• Data reference period
• Geographic localization (Portugal)
• Economic sector (CAE Rev. 3)
• Strategy to reduce GHC emissions

• REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).
• -:  Gases concentrados na atmosfera que absorvem e emitem radiação infravermelha, a partir dos raios solares que são refletidos para o espaço ou absorvidos e transformados em calor.
• ECONOMIC ACTIVITY:  Combination of resources such as labour, raw materials, equipment, etc., are joined, leading to the creation of specific goods or services. Regardless of the factors of production integrating the good or service produced, all activities generically imply an input of products (goods or services), a production process and an output of products (goods or services).
• ENTERPRISE:  Legal entity (natural or legal person) that is an organisational unit producing goods or services, which benefits from a certain degree of autonomy in decision-making, especially for the allocation of its current resources. An enterprise carries out one or more activities at one or more locations.

[Enterprises carrying activities on pollution abatement and control and reduction of GHC emissions (economic activity)/ Enterprises carrying activities on pollution abatement and control (economic activity)]*100