 |
| Titel |
Investigation of greenhouse gas emissions from a landfill site and agriculture in the UK by deployment of an in-situ FTIR |
| VerfasserIn |
Hannah Sonderfeld, Neil Humpage, Antoine Jeanjean, Roland Leigh, Grant Allen, Hartmut Boesch |
| Konferenz |
EGU General Assembly 2016
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250129447
|
| Publikation (Nr.) |
 EGU/EGU2016-9563.pdf |
|
|
|
|
|
| Zusammenfassung |
| The main greenhouse gases (GHG) emitted by human activities in the UK are carbon dioxide
(CO2), methane (CH4) and nitrous oxide (N2O). Understanding and quantifying their
emissions is essential to monitor and guide emission reduction measures. The GAUGE
(Greenhouse gAs Uk and Global Emissions) project funded by NERC aims to improve the
knowledge of the UK GHG budget by an extensive measurement program. In this
presentation, we focus on two important sources of these GHG: Waste and agricultural
sector.
We are presenting data from the deployment of an in-situ FTIR (Ecotech) for continuous and
simultaneous sampling of CO2, CH4, N2O and CO with a high time resolution in the order of
minutes. During a two week field campaign at a landfill site near Ipswich in August 2014,
measurements were taken within a radius of 320 m of the uncovered and active area of the
landfill, which was still filled with new incoming waste. The data are analysed in detail for
emission ratios of CH4 to CO2. Thereby a consistent ratio in favour of CO2 is found for
these emissions. We have applied a computation fluid dynamics (CFD) model,
constrained with local wind measurements and a detailed topographic map of the
landfill site, to the in-situ concentration data to calculate emission fluxes of the active
site.
Since October 2014 the FTIR has been sampling from a church tower in Glatton as part of a
near surface sampling network in East Anglia focusing on regional GHG emissions from
agriculture. The site is mainly influenced by south westerly winds. A clear diurnal cycle is
observed in summer for CO2, CH4 and N2O, which is less pronounced in the winter
months. A simulation of the methane and nitrous oxide concentrations through
application of the NAME model to the EDGAR and NAEI emission inventories
illustrates some shortcomings in the available emission inventories for the probed
region. |
|
|
|
|
|
|