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This database includes annual, quarterly and monthly information on carbon dioxide (CO2) emissions related to commercial passenger, freight, and general aviation flights, on both a territory and a residence basis, for 186 countries. These CO2 emissions are estimated by the OECD, based on a consistent methodology across countries. The main source used for the estimation of these CO2 emissions is a database compiled by the International Civil Aviation Organisation (ICAO) with all commercial passenger and freight flights around the world.

Monthly aircraft movements (civil itinerant, civil local, military itinerant, military local) for airports with NAV CANADA towers.

Monthly aircraft movements (civil itinerant, civil local, military itinerant, military local) for airports with NAV CANADA flight service stations.

Monthly aircraft movements (itinerant and local) by rank, number, peak hour and peak day, for airports with NAV CANADA flight service stations. Aircraft movements, by class of operation and peak hour and peak day of movements, airports with NAV CANADA flight service stations, monthly

Monthly aircraft movements (itinerant and local) by rank, number, peak hour and peak day, for airports with NAV CANADA towers.   Aircraft movements, by class of operation and peak hour and peak day of movements, for airports with NAV CANADA towers, monthly

This table shows the awareness of air quality advisories and their influence on the behaviours and activities of Canadian households. The unit of measure is percent. The table is biennial; however the content is not collected every cycle of the Households and the Environment Survey.

Monthly itinerant movements (domestic, transborder and international) by type of operation (level I-III and foreign air carriers, level IV-VI, other commercial, private, government civil and government military), for airports with NAV CANADA flight service stations. Domestic and international itinerant movements, by type of operation, airports with NAV CANADA flight service stations, monthly

Monthly itinerant movements (domestic, transborder and international) by type of operation (level I-III and foreign air carriers, level IV-VI, other commercial, private, government civil and government military) for airports with NAV CANADA towers.   Domestic and international Itinerant movements, by type of operation, airports with NAV CANADA towers, monthly

Monthly itinerant movements by aircraft weight group, broken down by maximum take-off weight categories ranging from under 2,000 kgs to over 136,000 kgs, for airports with NAV CANADA flight service stations.   Itinerant movements, by aircraft maximum take-off weight, airports with NAV CANADA flight service stations, monthly

Monthly itinerant movements by instrument flight rules (I.F.R.), % of IFR flights, visual flight rules (V.F.R.), % of VFR flights, and runway 88 movements, for airports with NAV CANADA towers.   Itinerant Movements by Instrument Flight Rules, visual flight rules and runway 88, airports with NAV CANADA towers, monthly

Monthly itinerant movements by instrument flight rules (I.F.R.), % of IFR flights, visual flight rules (V.F.R.), % of VFR flights, and runway 88 movements, for airports with NAV CANADA flight service stations.   Itinerant movements, by instrument flight rules, visual flight rules and runway 88, airports with NAV CANADA flight service stations, monthly

Monthly itinerant movements by type of operation (level I-III and foreign air carriers, level IV-VI, other commercial, private, government civil and government military), for airports with NAV CANADA towers.

Monthly itinerant movements by type of operation (level I-III and foreign air carriers, level IV-VI, other commercial, private, government civil and government military) for airports with NAV CANADA flight service stations.

Monthly itinerant movements by type of power plant (jet, turbo-propellers, piston, helicopters and gliders), for airports with NAV CANADA towers.

Monthly itinerant movements by type of power plant (jet, turbo-propellers, piston, helicopters and gliders), for airports with NAV CANADA flight service stations.   Itinerant movements, by type of power plant, airports with NAV CANADA flight service stations, monthly

Monthly itinerant movements by aircraft weight group, broken down by maximum take-off weight categories ranging from under 2,000 kgs to over 136,000 kgs, for airports with NAV CANADA towers. Itinerant movements, by aircraft maximum take-off weight, for airports with NAV CANADA towers, monthly

Monthly operating and financial statistics (number of thousands of: passengers, passenger-kilometres, available seat-kilometres, load factor, hours flown, turbo fuel consumed in litres, and total operating revenues) for major Canadian airlines.

Passenger (enplanement) and cargo data is extracted from the Air Carrier Activity Information System (ACAIS), a database that contains revenue passenger boarding and all-cargo data. The database supports the FAA's Airport Improvement Program (AIP) apportionment formula calculations. More about the collection and use of passenger and all-cargo data » Passenger boarding and all-cargo data is collected for a full calendar year and determines AIP entitlements for the next full fiscal year (i.e., calendar year 2018 data determines Fiscal Year 2020 entitlement funds).

The indicator shows the population-weighted concentration of PM10 and PM2.5 to which the urban population is potentially exposed. Fine and coarse particulates (PM10) are those whose diameter is less than 10 micrometres, whilst fine particulates (PM2.5) are those whose diameters are less than 2.5 micrometers. Particulates can be carried deep into the lungs where they can cause inflammation and a worsening of the condition of people with heart and lung diseases. The smaller the particles the deeper they travel into the lungs, with more potential for harm. According to the recommendations of the World Health Organisation (WHO) the annual mean concentration is the best indicator for PM-related health effects. In 1996, the Environment Council adopted Framework Directive 96/62/EC on ambient air quality assessment and management. The first Daughter Directive (1999/30/EC) relating to limit values for PM10 and other pollutants in ambient air fixed an annual limit value of 40 micrograms of PM10 per cubic meter (40 µg/m3). Note that the WHO guideline value is 20 µg/m3 (annual mean). More recently, the Directive 2008/50/EC set a framework to define and establish objectives for ambient air quality and to harmonise methods and criteria among the Member States. This does have limits for PM2.5. The limit value that was due to be met on 1 January 2015 is 25 µg/m3, which falls to 20 µg/m3 by 2020. Note that the WHO guideline value is 10 µg/m3 (annual mean). The directive 2008/50/EC also places a requirement on Member States to assess and reduce population exposure to concentrations of PM2.5 by 2020. The magnitude of the required reduction depends on national average concentrations between 2009 and 2011. Where concentrations for those years were greater than 22 µg/m3, all appropriate measures should be used to reduce below 18 µg/m3 by 2020.