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SF6 and PFC are being used as state-of-the-art tracers in tracer-technology programmes aimed at efficient oil recovery in the North Sea. This study aimed at specifying sources of leakage and quantifying emission levels of such gases and at evaluating their effect on global warming. To satisfy these goals, quantification of SF6 and PFC combustion by-products under different realistic flame/temperature conditions (turbine, refinery, power plant, households and car engine) has been performed. The PFC compounds studied were PMCP (CF3C5F9), PMCH (CF3C6F11) and 1, 2-PDMCH ((CF3)2C6F10). Three-dimensional transport atmospheric modelling has been carried out using UAM-AERO for four different tracers' emissions scenarios (Base scenario, one including maximum emissions of tracers and two scenarios including overestimated emissions during loading processes and distribution over the land of Norway). The results showed a significant increase in the background concentrations of SF6 and PFC in the last two mentioned scenarios up to 6 km height approximately. These concentration profiles have been used as input to radiative models. In addition to SF6 spectral data obtained from HITRAN2K complemented with new band measurements, newly obtained data with quantitative spectral analysis for the specific PFC have been used in the line-by-line (GENLN2) and broadband models. [ABSTRACT FROM AUTHOR]