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ECN publication
Title:
Indirect N2O emission due to atmospheric N deposition for the Netherlands
 
Author(s):
Bleeker, A.; Denier van der Gon, H.
 
Published by: Publication date:
ECN Biomass, Coal and Environmental Research 1-10-2005
 
ECN report number: Document type:
ECN-RX--05-161 Other
 
Number of pages: Full text:
12 Download PDF  

Abstract:
Nitrous oxide (N2O) is a potent greenhouse gas produced insoils and aquatic systems. The UNFCCC requires participants to report ?indirect? N2O emissions, following from agricultural N losses to ground- and surface water and N deposition on (other) ecosystems due to agricultural sources. Indirect N2O emission due to atmospheric N deposition is presently not reported by the Netherlands. In this paper, we quantify the consequences of various tiers to estimate indirect N2O due to deposition for a country with a high agricultural N use and discuss the reliability and potential errors in the IPCC methodology. A literature review suggests that the current IPCC default emission factor for indirect N2O from N deposition is underestimated by a factor not, vert, similar2. Moreover, considering anthropogenic N emissions from agriculture only and not from e.g., traffic and industry, results in further underestimation of indirect N2O emissions. We calculated indirect N2O emissions due to Dutch anthropogenic N emissions to air by using official Dutch N emission data as input in an atmospheric transport and deposition model in combination with land use databases. Next, land use-specific emission factors were used to estimate the indirect N2O emission. This revealed that (1) for some countries, like the Netherlands, most agricultural N emitted will be deposited on agricultural soils, not on natural ecosystems and, (2) indirect N2O emissions are at least not, vert, similar20% higher because more specific emission factors can be applied that are higher than the IPCC default. The results suggest that indirect N2O emission due to deposition is underestimated in current N2O budgets.


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