Observation-based estimates of fossil fuel-derived CO 2 emissions in the Netherlands using Δ14C, CO and 222Radon

van der Laan, S.; Karstens, U.; Neubert, R.E.M; van der Laan-Luijkx, I.T.; Meijer, H.A.J. (2010). Observation-based estimates of fossil fuel-derived CO 2 emissions in the Netherlands using Δ14C, CO and 222Radon. Tellus B: Chemical and Physical Meteorology, 62(5), pp. 389-402. Taylor & Francis 10.1111/j.1600-0889.2010.00493.x

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Surface emissions of CO2 from fossil fuel combustion (FFCO2) are estimated for the Netherlands for the period of May 2006–June 2009 using ambient atmospheric observations taken at station Lutjewad in the Netherlands (6◦21E, 53◦24N, 1 m. a.s.l.). Measurements of 14C on 2-weekly integrations of CO2 and CO mixing ratios are combined to construct a quasi-continuous proxy record (ΦFFCO2 ∗ ) from which surface fluxes (ΦFFCO2 ∗ ) are determined using the 222Rn flux method. The trajectories of the air masses are analysed to determine emissions, which are representative for the Netherlands. We compared our observationally based estimates to the national inventories and we evaluated our methodology using the regional atmospheric transport model REMO. Based on 3 yr of observations we find annual mean ΦFFCO2∗ emissions of (4.7 ± 1.6) kt km−2 a−1 which is in very good agreement with the Dutch inventories of (4.5 ± 0.2) kt km−2 a−1 (average of 2006–2008).

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