Quantification of carbon dioxide, methane, nitrous oxide and chloroform emissions over Ireland from atmospheric observations at Mace Head

摘要: Flux estimates of CO 2 , CH 4 N O and CHCl 3 over Ireland are inferred from continuous atmospheric records these species. We use radon-222 ( 222 Rn) as a reference compound to estimate unknown sources other The correlation between each species Rn is calculated for suite diurnal events that have been selected in the Mace Head record period 1995–1997 represent air masses exposed Ireland. established data selection criteria based on 212 Pb concentrations. estimated flux densities 12×10 kg km −2 yr −1, 680 kg O km −1 20 kg respectively. also 250×10 kg C km during wintertime, 760×10 summer night-time. Our compare well with CORINAIR90 CORNAIR94 inventories emission we close inventory value by CORINAIR90, but twice CORINAIR94 EDGAR 2.0. This discrepancy may caused revised 1996 IPCC guidelines national greenhouse gas 1994, which include new methodology emissions agriculture. carried out first estimation fluxes times larger than measured station peatlands. consistent interpretation same Ryall (personal communication, 2000), who obtained, using Lagrangian transport model, 24±7 kg . night-time wintertime those one biogeochemical model heterotrophic respiration. DOI: 10.1034/j.1600-0889.2002.00228.x