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Title:
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Top-down estimates of European CH4 and N2O emissions based on 5 different inverse models
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Author(s):
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Bergamaschi, P.; Corazza, M.; Segers, A.; Vermeulen, A.T.; Manning, A.; Athanassiadou, M.; Thompson, R.; Pison, I.; Bousquet, P.; Karstens, U.; Schmidt, M.; Ramonet, M.; Meinhardt, F.; Alto, T.; Haszpra, L.; Moncrieff, J.; Popa, M.E.; Nisbet, E.G.; Fisher, R.E.; Steinbacher, M.; Jordan, A.; O'Doherty, S.; Piacentino, S.; Dlugokencky, E.
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Published by:
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Publication date:
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ECN
Biomass, Coal and Environmental Research
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4-4-2011
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ECN report number:
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Document type:
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ECN-M--11-044
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Conference Paper
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Number of pages:
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Full text:
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2
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Download PDF
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Abstract:
Atmospheric measurements combined with inverse atmospheric models can provide independent top-down estimates of greenhouse gas (GHG) emissions. This is important in particular for N2O and CH4, for which considerable uncertainties of the bottom-up inventories exist (uncertainty estimates of bottom-up emissions reported to UNFCCC: CH4: ~30%; N2O >100% for annual country totals). According to UNFCCC inventories, CH4 and N2O contributed 'only' ~8% and ~7%, respectively, of total GHG emissions of EU-15 countries (2007). However, the reported reductions of total GHG emissions (1990-2007: -199 Tg CO2 eq) are mainly attributed to CH4 (-133 Tg CO2 eq) and N2O (-105 Tg CO2 eq).
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