration
type: Concept

aerosol variables
type: Concept
narrower: aerosol particle elemental carbon mass concentration

Observed Property

Observation Matrix

aerosol particle elemental carbon mass concentration
type: Concept
Observed Property: mass concentration
creator: https://orcid.org/0000-0002-3380-3470
Object Of Interest: carbon
Constraint: elemental
in scheme: ACTRIS Vocabulary
broader: variable
broader: aerosol variables
definition: Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. Chemically, "elemental carbon" is the carbonaceous fraction of particulate matter that is thermally stable in an inert atmosphere to high temperatures near 4000K and can only be gasified by oxidation starting at temperatures above 340 C. It is assumed to be inert and non-volatile under atmospheric conditions and insoluble in any solvent (Ogren and Charlson, 1983). Elemental carbon may include inorganic carbon, which is operationally distributed between elemental and organic carbon.
Observation Matrix: aerosol particle phase

carbon
type: Concept

ACTRIS Vocabulary
type: ConceptScheme

variable
type: Concept
narrower: aerosol particle elemental carbon mass concentration

aerosol particle phase
type: Concept

Object Of Interest

Constraint