Indicator database

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    Nitrogen oxides emissions

    Nitric oxide (NO) and nitrogen dioxide (NO2) are together referred to as nitrogen oxides (NOX). Combustion of fossil fuels is by far the dominant source of NOX emissions. The emissions are not dependent solely on the amount of nitrogen in the fuel but also on the air - fuel mix ratio. High temperatures and oxidation-rich conditions generally favour NOX formation in combustion.NOX contributes to acid deposition and eutrophication which in turn can lead to potential changes occurring in soil and water quality.

    Consumption of ozone-depleting substances

    The consumption of ozone-depleting substances is the sum of the consumption of the ozone-depleting potential- weighted metric tons of all ozone-depleting substances controlled under the Montreal Protocol on Substances that Deplete the Ozone Layer. (Definition UN statistical handbook)

    Water productivity

    The indicator measures how much economic output is produced per cubic meter of fresh water abstracted. It indicates the productivity of water use.

    Average carbon dioxide emissions per km from new passenger cars

    This indicator is defined as the average emissions of carbon dioxide per kilometre by new passenger cars registered in a given year.