<p>Located in the North East of France, the Observatoire Pérenne de l'Environnement (OPE) station was built during the Integrated Carbon Observation System (ICOS) Demonstration Experiment to monitor the atmospheric concentration of greenhouse gases. Its continental rural background setting allows to fill the gaps between oceanic or mountain background stations and urban stations within the ICOS network. Continuous measurements of several greenhouse gases using high precision spectrometers started in 2011 on a tall tower with three sampling inlets at 10 m, 50 m and 120 m above the ground. The measurements quality are regularly assessed using several complementary approaches based on reference high pressure cylinders, traveling instruments audit and sets of travelling cylinders (so-called cucumber intercomparison). Thanks to the quality assurance strategy recommended by ICOS, the measurements precision are within the WMO compatibility goals for carbon dioxide (CO<sub>2</sub>), methane (CH<sub>4</sub>) and carbon monoxide (CO). The mixing ratios time series from 2011 to end of 2018 allow analyses of trends and diurnal and seasonal cycles. The CO<sub>2</sub> and CH<sub>4</sub> annual growth rates are respectively 2.4 ppm/year and 8.8 ppb/year for the 120 m above ground measurements over the investigated period. No significant trend has however been recorded for the CO mixing ratios. The afternoon mean residuals of these three compounds are significantly stronger during the cold period when inter-species correlations are high, compared to the warm period. The residuals variabilities show a close link with the air masses back-trajectories.</p>