Estimation of spatial apportionment of greenhouse gas emissions for the UK using boundary layer measurements and inverse modelling technique

Polson, D.; Fowler, D.; Nemitz, E. ORCID: https://orcid.org/0000-0002-1765-6298; Skiba, U. ORCID: https://orcid.org/0000-0001-8659-6092; McDonald, A.; Famulari, D.; Di Marco, C.; Simmons, I.; Weston, K.; Purvis, R.; Coe, H.; Manning, A.J.; Webster, H.; Harrison, M.; O'Sullivan, D.; Reeves, C.; Oram, D.. 2011 Estimation of spatial apportionment of greenhouse gas emissions for the UK using boundary layer measurements and inverse modelling technique. Atmospheric Environment, 45. 1042-1049. https://doi.org/10.1016/j.atmosenv.2010.10.011

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Abstract/Summary

A technique is described to independently validate the national emission inventories produced using the methodology of the Intergovernmental Panel on Climate Change (IPCC). A boundary layer budget approach is applied to the United Kingdom and an inverse modelling technique is used to derive total and spatial apportionment of emissions for CO, CO2, CH4, N2O, HFC-134a, HCFC-141b, HCFC-142b and HCFC-22. During the summer of 2005 and September 2006 an aircraft circumnavigating the UK was used to collect data upwind and downwind of the UK coast. The concentration measurements were inverted to produce mapped emissions of the UK. The modelled overall CO flux (2900 ± 107 kt yr−1) and spatial apportionment throughout the UK are remarkably consistent with the official UK NAEI (National Atmospheric Emission Inventory) inventory. The CO2 total emissions (620 ± 105 Mt yr−1) and spatial apportionment are also close to the NAEI. However for N2O and CH4, the estimated annual fluxes, 500 ± 370 kt yr−1 and 3500 (range 0 – 8000 kt yr−1) respectively, are larger than the NAEI albeit with significant uncertainty. Emissions of four halocarbon compounds were also calculated with total emissions of 3.1 ± 0.4 kt yr−1 for HFC-134a, 0.9 ± 0.6 kt yr−1 for HCFC-141b, 0.56 ± 0.2 kt yr−1 for HCFC-142b and 3.8 ± 1.0 kt yr−1 for HCFC-22 consistent with other published data.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.atmosenv.2010.10.011
Programmes:	CEH Topics & Objectives 2009 - 2012 > Biogeochemistry > BGC Topic 1 - Monitoring and Interpretation of Biogeochemical and Climate Changes > BGC - 1.1 - Monitor concentrations, fluxes, physico-chemical forms of current and emerging pollutants ...
UKCEH and CEH Sections/Science Areas:	Billett (to November 2013)
ISSN:	1352-2310
Additional Keywords:	emissions inventory, inverse modelling, boundary layer budget
NORA Subject Terms:	Atmospheric Sciences
Date made live:	10 Feb 2011 16:03 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/12750

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